Ben 10 Wiki
Ben 10 Wiki
Ben 10: Ultimate Alien
Fame Where the Magic Happens Ben 10,000 Returns The Mother of All Vreedles
Duped Perplexahedron The Creature from Beyond The Widening Gyre
Hit 'Em Where They Live The Forge of Creation Basic Training A Knight to Remember
Video Games ...Nor Iron Bars a Cage It's Not Easy Being Gwen Solitary Alignment
Escape from Aggregor The Enemy of My Enemy Prisoner Number 775 Is Missing Inspector 13
Too Hot to Handle Absolute Power: Part 1 Moonstruck Enemy of My Frenemy
Andreas' Fault Absolute Power: Part 2 Simian Says Catch a Falling Star
Fused The Transmogrification of Eunice Greetings from Techadon The Eggman Cometh
Hero Time Eye of the Beholder The Purge Couples Retreat
Ultimate Aggregor The Big Story The Flame Keepers' Circle Night of the Living Nightmare
Map of Infinity Viktor: The Spoils Double or Nothing The Beginning of the End
Reflected Glory Girl Trouble The Perfect Girlfriend The Ultimate Enemy: Part 1
Deep Revenge of the Swarm The Ultimate Sacrifice The Ultimate Enemy: Part 2
Ben 10/Generator Rex: Heroes United



  • When Ben wakes up, Rozum has green eyes.
  • When Ben got out from the water his shoe is miscolored.
  • Towards the end of Ultimate Spidermonkey's transformation, if you look closely, the muscles on the right of his body are gone for a brief moment.
  • When Ben as Ultimate Spidermonkey wrapped up Bivalvan, his knee was sticking out, but when it showed him fully wrapped up, all of it was in the web.
  • After Ben reverted from Spidermonkey, Ben's eyes glow pink for a moment. According to Charlotte Fullerton, the glowing eyes were an animation error.[CF 1][CF 2]
    • However, at one point, Dwayne McDuffie claimed an episode explaining the glowing eyes was being written[DM 1] and that it had something to do with the Ultimatrix's evolutionary feature.[DM 2]
  • In one scene, when Ben was about to go to school, his backpack was brown. Then in the next scene, his bag turned to the same color as Julie's (light blue).


  • Rath somehow has Ben's phone.
  • There are multiple copies of Ben in the audience at Julie's tennis match.
  • When sensitive Ben opens his eyes, the white part is black.
  • When the normal Ben steps out of the bathroom, the black 10 emblem on his jacket is white and the 10 is black.
  • When Kevin absorbs metal, it was the same color as stone.

Hit 'Em Where They Live

Video Games

  • When Oliver is talking to Harangue after the video game scan, his voice is the same as the one he used when he was talking to Ben, but later in the series, it changes.
  • When Jetray sits on the top of the minivan after stopping it from falling over because of the Stalker, the black zigzags from the Ultimatrix to his shoulders are missing, then during the same battle while Jetray shot his lasers and they were reflected, the zig-zags are gone again during Jetray's close-up.
  • When Cannonbolt opens his mouth after getting trapped, it is blue instead of black.
  • Before Ben turns into Humungousaur, the Ultimatrix hologram was facing the wrong direction.
  • Gwen's driver's license has Gwen Tennyson written on it instead of Gwendolyn.

Escape from Aggregor

  • During the first few seconds of the fight with the Yeti, either the top or bottom straps on Four Arms disappear.
  • In the scene where the Yeti smashed Four Arms into the ground, the golden bands on his chest were black.
  • Ultimate Big Chill had red legs for a second.
  • When Aggregor lands on Aldabra, he has holes on his stomach.
  • When Galapagus is hit by Aggregor, his mouth is green.
  • In one scene, the gold stripe on Galapagus' head is green.
  • In one scene, Galapagus' body is miscolored.
  • When P'andor reaches to burn Bivalvan's arm, Andreas disappears.
  • When P'andor and Andreas are walking away to go take over the ship, Andreas' tail is missing.
  • After Galapagus sends a distress call and turns around to see Aggregor subduing Bivalvan and Ra'ad, there's an Ultimatrix symbol on Galapagus' chest.
  • When the aliens were looking at Aggregor as Prior Gilhil was murdered, Galapagus' eyes were all black. Also, he and P'andor seem to overlap each other.
  • When Aggregor attacks Andreas, Ra'ad, Bivalvan and P'andor and they jump in a hole, P'andor's feet are miscolored.
  • When Aggregor turns around, Ra'ad disappears.
  • When Galapagus attacks the Aggrebots, the cracks on his shell are transparent.
  • In Fame, Ben was not able to turn into any alien before the Ultimatrix had scanned Bivalvan, but in this episode he scanned Galapagus only at the end.
  • When all of the aliens' holograms are shown:

Too Hot to Handle

  • Even though there was a sound of the containment suit getting pierced, the suit was still intact until Kevin was tricked into actually opening it.
  • When Humungousaur went Ultimate, the flash was blue instead of green.
  • Kevin absorbs P'andor's green armor, but after the scene changes his body becomes silver.
  • When Water Hazard goes inside the nuclear reactor, he turns the Ultimatrix symbol until it's sideways. However, when he hits it to turn into Big Chill, the symbol is no longer sideways. Also, before he hits it, the symbol is no longer red (indicating radiation) even though P'andor was still there. It remains this way when Big Chill fights P'andor.

Andreas' Fault

  • After Argit gets thrown down the steps, one of his jacket stripes is missing.
  • The second boy who runs to see Ben is carrying a Humungousaur cup, but when Ben signs it, it has Goop's picture.
  • In multiple scenes, Jetray's stripes on his torso are missing.
  • When Andreas first appears, his arm is floating without connecting his body.
  • When Andreas hugs Kevin, his hand is yellow instead of grey.


  • When Ben jumps off his bed after being attacked by Ra'ad, his left foot only has four toes.
  • Just like in Escape from Aggregor, Ben was able to safely use the Ultimatrix to transform even though Ra'ad was present and it hadn't scanned him yet.
  • When Ben is selecting Ampfibian, he says "Amperi" three times, but the hologram only appears twice.
  • When Ben selects Brainstorm, the hologram is missing the neck brace.
  • When Kevin gets blasted out of the warehouse by Aggregor, he is later shown to be trapped under a fallen electric pole even though he was just thrown outside.
  • After Ra'ad saves Brainstorm from Aggregor, the electric device he used to get inside is missing from the wall.
  • Right before the warehouse explodes, Kevin's car is gone.

Hero Time

  • The crowd standing changed from a cluster line into a single file line. This occurred both at the booksigning and at the party.
  • When Ben becomes Spidermonkey, the fans are standing in front of the cordon, even though they were standing behind it before the fight.
  • Spidermonkey flies on top of the building across the street. However, this is actually the same spot where Captain Nemesis puts on his armor, but he is not seen.
  • Various other errors occur during the first fight:
    • Although both of Jennifer's bodyguards are shot and thrown backwards, they disappear throughout the fight and even when Jennifer kissed Ben.
    • The fans at the book signing appear and vanish throughout the fight.
    • Jennifer and the thug who keeps her at hostage constantly vanish and appear.
    • The guns vanish after the thugs were being disarmed and beaten.
    • The Darkfall poster on the door appears and vanishes throughout the fight.
  • Ben mentioned that he has a poster of Captain Nemesis on his wall, but all of the many episodes his room appeared in, there is no poster at all.
  • Kevin mutes the volume on the TV when he, Gwen, and Julie are watching the news about Bennifer. However, when Ben arrives and watches Harangue's news, the volume is automatically unmuted.
  • When Kevin says "I do." before Gwen hits him, his face and hand are merged.
  • When Jennifer was talking to Ben by the helicopter Ben's jacket stripes are on both sleeves.
  • When Jennifer says "Ready for the party?" to Ben, Gwen and Kevin vanish when the camera moves from Julie to Ben.
  • When Ben was at the party, his jacket stripes are on the wrong side.
  • It stops raining within a second when Simons speaks with Harangue.
  • When Jetray dives, his chest stripe is yellow.
  • Before Armodrillo changes back, he is standing behind Captain Nemesis, but when Ben appears, he is suddenly in front of Nemesis.
  • Ben says that he defeated ten of Computron's minions, but if counted, he only defeats five. In fact, there were only about five of them in that scene.
  • When Nocturne begins hosting for the friendly contest, her shorts are black.
  • Humungousaur's feet appeared before Ben transformed into him.
  • When Ben and Nemesis are having their race one of the placards the fans are holding reads "I <3 BEM".
  • When Captain Nemesis wins the race, the audience is reused three times.
  • The bridge vanishes when Captain Nemesis beats Rath in the race.
  • During the competition, in one scene, the N on Captain Nemesis' chest was miscolored.
  • After Captain Nemesis loses the competition, one of the audience members doesn't have a face.
  • When Ben enters the Nemesis Tower, his jacket stripes are on his left sleeve instead of his right sleeve.
  • When Captain Nemesis shot a rope at Ultimate Humungousaur's arm, the rope on his arm disappears for a split second and reappears in the next scene.
  • When Nemesis is flying towards Ultimate Humungousaur, his horn is green.
  • Right when Water Hazard takes his first swing at Overlord, the N on his chest is missing.

Ultimate Aggregor

  • When Ben uses Ultimate Big Chill to keep the fans away, the Smoothie he set down disappears
  • The emblem on Ben's jacket has its black and white colors interchanged, one of the most common errors of the series.
  • Kevin says his badge used to be his dad's. However, Kevin took the badge from Magister Labrid after the latter died.
  • After Lodestar revives himself, Ben tells Gwen "for what it's worth you were right about the trap thing" when Max is the one who said "it's a trap!"
  • Before Aggregor puts on his Mind Control Headband, his belt is the same color as his tunic.
  • When the mind-controlled aliens are confronting the team, Andreas' upper arms area is yellow instead of black.
  • When Gwen blasts Aggregor, the Entropy Pump is missing the energy inside it.
  • When Nanomech says the line "You can't beat us all." his mouth doesn't move.
  • Before Humungousaur runs towards Aggregor, the tubes containing the five captured aliens are gone.
  • When Humungousaur strikes Aggregor, his lips are brown.

Map of Infinity

  • When Humungousaur first charged Ultimate Aggregor, Aggregor was down in one shot and standing in the next.
  • In many scenes, Humungousaur didn't have black lips.
  • When Aggregor blasted Gwen, she didn't have a face.
  • When Ben, Gwen, and Kevin started walking after disembarking the Rust Bucket 3, there was a layering issue, and Gwen's hand passed over Ben's head as she walked in front of him.
  • The Necrofriggians suddenly appear on the bridge.
  • When Ben transformed into Big Chill, the Ultimatrix's colors were reversed.
  • When Big Chill was talking to Gwen, the sides of his Ultimatrix symbol are white.
  • When Big Chill was talking to one of the Necrofriggians, and when he tackles one of them later, his Ultimatrix was missing.
  • When Ben first turns into Ultimate Echo Echo, he grabs his shoulder disks. Yet, after he takes them off, the right shoulder disk is still there, then in the next scene, it's gone. His fingers also turn blue during this scene.
  • When Ultimate Echo Echo attacks the first Necrofriggian, he disappears for a split second.
  • When Ultimate Echo Echo attacks the second Necrofriggian his left eye misses its stripe.
  • In most of his scenes, Ultimate Echo Echo either has a blue bar or doesn't have the circle symbols on his back. The blue bar error would appear in other of his episodes as well.
  • When Ultimate Echo Echo is hovering above the acid, his fingers are blue.
  • When Four Arms backs away from the door when he releases it, he takes a small step, but in the next scene he is much further away from the door. He could not moved that fast when the door closed.
  • In one scene, Four Arms is missing a finger on each hand.
  • Ben's jacket stripes appear on the wrong side in one scene.
  • Ben was burnt on the right side of his face; yet, when he's lying on the ramp, his right side is facing the icy half of the planet.

Reflected Glory

  • J.T. and Cash know about the Plumbers even though they are a secret organization.
  • When Four Arms goes into the Forever Knights hideout, just as the smoke clears his bottom gold straps are gone.
  • In one scene, Four Arms' underwear is gold and only has three arms.
  • Kevin's metal form changes between two colors.
  • When Psyphon made the entrance through the roof, Ben was shown wafing off the dust. The next scene showed Ben as Four Arms, switching back to human form.
  • When Spidermonkey transformed to Ultimate Spidermonkey, he sounds completely different than he was supposed to.
  • Ultimate Spidermonkey's jaw is miscolored on many shots.
  • When Psyphon attacks Ultimate Spidermonkey, his energy beams disappear.
  • When Psyphon lifted Ultimate Spidermonkey, he was much smaller than he should have been.
  • Oliver claims that the webcast is live, but after Cash accidentally gets knocked out by the Forever Knight, he claims they can "save it in editing."


  • At the beginning of the episode when Magister Pyke is chasing Ultimate Aggregor, there's a lot of rocks shown floating around. But later in the episode, there aren't any rocks at all, excluding the core.
  • When Ben and Kevin leave the Rust Bucket 3, most of Ben's body merges with the water and the ship.
  • When Pyke attacks the fish, his whiskers have outlines.
  • When Ben transformed into Humungousaur, the palms of his hands swapped between the color of his stomach, and the color of his back and arms.
  • In one scene, Pyke’s briefs were white instead of black
  • When Ampfibian came out of the water, the highlights of the water were green.
  • When Pyke got his water helmet, Kevin was shifting between his normal form and his metal form.
  • When Pyke grabs Gwen, his angler is grey.
  • The Piscciss Volann guards had grey anglers.
  • When Big Chill is chasing Aggregor, two Piscciss Volanns start to chase him, for a moment it can be seen that the one on the right has Magister Pyke's design.
  • The whole time Goop was pulling the planet together, Pyke did not have his helmet on and yet showed no discomfort.
  • Kevin says "S'ok, I took pictures" and displays a cell phone but when he and Gwen rescued Ben, he did not take pictures.

Where the Magic Happens

  • At the start of the episode when Aggregor was being chased by Four Arms, Gwen and Kevin, Four Arms' lips were outlined in black.
  • When Charmcaster defeats Gwen, she says that Ledgerdomain was made of mana, though Charmcaster didn't know about mana until Gwen explained it to her later in the episode, but she understood what Gwen meant.
  • After Gwen asks Charmcaster to help them enter Ledgerdomain, Charmcaster turns around and her tiara is colored light purple instead of black.
  • Charmcaster's eyes change between light blue and purple throughout the episode.
  • When Chromastone says "Cool!", his body is somewhat thinner than usual, his head is longer, his neck is wider, his eye is bigger, and the crystal shards on his chest are a slightly different shape.
  • The ledge where Charmcaster hears Spellbinder's voice is shown as a well-like hole when Charmcaster almost steps off.
  • When Humungousaur hits the Pallorfang, its eyes disappear.
  • The surroundings of the Door to Anywhere changes at the end of the episode.


  • In one scene, Ultimate Aggregor's right hand was miscolored.
  • When Gwen was frozen, she had her mouth open but in the next scene, she had both her upper and lower teeth joint together and the front of her hair had drooped down.
  • Despite previously admitting to having a fear of spiders in Vengeance of Vilgax: Part 2, Gwen does not show any reaction towards the spider that crawls all over Ben.
  • When Cannonbolt becomes Ultimate Cannonbolt, the Ultimatrix doesn't gain the four spikes until after the transformation is finished.
  • The last piece of the Map of Infinity keeps vanishing and reappearing.

The Forge of Creation

  • For a split second, Terraspin is missing a hole on his body.
  • In the scene in the time barrier, Gwen says "This is weird; we shouldn't be able to breath out here." But she shouldn't be surprised by this as Paradox told the team that they wouldn't need air while in the barrier.
  • In one scene, Gwen's collar was red instead of white.
  • In many scenes, 10 year-old Ben's Omnitrix contains an error. The button used to activate the alien selection dial is on the wrong side of the Omnitrix, facing outwards. The button is supposed to face towards Ben for ease-of-access and has mistakenly been put on the outside.
  • When Kevin is introducing himself to young Ben, the part of the jacket between the two shoulder stripes of Ben's jacket is black instead of green.
  • When 16 year old Ben is first talking to young Ben his jacket is shown to have stripes on either side.
  • In the scene where young Ben is looking through the Ultimatrix, it is colored like the Omnitrix.
  • When both Bens used Four Arms, 16 year-old Four Arms' eyes were miscolored yellow.
  • When 16 year-old Four Arms is about to change 11 year-old Four Arms, his hourglass symbol is grey.
  • When Ultimate Aggregor throws young Four Arms into the air, before he hits 16 year-old Four Arms, his eyes are miscolored green.
  • When Ultimate Aggregor throws young Four Arms, his Omnitrix symbol is on the wrong shoulder.
  • Young Stinkfly had the ability to shoot lasers at Ultimate Aggregor instead of slime projectiles.
  • During the battle with Ultimate Aggregor, Kevin is shown running away. The next time he is shown, Kevin's knocked out despite not actually fighting Ultimate Aggregor.
  • When Ultimate Aggregor reaches for the baby, he uses his left hand. However, in the next scene, he is reaching with his right.
  • When Ultimate Kevin grabs Ultimate Aggregor's head, before absorbing his powers, his Rath claw is the same color as his left arm and hand, and also changes to Armodrillo's armor color when he shoots Jetray's neuroshock blasts right in his face before he absorbed his powers.
  • When Ultimate Kevin jumps to fly away from the Mother Celestialsapien, his legs are blue along with his pants.
  • When Gwen kisses young Ben, his Omnitrix looks different.

...Nor Iron Bars a Cage

The Enemy of My Enemy

  • When Ben is talking to Gwen in his car, he loses the stripes in his right sleeve.
  • When Ultimate Kevin talks to Argit, his eye misses its outline.
  • In the scene where Ben, Gwen and Argit are discussing where they're going to hide Argit, Gwen's collar was red instead of white.
  • The episode keeps switching between Argit's jacket having a line on either side and having one line on the left side.
  • Coronach's eyes differ between black and grey.
  • One of the Plumbers mouth disappears when he is done speaking.
  • As Humungousaur turned into Ultimate Humungousaur, the 4 spikes are not popping out of the right sides of his Ultimatrix symbol.
  • In some scenes, when Ultimate Humungousaur is fighting Ultimate Kevin, the Big Chill hood is not on his head.
  • In the scene where Ultimate Echo Echo was flying, one time he has light blue colored feet, like his shoulders, and another time he has blue feet like his regular skin.
  • One one scene, Coronach's sclerae were green.

Absolute Power: Part 1

  • While Ultimate Kevin absorbs Alan's powers, his Spidermonkey arm is brown.
  • After Ultimate Kevin absorbed Alan's abilities, Alan's Plumber Badge disappears.
  • When NRG grabs Kevin's arm, his Ultimatrix symbol is missing.
  • Before Ben transforms into Chromastone, the Ultimatrix dial was facing the wrong direction.
  • After Way Big chances back into Ben, the floor turns back into cement even though NRG melted it into lava, which can't of cooled down in that time.
  • When Gwen raises a mana shield to protect herself from Ultimate Kevin's mana attack, it cracks before the attack hits it.
  • Gwen couldn't have summoned Stone Creatures, as they only followed Charmcaster because she freed them.

Absolute Power: Part 2

  • At the beginning of the episode, during the recap, Ben says "Previously on Ben 10: Alien Force" instead of "Previously on Ben 10: Ultimate Alien." This has been corrected on the DVD release. It is incorrect on HBOMax.
  • When Spidermonkey apologizes to Max, his chest is the same color as his fur.
  • In one scene when Ultimate Kevin is fighting Echo Echo, his Lodestar shoulder is miscolored.
  • Ultimate Kevin's hood disappears from when he landed into the building to when he arises from the wreckage of the second building. He briefly gains it again in between some scenes only.
  • In one scene when Ultimate Kevin is fighting Ultimate Echo Echo, his pectorals turn red for a split second.
  • After Ultimate Echo Echo defeats Ultimate Kevin, the sonic disk on his right shoulder is missing. It reappears a few shots later, but lacks its blue circle.
  • When Ultimate Echo Echo says, "He was going to hurt you!", one of his Ultimatrix spikes is shorter than the others.
  • At the end of the episode, the height ratio of Kevin compared to Ben and Gwen was bigger than usual.

The Transmogrification of Eunice

  • When Gwen scans the escape pod, the sound effect of her magic is heard but her eyes don't glow pink.
  • After the escape pod that contained Eunice opened, some parts of the green smoke didn't move for a while.
  • During the campfire scene, Eunice's eyes are blue instead of green.
  • When Ben transformed into Spidermonkey, his torso was colored standard blue.
  • In one scene the outlines of Sunder's mouth had the same color as his teeth.
  • When Ultimate Cannonbolt is blasted through the air by Sunder, his body is shaped incorrectly.

Eye of the Beholder

  • When Ben transforms into Jetray and Brainstorm, he has the Omnitrix on his wrist, rather than the Ultimatrix.
  • During Jetray's transformation, the Omnitrix is green in one scene and black in the next.
  • On one scene, Ship has light green highlights.
  • During Baz-l's Heimlich maneuver, Julie's hand is green instead of black.
  • When Julie gives back its eye to the sentinel, Baz-l has green lines on the green parts of his body.
  • When Swampfire transforms back, Baz-l shortly had a green line instead of a black one. Also, Julie's armor face is green.

The Big Story

  • When Jimmy is being chased by Plant Humungousaur, his jacket kept switching from zipped to unzipped.
  • When the Plant Alien shoots the liquid that forms a sort of containment around Swampfire, it shoots a lot of the liquid (enough to almost drown Swampfire) but after it turns into the barrier there is only the part around Swampfire.
  • When the plant picked up Swampfire, the Ultimatrix symbol was missing but in the next scene it re-appeared.
  • When Ultimate Swampfire is telling the others to run away, his eyes were like Swampfire's.

Viktor: The Spoils

  • When Ultimate Echo Echo appears, his voice is lighter than normal.
  • One of the black stripes on Ultimate Echo Echo's head is blue when he releases his Sonic Disks.
  • In one scene, Big Chill's hands are colored blue instead of black.
  • When Big Chill unfolds, the Ultimatrix's colors are reversed.
  • When Ultimate Big Chill is defeated, a red stripe appears on his head.
  • When King Xarion was in the dungeon, he had shackles on his wrists and ankles. However; even though Gwen only breaks the shackles on his hands, he walks away without freeing himself from the shackles on his legs.
  • When Gwen breaks King Xarion's shackles, the whole bar shatters. However, in another scene, the bar is shown to be twisted.
  • When King Xarion experiments on an unconscious Ben, there is a grey bar in front of Ben's lower body, but for the rest of the next scene it's gone.
  • When King Xarion is about to transform Ben, the green parts around the Ultimatrix's dial are grey.
  • When Heatblast punched Viktor into a tank, the Ultimatrix symbol appears larger than normal.
  • There is no conceivable reason that the soldiers' equipment should break or shatter, just because Ben turned off the mind control function.
  • When the gang walks away during King Viktor's speech, you can hear him say more without moving his mouth.

Girl Trouble

  • Natalie mentions that Gwen used to like playing with Sunny when they were little, implying that Sunny was sent to earth when she was little. However, Verdona was unaware of the existence of her human grandchildren until What Are Little Girls Made Of?. Therefore there was no reason to send Sunny to earth before that.
  • Sunny's eyes vacillate between green and blue throughout the episode.
  • In the transformation of Four Arms, he has four fingers on each hand before the part where his five human fingers change into four.
  • On one scene, Four Arms' Ultimatrix's rim was black.
  • In one scene, the black ten emblem on Ben's jacket is white and the 10 is black.
  • Lodestar's voice was higher than usual and his eyes were bigger than usual.
  • When Gwen steps on the Dimension 12 robots, the highlight on one of them changes within seconds.
  • When Kevin is trying to stop the bomb from becoming more powerful, the on-off switch look alike, both set to the off position. As soon as the camera changes to a few frames before Kevin smashes the machine, one switch is set to on.
  • When Antonio throws Humungousaur, Humungousaur's toes are the same color as his scales.
  • When Ultimate Humungousaur fires his missiles at Antonio, the missiles don't explode.
  • After Antonio is defeated, Ultimate Humungousaur's neck was blue.

Revenge of the Swarm

  • The sign on the door of Victor Validus's lab incorrectly says "Valadis Laboratories".
  • In one scene, Terraspin's body is miscolored.
  • When Ben says "Incredible, simply incredible", the underneath of the Ultimatrix cannot be seen.
  • When Ben showed the Nanochip to Elena, it looked bigger than usual.
  • When Kevin and Gwen are talking in Burger Shack first, there was nothing on the table other than burger and the drink but in the next scene there is a cup there too.
  • The second time Water Hazard attacks the Victor Validus clone, his Ultimatrix symbol has no black color.
  • When Armodrillo breaks open the doors to release Julie, he disappears for a second. Also, the doors aren't attached to the walls before he does this.
  • When Julie is tied up in the closet, her hands are tied behind her back. But when Armodrillo rescues her, her hands are tied in front of her.
  • In the next scene after Armodrillo finds Julie in the closet, she is untied and ungagged, but it is impossible he had enough time to free her, moreover when he was fighting against the swarm.
  • When Armodrillo gets hit by Elena's blast of Nanochips, he is missing his tail.
  • When Elena and Julie are talking and Elena sacrifices herself, Gwen and Kevin cannot be seen fighting the Victor Validus clones behind them.

Ben 10,000 Returns

  • When Eon is hit by the time ray in the beginning, he doesn't have his cape. Also, the fire around him is gone.
  • At the beginning, when Ben 10,000 changes from Ultimate Ben to normal Ben, he still had the Ultimatrix symbol on him; but when Professor Paradox came in he didn't have it anymore.
  • In the museum, Kevin keeps shifting between human and metal form.
  • When Ben shakes hands with Ben 10,000, it is shown to be with the right hand. But when the scene changes, they are shaking with their left hands.
  • Even though Goop said that he wanted Rath, it can be seen that Goop's hologram was active on the Ultimatrix.
  • When Kevin absorbs a stone to fight Eon's Servants, the stone he absorbs is brown, but his armor is shown to be grey.
  • When Ultimate Swampfire grabbed Eon, his Ultimatrix was slightly shifted.
  • When Eon threw Ultimate Swampfire on the ground, the four spikes on the Ultimatrix are missing.
  • When Ben 10,000 takes Ben to run from Eon, his Ultimatrix symbol on his chest was gone.
  • Present Ben and Ben 10,000's heights change throughout the episode. He was shown to be only a head shorter and then later, his chest and up.
  • Ben, Gwen, and Kevin are noticeably shorter in this episode.

The Creature from Beyond

  • When Gwen connects to the Lucubra in the car, the seal is on the opposite side and side ways.
  • When Ben turns into Goop, he is missing his Anti-Gravity Projector, face, and Ultimatrix.
  • When Ben transforms into Armodrillo, his face was smaller than usual, his hands were bigger and his elbows didn't have the jackhammers in one shot.
  • When Armodrillo and Kevin break the wall to get the Lucubra, Armodrillo yelled "Kevlin!"
  • Before Gwen creates the seal over Lucubra, she is wearing a metal helmet, but afterwards, it disappears.
  • Instead of Sir Reginald, another knight who wasn't there during the seal break, becomes the Lucubra's victim.

Basic Training

  • When Ben says "Hello old friend" the circle on his right wrist is green but in the next scene it is grey again.
  • During target practice Ben is shooting at a picture of an alien, in the next slide it is a totally different alien picture.
  • When Ben says "But not as good as us" in combat practice, he was going to hit the Ultimatrix on his left hand, but there was an Ultimatrix on his right hand, too.
  • During combat practice, the Alpha Squad member who caught Kevin was the same person who caught Gwen.
  • In one scene, Gwen's hair turns black for a split second.
  • As Magister Hulka is saying "The exercise is over", part of Diamondhead's arm disappears for a second.
  • When Hulka throws Kolar into the Null Void, one of Kolar's hands is cut off in the middle.
  • When Hulka comes in when the team are lined up at the end, Ben is cross-eyed.

It's Not Easy Being Gwen

  • When Gwen put her headphones on the table and got out the spellbook, neither the headphones nor the MP3 player were there.
  • When Gwen went across the corridor, the students passing by her were a lot smaller.
  • When Emily is holding the bagel, some of her fingers are not shown, even in the next shot.
  • When the fog clears out after Ultimate Cannonbolt was getting whipped around by the mutant frog and laying down, the four spikes for the Ultimatrix on Ultimate Cannonbolt's chest are gone.
  • When Ultimate Cannonbolt punched the Mutant Frog, the headband on its forehead was missing.

Prisoner Number 775 Is Missing

  • Prisoner 775's strength rapidly changes throughout the episode.
  • When Ben transforms into Echo Echo, the Ultimatrix hologram pops up, even though Ben didn't touch it.
  • While Echo Echo was running away from the exploding Plumber Ship, his contour has a covered part of the Ultimatrix.
  • When Ben's team was picking up the sheriff who was knocked out, his badge changed from grey to gold.
  • When Kevin absorbs the car, his fingers are on the glass, yet he still gains a metallic layer.
  • In one scene, after Humungousaur fought Prisoner 775, Prisoner 775's spout on his body appearance is reversed.
  • When Prisoner 775 slipped from Gwen's mana shield, his teeth contours were the same color as his skin.
  • When Gwen was shielding Prisoner 775, Kevin was shifting between his normal form and his metal form.
  • When Prisoner 775 looked at the window of Colonel Rozum's house, it showed Rozum's Wife holding their baby who had only a white blanket over him. But in the next scene, the baby was chewing a blue pacifier in his mouth.
  • After Prisoner 775 looked at the window and Wildmutt jumped on him, and he threw Wildmutt back, saying "Leave me be, I intend to balance the scales", his eyes were reverse colored, but then changed back to the regular colors.
  • When Gwen says, "No, no, no! Behind you!", the "Rozum" plate on the mailbox behind her was facing the house instead of facing away from it.
  • When Ultimate Wildmutt was holding Prisoner 775's tail, his upper lip wasn't black.
  • On one scene, one of Ultimate Wildmutt's teeth had the same color as his tongue.
  • When the Ultimatrix was stating that Prisoner 775 was available, it was colored darker.
  • One of the Plumbers' neck was covered with his suit at one point.


Simian Says

  • There is no reason that the DNA sample in the Codon Stream should be affected if the Arachnichimps are taken over by DNAliens, as Azmuth said that the Omnitrix can even bring an extinct species back to life.
  • Even though Simian does not mention that Mizaru is a crime boss, Ben says "Are you telling me you willingly brought a Xenocyte to your home world and set it loose on a crime boss?"
  • Terraspin's Ultimatrix symbol disappears for a brief moment.
  • Even though the DNA sample of the Arachnichimps was not restored to the Codon Stream, Ben was able to turn into Spidermonkey.
  • When Simian was on the ground after being rescued by Kevin, he has an Ultimatrix symbol.
  • When Simian's hands were on a stone there was a mold of his fingers, but when he turns around to Ben there was no mold of his hands.
  • When there was an Arachnichimp hologram on Eunice's ship, the Arachnichimp had an Ultimatrix symbol for a second.
  • In one scene, Eunice's hair bang is on the left side instead of right.

Greetings from Techadon

  • In the shot of Brainstorm's completed diagram of the "Death Hole", the dinosaur statue and the robot statue are missing.
  • When Brainstorm says, "Winning. It's what I do.", he has a black stripe along his back.
  • Right before Brainstorm turns around to see the yellow Techadon robot, his Ultimatrix symbol is all black and a rock in the background is overlapping his arm.
  • After Rath turns around to fight the Techadon robot again, his Ultimatrix symbol briefly becomes white.
  • On one scene, Rath's arm is entirely orange.
  • The silver Techadon Robot manages to hit an intangible Big Chill with a pole.
  • In one scene, Ultimate Big Chill's head is all red.

The Purge

  • In many scenes, Argit's jacket stripe is brown or missing.
  • When Argit steps out of his ship, one of the vents in NRG's suit is miscolored.
  • When Argit is talking to the team, Gwen's hair becomes transparent for a second.
  • When Argit grabbed a cape, it was purple, but then changed to red in the next scene.
  • When the Dragon Robot was attacking, Argit stands in front of Ben. In the next scene he stands behind Ben.
  • Just like in Girl Trouble, Lodestar's voice is high-pitched. His back was also different than it's supposed to be.
  • On the Rust Bucket 3, Argit's ear is yellow.
  • Argit's shirt was brown when they pretended to leave the market.
  • In one scene, Ben's jacket stripes were gone.
  • When Ben says "Guess they heard I was coming", the side of his Plumber Badge turns light grey.
  • When the Forever Knights were shooting at Upchuck, he had the energy in his mouth before he was even hit.
  • When Ben is giving his monologue, Kevin was in his human form, instead of his metal form. Also, the Ultimatrix's dial is much lower and smaller than usual.

The Flame Keepers' Circle

  • The flashback shows Vilgax's ship exploding in mid-air despite the fact that it was underwater when it exploded.
  • When Ultimate Big Chill says "Alright, you win." his mouth moves.
  • When Ben turned back into regular Big Chill before turning into himself, the four spikes are clearly visible on the Ultimatrix symbol.
  • When Ben is about to transform into Echo Echo the Ultimatrix seems to be turned off.

Double or Nothing

  • At the beginning of the episode, at the Burger Shack, when Kevin was eating his burger and Gwen is playing with her fries, you can see that the table is dirty because of the ketchup. But after a few seconds, the ketchup was gone.
  • When Vilgax is taking his bow, Albedo's hair is shown white instead of brown for a second.
  • The scene when Albedo took off his wig and looked at Ben, his left eyebrow is touching his eye, but in the reflection of it in the mirror, it is higher up.
  • After NRG shot his nuclear laser at Fridge, his shoulders color were white instead of grey.
  • In one scene, when Ben is talking to Albedo, Ben's jacket line's on his right arm is gone.
  • When Hugh was holding NRG, NRG's helmet was as wide as his body.
  • When Hugh is talking about his celebrity status on Earth, the camera switches angles and Hugh's glasses disappear. When the camera pans back, his glasses reappear.
  • When Albedo said to Ben "I blame you!", the emblem 10 on his jacket is same color like Albedo's.
  • At the end, when the man who sues Ben is walking off into the distance, the other two men that were with him are not seen.

The Perfect Girlfriend

  • At Ben's house after Julie rescues him from Ssserpent, Gwen is missing her stockings.
  • After Gwen returns home from the hospital, she is wearing stockings on under her cast.
  • A few seconds after Kevin threw his glasses on the ground, they were gone.
  • In one scene, Way Big's left shoulder is white.
  • Echo Echo's wires are not rendered properly before he reverts to Ben.

The Ultimate Sacrifice

  • Through the entire episode, Sentient Ultimate Humungousaur claws are grey instead of black.
  • Even though the Ultimatrix created Ultimate Humungousaur, Sentient Ultimate Humungousaur mentions having a mother.
  • When Sentient Ultimate Humungousaur transformed into the Ultimatrix, the black switch on the Ultimatrix was not there.
  • Ghostfreak's back line pattern changes twice.
  • Heatblast's lines on his body are different when he is in the ice.
  • Ben has an Ultimatrix even though he is inside the Ultimatrix itself.
  • Way Big is once again smaller than usual.
  • In the final scene, Sentient Ultimate Echo Echo looks smaller.
  • When Azmuth was fixing the Ultimatrix, for a split second, part of his jaw was in front of the watch.

The Mother of All Vreedles

  • When Ben receives an incoming transmission while in the Rust Bucket 3, the Ultimatrix is seen on his right wrist.
  • When Ben tricks Ma Vreedle into letting him go, the underneath of the Ultimatrix cannot be seen.
  • Octagon's Plumber Suit had a white circle instead of a grey one at the end.

The Widening Gyre

  • In two scenes the insignia on the sleeve of Colonel Rozum appears on the right hand.
  • In one scene, the side of Terraspin's shell was the same color as his skin.
  • In one scene, when Terraspin in rapid spinning form was battling the Mutant Seagulls, his Ultimatrix symbol on his chest had no black color.
  • When Kevin grabs the Garbage Monster from behind, NRG's head is the same color as his body.
  • When the Garbage Monster changes from the island into the monster, Ben, Gwen and Kevin are close together. But when the scene changes, they appear to be far apart.
  • When the Rust Bucket III flies in to help Way Big, Agent Bryson says, "Laser cannons are armed and hot!", making it clear that they are going to fire lasers at the Garbage Monster, but they launch two missiles instead of lasers.
  • They say that the trash island is twice the size of Texas but when they show an overhead view of the island near land, it is no bigger than the bridge it is next to.

A Knight to Remember

  • In one scene, one of the five Plumbers had purple eyes instead of black eyes.
  • When Driscoll shoots the team, his hand/gun does not move. He fires three shots to exactly the same point but the trio still collapse.
  • When Kevin and Ben are arguing about Gwen's teleportation, the wall next to Gwen is about waist height, but in the next scene it changes to about shoulder height.
  • Inside the Rust Bucket 3, the signs on the floor are dark, but in one scene they are light.
  • On one scene, Kevin isn't piloting.
  • When Kevin absorbs a metal helmet, he becomes a different color. He switches between the right and the wrong color in several shots.
  • When Ben is defeated as Eatle, he lands on his back. But when he reverts to normal, Ben is on his stomach.
  • When Ben says "stop" to George, Gwen's collar is the color of her skin.
  • In the end credits Fasttrack's name is misspelled "Fastrack" and Dagon's name is misspelled "Diagon".

Solitary Alignment

  • When Azmuth says to George "You think I can't?", Azmuth's black middle strip on his suit is gone. But after he said that, the strip reappeared.
  • When Ben shouts the name of Fasttrack, his mouth didn't move.
  • When George deflects Ultimate Humungousaur's missiles with his sword, the effect is more akin to deflecting bullets than explosive projectiles.
  • The credits misspell Fasttrack's name as "Fastrack".

Inspector 13

  • After Inspector 13 opened the garage door, Kevin's Car appears next to him.
  • When Gwen appears in Kevin's garage she has a sweat band on her left wrist then when Kevin tells her to power up, the sweatband is gone.
  • After Inspector 13's ship arrived, Echo Echos' rackets were gone.
  • After the ship lands, the net disappears, and not only does an Echo Echo disappear, but Julie is also on their side. In the next shot immediately, the second Echo Echo disappears.
  • In one scene, when Julie was punching the ship, the door was gone.
  • Inspector 13 says "No one has seen us and lived". He said this although he knew Kevin and Julie had tried fighting him and survived.
  • When Ben is strapped to the torture table, the position of the shackle on his left hand keeps changing. For a while, the Ultimatrix is partially inside the shackle, then it comes out and goes back in.
  • Several times, Kevin's armor changes color.
  • When Diamondhead is falling there is no back diamond.
  • After Kevin's car crashes, Clockwork's left foot disappears.
  • When Gwen as Rath tears off the head of the Techadon Robot, there are four fingers on her head.

Enemy of My Frenemy

  • The team comments on how Ledgerdomain had visually changed, but the realm looked exactly like it did in its first appearance.
  • When Gwen casts Liberatio, the background within her hair is white.
  • After Kevin had talked about teaming up with evil guys never ends well, Ben mentioned Dr. Animo, Darkstar, Connor, Vilgax, and Charmcaster. Ben and Gwen had teamed up with everyone but Dr. Animo.
  • In one scene, Ben's jacket stripes are on both sleeves.
  • In a couple of scenes, Eatle's back fin has a green line on it.
  • When Spellbinder reprimands Charmcaster for what she did to get him out, the magenta circle on his chest was missing.
  • In the end of the episode, while Ben lifts both his hands saying "who's up for a smoothie?", the Ultimatrix is missing.

Catch a Falling Star

  • One inmate has an orange stripe on his chest instead of white.
  • When Ben and Gwen were in the car, Gwen was not wearing her black stockings.
  • When Ben nearly hits the truck the Ultimatrix symbol is missing from the wheels of his car.
  • When Jennifer was talking to Carl Nesmith in the limo, first her arm was under his arm, but in the scene after, her arm was above his.
  • In one scene, the white stripe on Nesmith's chest was on the right side.
  • For some reason, Goop's Anti-Gravity Projector was once more able to pass under the door, the first time being in ...Nor Iron Bars a Cage.
  • When Ben was Goop, he said he accidentally melted the doorknob, but the doorknob was still intact.
  • Gwen says "Remember, keep it quiet". After that she says "That's your idea of quiet?" even though Ben did not actually make any noise other than the sizzing of the doorknob melting.
  • When Ben is fighting Carl, half of Carl's mustache is briefly skin-colored.
  • When Gwen finds Clockwork unconscious, the black stripes on Clockwork's arms are missing.
  • When Swampfire complains about the smell of the operating room, the bowl that Gwen later suggests has blood in it, is empty.
  • When Ben leans Gwen against the wall, he removes his hand, but then his arm is behind Gwen's back again.
  • When Carl says, "Then we can be together, forever!", his Nemesis glove is first on his right hand, but then his left.

The Eggman Cometh

  • When Natalie Tennyson is cooking in the kitchen, the dish in her hands changes size.
  • When Gwen talks on the phone, Kevin has six cartridges instead of seven.
  • When Kevin is teasing Ben when he wants to continue their training, when Ben raises his Ultimatrix arm up, the Ultimatrix is overlapping his jacket.
  • In Kevin's car, Ben moves from the left to the right and then to the middle.
  • In one scene, Kevin is not wearing a seatbelt.
  • When the trio leave the police station, they leave the door open, but in the next scene, the door is closed.
  • When the scientist is talking, Ben's jacket stripes are gone.
  • In the scene in the old steel mill, before Ben becomes Big Chill, the garage-type door behind him is open, but after he transforms, the door is closed.
  • Before Ben becomes Big Chill, the hologram doesn't appear on the Ultimatrix.
  • When Gwen blasts the wall behind Dr. Animo, the area behind it is shown to be outside, but in the next scene, it is shown to be another room.

Couples Retreat

  • When Ben is reading the spell and shows the page to Gwen, it is empty.
  • When Kevin and Ben are talking about Charmcaster beating Darkstar, the thickness of Ben's shoulder stripe changes.
  • Gwen's Spellbook was missing the gold outline on the cover.
  • When Jetray was talking, he only had three top teeth.
  • It seems strange that Darkstar was unable to absorb electricity during his second fight with the team when he was seen safely absorbing some electric energy without difficulty right before the fight.
  • At the end of the episode, Charmcaster's collar was entirely black.

Night of the Living Nightmare

  • When Ben was fighting the Dream Eater, the Ultimatrix's dial was turned.
  • In one scene, Vilgax's left fingers are green instead of gold to match the Shield of Seagle.
  • Goop changed directly to Ultimate Spidermonkey without first turning into Spidermonkey.
  • Just like in The Purge, the design on Lodestar's back is different in one scene.
  • The soles of Eatle's feet change from purple to silver in-between scenes.
  • In one scene, the door on Kevin's car is grey instead of green.
  • When Ultimate Kevin is holding Ben by his wrist, Brainstorm's arms are discolored for a split second.
  • When Ben smacks the Ultimatrix to turn into Swampfire, the dial isn't pushed down.
  • Albedo's nightmare has several errors:
    • At first, Cannonbolt is behind Diamondhead, but then he is in front of him.
    • Four of Diamondhead's six back shards are smaller than usual, looking more like stubs than shards.
    • Lodestar is much bigger than usual, being taller than Armodrillo and almost as tall as Ultimate Humungousaur, although the latter is also smaller than usual.
    • Ultimate Swampfire's face is different, being more hexagonal in shape, his facial pattern is reversed, and it seems to overlap the shells on his back rather than being separated by his bark-like skin.
    • Upchuck is missing most of the stubs on the back of his head, as only one is visible from the angle he is seen from.

The Beginning of the End

  • When Four Arms sits, his underwear is red.
  • When Clockwork showed the past in The Eggman Cometh, Gwen and her mom were talking backwards, but when Clockwork showed the past this time, Conduit Edwards was not talking.
  • When Goop was cut into half by the Forever Knights, even the Ultimatrix was cut.
  • After Sir George killed Edwards, Winston was lying in a crater. However, when he was hit by the energy blast, there was no crater.
  • When Heatblast lands in the depression he created, the hole is about his waist level. However, in the next shot, it is at his knee and in the shot after that, it is almost at his chest.

The Ultimate Enemy: Part 1

  • When the wave turning humans into Esoterica reaches the tennis stadium, all the people should have transformed at once. However, Julie's opponent becomes an Esoterica and after about three seconds, the crowd follows suit.
  • The crowd watching Julie's match also doesn't react or even move their heads at all when they see Ship form around Julie.
  • When Gwen is under the control of Dagon, Humungousaur has lips the color of his skin.
  • When Gwen overpowers Humungousaur, the glow on her hand is missing.

The Ultimate Enemy: Part 2

  • Before Ultimate Way Big pulls Dagon from the sky, his left shoulder is discolored blue. This also occurs with his hands before he changes back.
  • The river that Ultimate Way Big battled Dagon in covered his feet, but when he reverted to Ben, it had become much shallower.
  • When Ben transformed into Ultimate Wildmutt, he only had three gills instead of four.
  • When Ultimate Wildmutt was attacking the Esoterica, his lips were the same color as his skin.
  • In one scene, after Ben transformed into Ultimate Wildmutt, Kevin's body was not covered in metal.
  • After Ben had gotten up after reverting from Chromastone and Sir George had been turned to dust, Gwen appeared noticeably taller than Ben despite the fact that they are normally around the same height.
  • In one scene, after Vilgax destroyed the Plumber base, Gwen's helmet was gone.
  • When Ben raises Acalon against Vilgax, the Ultimatrix can be seen poking out of his sleeve. However, when the sword armors him up, the Ultimatrix can't be seen, despite the fact that it clearly would be.
  • In the scene where Ben is in the midst of being tempted by Vilgax into using the power of the Ultimatrix, Ascalon, and Dagon to rid the universe of evil, Julie suddenly is able to help Gwen and Kevin talk him out of it, despite not being present when the conversation started and shouldn't know what's happening.
  • Strangely, when Vilgax is stripped of his powers, he has his regular clothes back on, which is impossible as it was shown in Alien Force's series finale that he shed his clothes when he transformed into his true form.
  • When the camera shows Ben thinking about what to do with all the power he had, Gwen is seen once again without her helmet on.
  • The flashbacks from previous episodes showed scenes that Ben wasn't present in despite said flashbacks supposedly coming from his mind.
  • When Ultimatrix's detached himself, in one second Ultimatrix's symbol has turned to the right.

Ben 10/Generator Rex: Heroes United

  • When Ben and Rex were on the building, Lodestar's mouth was open when the billboard started to fall.
  • When Rex is trying to remove the nanites from Rath, Rath has dark green pupils.
  • In one scene, Rath has five fingers. Additionally, in one frame after saving the reporter and her cameraman, one of Rath's eyebrows was colored white, similar to his reboot counterpart.
  • When Rex is first holding Six his glasses are off and his eyes are closed, then when Rex tells Ben it was all his fault Six has his glasses on.
  • When Big Chill was talking to Rex after escaping from Providence the inside of Big Chill's eyes were light green and the outside was dark green, but when he froze Rex's fist the inside of his eyes were dark green and the outside was light green.
  • In one scene, Diamondhead's head has an error.
  • In Ben's flashback:
    • Echo Echo appears twice, but with different designs.
    • Heatblast and Stinkfly's designs were taken from the original series.
    • Goop's Anti-Gravity Projector is missing.
    • Cannonbolt's eye dashes are green.
    • Wildmutt's missing his middle teeth.
    • Big Chill's wings are missing.
    • Ripjaws has one pink eye and one green eyebrow.
    • Diamondhead's spikes are missing.
    • AmpFibian's white swipes in the middle of his body are missing.
    • Upgrade only has one line on his body.
    • Four Arms is also missing part of his body, he cuts off at XLR8's head.
    • Jetray is missing black borders around his eyes.
    • Chromastone's teeth are green rather than white.
    • Cannonbolt's white body is darker, especially compared to Echo Echo right above him.
    • Spidermonkey's eyes appear pure black, save for the green pupil, rather than having green around them in a ring.
    • Four Arms, Upgrade, and Rath are all in their UAF designs rather than their new designs for Heroes United.
  • During the flashback, Ben says there is DNA in the Omnitrix even though he is wielding the Ultimatrix (and that the DNA is actually on Primus).
  • When Ben transformed into Upgrade, the Ultimatrix symbol wasn't there at all, but when Upgrade merged with Rex, the Ultimatrix symbol appeared.
  • When Ben reverts from quite a few aliens in this crossover, the sound of the Ultimatrix being activated and then hit down is played.


Crew Statements

Charlotte Fullerton

Dwayne McDuffie