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34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity
This article is about the episode. You might have been looking for the location of the same name.

The Forge of Creation is the sixth episode of the second season of Ben 10: Ultimate Alien, and the sixteenth episode overall.


Professor Paradox holds the key to stopping Aggregor from tapping into the limitless power of Alien X.[CN 1]


With Ultimate Aggregor having all four pieces of the Map of Infinity, it looks like his plan will come to fruition. On Galvan Prime, Azmuth scolds Ben, Gwen, and Kevin for failing to stop him. As Azmuth believes that all hope is lost, Ben says there is still another way to stop Ultimate Aggregor. He says that Kevin made a security system to prevent an accidental transformation of Alien X, or if Albedo were to get access to it; so Gwen and Kevin give Ben their keys, revealing to have unlocked Alien X, after which Ben transforms into him.


Ben transforms into Alien X for the second time

Azmuth suddenly believes that they have a chance, stating that Alien X "can do anything". Inside Alien X, Ben tries to get the attention of Serena and Bellicus, hoping they can cooperate. As they begin arguing over minor things, Professor Paradox suddenly appears, making the two personalities furious and they attempt to destroy Paradox, as he is prohibited to be within 500 light-years of them, until Paradox reverts Alien X back into Ben.

As the one who hid it, Paradox can bring the team to the Forge of Creation. After some arguing, Azmuth and Paradox explain that Aggregor's plan was to use the Map of Infinity to enter the Forge of Creation, where Celestialsapiens, like Alien X, are born. Ultimate Aggregor is intent on absorbing the powers of a newborn Celestialsapien that has not developed multiple personalities, and with that power, he would be unstoppable.

Paradox brings Ben, Gwen, and Kevin to the entrance to the Forge of Creation, where he leaves them as he cannot go there. The group fly the Rust Bucket 3 into the Forge of Creation, but something hits the Rust Bucket 3, and the group is attacked by Aggrebots. Ben transforms into Terraspin and attacks the soldiers. Terraspin manages to create a tornado that sends them flying out of the Rust Bucket and transforms back into Ben. Unfortunately, Kevin's jet hits a wedge in the time barrier and Ben leans against the invisible barrier and falls in. Gwen saves Ben by pulling him out of the barrier with her mana and find Ben's 10-year-old self emerging as well.

Young Ben says that Ben looks familiar and asks his older self questions. Young Ben then recognizes Kevin and believes him to still be evil. He transforms into Heatblast and fights Kevin. Ben tries to transform into Big Chill to stop Heatblast, but he transforms into NRG instead. Heatblast attacks NRG, but NRG blasts Heatblast, sending him flying away. Gwen saves Heatblast through bringing him to the ground with her mana and he reverts back into Young Ben. Young Ben recognizes Gwen as well but doesn't believe that NRG is him six years later until he transforms back into Ben.

Young Ben is still suspicious of Kevin and the team returns to the problem of the Rust Bucket 3 being stuck in the invisible barrier. Young Ben transforms into Wildmutt and starts eating the ship. Ben reverts Wildmutt back into Young Ben, which causes Young Ben to be puzzled about how Ben was able to revert him back into normal and Ben responds that his younger self should keep the Omnitrix locked.

The ship somehow gets free, and they fly through a field of floating Celestialsapiens. The group warns Young Ben not to get their attention, but Young Ben annoys the rest of the team. Kevin tries to reason with Young Ben that not everything is a game and that they take their work seriously, but Young Ben tells him that his joking is his way of coping with the large stakes of his battles, knowing if he were to lose, someone could die (let alone if they mess up now, everybody could die). When Gwen asks Ben about if this is true, Ben denies that he thinks this way as well. Young Ben looks at Ben's aliens in the Ultimatrix (Young Ben calls Brainstorm "lame" and Goop "weak" but thinks Humungousaur is okay) as they arrive at a female Celestialsapien holding an infant in her outstretched arms. They crash into her hands.


Teen Four Arms and Young Four Arms facing Aggregor

In the jet, Ben attempts to transform into Big Chill again while Young Ben attempts to transform into Upgrade, but both Bens transform into Four Arms and break out of the Rust Bucket 3. Ultimate Aggregor arrives with the Map in his hands and attacks the team. He defeats Gwen and lands. Ultimate Aggregor is surprised that Ben and the others arrived at the Forge of Creation before he did, but also says that he will kill Ben and take the Celestialsapien.

The team fights, but their attacks have no effect. Four Arms transforms Young Four Arms into Stinkfly and transforms himself into Swampfire, then goes Ultimate. Stinkfly says Ultimate Swampfire is just a copy of Wildvine. Ultimate Swampfire catches Ultimate Aggregor in vines, but he escapes. Ultimate Aggregor defeats Stinkfly and Ultimate Swampfire, and they both revert to human. With the team supposedly defeated, Ultimate Aggregor approaches the Celestialsapien. Young Ben tells Kevin that he can still defeat Aggregor by absorbing the Omnitrix as he did before, but Kevin refuses, as he tells Young Ben the only way to end this battle is to absorb the Ultimatrix, in which he once again mutates into an amalgam of Ben's aliens. When Aggregor is closer than ever to absorbing the baby Celestialsapien, Kevin prevents him from going any closer and overpowers him. In that fight, Kevin overpowers Ultimate Aggregor, even absorbing his energy. This causes Aggregor to revert to his normal self, transferring his prisoners into Kevin in the process.


Kevin's sacrifice

Kevin tries to finish Aggregor until Ben tells Kevin to stop. Absorbing the Ultimatrix had cost a high price, with Kevin having gone crazy with energy, mentioning the idea that he would probably absorb the Celestialsapien for himself. Young Ben reasons with Kevin, explaining he was just as insane as he was six years ago. Realizing that he's right, Kevin spares their lives, as well as that of the Celestialsapien, but points out that he won't be so merciful the next day, as he flees. Paradox arrives and says that they shall deal with Kevin another day, congratulates them on Aggregor's defeat, and that he will return Young Ben home. He reveals that Young Ben will remember this day as a dream, and it will cause him to trust Kevin. He also tells Ben that he will do what needs to be done. Ben vows to take care of Kevin.

Noteworthy Events[]

Major Events[]

Character Debuts[]

Ultimatrix Alien Debuts[]

Omnitrix Alien Debuts[]

Minor Events[]

  • The Ultimatrix's lock function is introduced.
  • Alien X is revealed to be a Celestialsapien.
  • Other universes are revealed to exist.



Aliens Used[]

By 16-year-old Ben[]

By 10-year-old Ben[]


(While Serena and Bellicus are arguing)
Paradox: Hello!
Ben: Professor Paradox?
Paradox: You will not convince Serena and Bellicus to help you, not today.
Bellicus: Am not.
Serena: Are too- Time-walker! You are not welcome here!
Bellicus: Agreed! Resolved, punish Paradox for ignoring the treaty between him and Celestialsapiens race!
Serena: Seconded!
Paradox: I'm not supposed to get within 500 light years of them.
Bellicus: Resolved. Destroy Professor Paradox!
Paradox: It's time to leave!

Paradox: That is the next universe over. I don't like it at all. The physics are terribly counter-intuitive.
Kevin: Wait, I thought the universe was everything.
Paradox: A common error of the parochial mind. There's always more to reality than one imagines.

Ben: Since you need to cool off, I vote Big Chill!
(Transforms into NRG)
NRG: NRG! Ugh. Can't I catch a break?
Young Heatblast: I'll break something for ya!
(Knocks NRG down, NRG blasts Heatblast high into the air. Gwen catches him and puts him down)
Gwen: Be careful Ben! It's dangerous out here!
Young Heatblast: Not as dangerous as me.
(Transforms back to normal)

Gwen: Or it'll make a 21-year-old you to add to the set.
Young Ben: Awesome!
Gwen: So not awesome.

Young Ben: No problem! I'm all recharged!
(Transforms into Wildmutt and starts eating Kevin's spaceship) (Ben touches Young Ben's Omnitrix and turns him back to human)
Young Ben: Hey! How'd you do that?
Ben: You should always keep it locked.

Gwen: Ben! No more sugar! Give.
Young Ben: I don't have any!

Young Ben: Your butt is huge.
Gwen: What did you say?
Kevin: He said your butt is-
Young Ben: It was just an observation.
Gwen: You were trying to hurt my feelings.

Young Four Arms: I was going for Upgrade.
Four Arms: Yeah? Well I was going for Big Chill.
Young Four Arms: How much stronger do I get when I'm older?
Four Arms: A lot!

Young Four Arms: Can't fight him like this. Shoulda picked a flyer.
Four Arms: Not a bad idea. (Transforms Young Four Arms into Young Stinkfly)
Young Stinkfly: Stinkfly? How'd you-
Four Arms: You'll learn how to do it later! Give me some cover!
Young Stinkfly: (Nods)
Four Arms: (Transforms into Swampfire) Swampfire! (turns into Ultimate Swampfire) Ultimate Swampfire!
Young Stinkfly: Plant guy? It's just a copy of Wildvine.
Ultimate Swampfire: Sure... Remember the time Wildvine did this? (Throws seeds)

Young Ben: Where do baby Alien Xs come from?
Kevin: When two constellations love each other very much-.
Gwen: Kevin!

Naming and Translations[]

Language Name Origin
Arabic بوية الخلق The Essence of Creation
Hungarian A Teremtés Múhelye The Granulator of Creation
Polish Kuźnia Stworzenia The Forge of Creation
Portuguese (Br) O Centro da Criação The Center of Creation
Romanian Cuptorul Creaţiei The Furnace of Creation
Spanish (HA) El Fuerte de la Creación The Fort of Creation
Spanish (Spain) La Forja Creacional The Creational Forge


Voice Actor Role(s)
Yuri Lowenthal Ben Tennyson
Alien X
Ashley Johnson Gwen Tennyson
Greg Cipes Kevin Levin
Dee Bradley Baker Terraspin
Ultimate Swampfire
Four Arms
John DiMaggio Aggregor
Young Four Arms
Jeff Bennett Azmuth
Tara Strong Young Ben
David McCallum Professor Paradox




  • For a split second, Terraspin is missing a hole on his body.
  • When Kevin is first shown trying to fix the wing of the Rust Bucket 3, he is far away from it, but in the next shot, he is near where the wing got stuck. Furthermore, Ben and Gwen are far away from Kevin in the first shot, but near him in the next.
  • In one shot, Gwen's collar is red instead of white.
  • In many shots, Young Ben's Omnitrix contains an error. There are 2 buttons on the Omnitrix, as this was an animation error in the classic series and is supposed to have just one button on the side that is facing Ben.
  • 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.
  • When Young Ben activates the Omnitrix to turn into Heatblast and Wildmutt, he does so without pressing the activation button.
  • Before Young Ben transforms into Heatblast, the Omnitrix's dial is at an angle.
  • In one shot, Heatblast's Omnitrix symbol has a thicker black outline.
  • Big Chill's hologram faces away from Ben.
  • Wildmutt's silhouette faces away from Young Ben and is drawn incorrectly.
  • Wildmutt is missing his tongue until he bites part of the Rust Bucket 3 off.
  • Throughout the episode, Young Ben is surprised to see that 16-year-old Ben can change him between aliens despite Ben 10,000 changing him between aliens in Ben 10,000.
  • When Gwen talks to Young Ben after he insulted her, there is a horizontal line on his left arm.
  • In the scene where Young Ben looks through the Ultimatrix, it is colored like the Omnitrix. Furthermore, the aliens' holograms face him instead of facing 16-year-old-Ben.
  • In one shot, 16-year-old Four Arms' eyes are miscolored yellow.
  • When 16-year-old Four Arms is about to change 10-year-old Four Arms, his Omnitrix 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 shoots lasers at Ultimate Aggregor instead of slime projectiles.
  • The color of Young Stinkfly's lasers changes from green to blue.
  • When Ultimate Aggregor is trapped by vines, he briefly has an Omnitrix symbol.
  • Ultimate Swampfire reverts to Ben without reverting to Swampfire.
  • 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.
  • In one shot when Young Ben asks Kevin to absorb the Omnitrix, the Omnitrix's button is partially green.
  • The orb containing the Baby Celestialsapien is much closer to its mother's hand than before when Ultimate Aggregor goes to absorb its powers.
  • When Ultimate Aggregor reaches for the baby, he uses his left hand. However, in the next shot, 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 Jetray fought against Ra'ad in Fused, the latter wasn't harmed by Jetray's neuroshock blasts. However, when Ultimate Kevin shoots Jetray's neuroshock blasts in Ultimate Aggregor's face, Aggregor is harmed by it.
  • When Ultimate Kevin growls after Young Ben tells him he's too busy feeling sorry for himself, his eyebrow is black for a frame.
  • When Ultimate Kevin jumps to fly away from the Mother Celestialsapien, his legs are blue along with his pants.
  • When Gwen kisses Young Ben on the cheek, his Omnitrix looks different.


Ff b10ua weeklycode wildmutt 384x216

FusionFall weekly code advertisement

  • The episode's title is listed as The Forge Of Creation on Amazon Prime Video.
  • In the Malay dub of this episode, the scene where Young Ben teases Gwen and Kevin's joke about how baby Celestialsapiens are born were deleted for slightly suggestive dialogue.
  • In the Indian dub of this episode, Kevin's suggestion about what happened to Gwen, the butt joke, the baby Celestialsapien joke and the part where Young Ben calls Kevin a jerk are censored.
  • In the Arabic dub (Image Production House) of this episode, Young Ben's jokes about Gwen's butt being huge and her not getting enough blood to her brain because of it were replaced by her having bad hair and her brain being bad because of her hair.
  • FusionFall released a Wildmutt set in relation to this episode.
  • The Celestialsapiens had taken notice of Ben, his friends and Ultimate Aggregor's presence, and they were debating over what to do.[DM 2]
  • Ultimate Aggregor wanted to absorb the powers of the Baby Celestialsapien instead of a fully-grown one because its personalities hadn't developed.[DM 3][DM 4]
  • Ultimate Kevin absorbed Aggregor's powers because he wanted to, not because he needed to.[DM 3]
    • He did not change in appearance when he did so because he only absorbed his energy, not his genetic structure.[DM 5]
    • Aggregor used a machine to change the Andromeda aliens into energy, so he could absorb all their power. Kevin absorbed this energy.[DM 6]
  • Ben locked Alien X during this episode.[DM 7] Therefore, Ultimate Kevin does not have Celestialsapien DNA.[DM 8]
  • Ben was being hyperbolic when he claimed that Ultimate Kevin was crazier than Kevin 11.[DM 9]
  • 16-year-old Ben does not remember the "dream" where he experienced the events of this episode as a 10-year-old.[DM 10]
  • If Ben had gone through the Chronal Randomization Barrier again a few times to get more Bens, they still wouldn't have been able to defeat Aggregor without Kevin absorbing the Ultimatrix.[DM 6]
  • When asked if the "next universe over" was our universe, Dwayne McDuffie replied with "It would've been funny if it was..."[DM 11]
    • It was just a random universe and not notable in any way.[DM 12]
  • Dwayne had wanted to bring back Young Ben in Season 1, but the crew did not have the budget to do the story he came up with.[DM 13]
  • When asked why Aggregor did not use the Door to Anywhere to travel to the Forge of Creation, Dwayne stated that Aggregor has never heard of it.[DM 14] However, this is not true, as he used it to travel to Legerdomain in Where the Magic Happens.
  • There is no real reason for Young Ben's aliens' Omnitrix symbols being colored grey and green instead of grey and white, like in the Original Series. That's just how the crew decided to color it.[DM 15]
    • The symbols being grey and white in the Original Series was later explained as being caused by a scratch guard on the Omnitrix, which fell off after Destroy All Aliens and before this episode from Young Ben's perspective.[DJW 1]
  • Dwayne speculated that Kevin would have been able to defeat Aggregor if he absorbed Young Ben's Omnitrix, but it would have been more difficult.[DM 6]


Crew Statements[]

T.J. Collins[]

Dwayne McDuffie[]

Derrick J. Wyatt[]

Cartoon Network[]

Ben 10: Ultimate Alien Episodes