Ben 10 Wiki
Ben 10 Wiki
34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity

What's the matter, Ben? Aren't you glad to see me? Haven't you learned by now that nothing can stop me?!

– Zs'Skayr to Ben after being resurrected by Dr. Viktor.[3]

Zs'Skayr (pronounced "Zuh Scare"), also known as Ghostfreak, was the Ectonurite High Ecto-Lord of Anur Phaetos and Anur Transyl in the Anur System. He was originally stuck in the form of Ghostfreak, as a separate personality that would influence Ghostfreak's actions. Over time, he managed to gain enough control over the form that he could escape from the Omnitrix, becoming one of Ben Tennyson's most dangerous enemies.


In the Original Series, Zs'Skayr had a ghost-like body. It was gray-purple and had black lines running across his chest. His head resembled a grey-brown skull turned upside-down, which had uneven teeth, black lips, and one purple eye. He had long black nails, and there were some tears in his skin, revealing black and white striped tentacles underneath. He could also become smoke-like by deforming his bodily shape into wisps of grey, somewhat transparent flames.

Just after escaping the Omnitrix, Zs'Skayr looked exactly like 10-year-old Ghostfreak. This included the original Omnitrix symbol peeking out of his skin on his lower left chest too, which was not present on his true form.

In Alien Force, Zs'Skayr's body was purple/blue and he had whitish-grey nails. His spine was sticking out of his back, his tail was fully exposed with black and white stripes and he had spikes on his elbows with whiter, less sharp rows of teeth.

In Omniverse, Zs'Skayr has turned his head right-side up. He now has two eyes, one on his head and one on his chest, and his skin is now modified to look like the hood and cloak of a stereotypical Grim Reaper, complete with a scythe. The spinous processes on his back are larger and more curved, the skin on his arms now hangs down, much like sleeves, and his teeth now look more like human incisors than fangs.


Before, I enslaved your planet, as I will the universe, all I needed was a place to start. Even now my minions built starships to infest other worlds! But now that you're here, I wouldn't mind possessing your power as well.

– Zs'Skayr to Vilgax.[4]

Zs'Skayr has a twisted, arrogant, power-hungry and sadistic personality. Anyone whom he considers as worthless is either tormented for his amusement or is manipulated and later destroyed once their usefulness has ended.

Zs'Skayr is shown to be a careful and brilliant master planner, able to come up with highly resourceful, cunning, and complex schemes and plans, through which he aims to gain immense power for himself and domination over entire worlds. Good examples of Zs'Skayr's ingenuity include his master plan to turn the Earth into a Corrodium-cloaked world of darkness for him to rule over,[3] his resurrection by Viktor[5] and his scheme to drain the Alpha Rune with the purpose of resurrecting the Vladats and regaining his title as High Ecto-Lord.[6]

While Zs'Skayr tends to do most of the work by himself, he does usually recruit residents of the Anur System (such as Viktor, Kuphulu, Crüjo, and Lord Transyl) and other villains. Zs'Skayr's minions are not much more of an exception to his cruelty than his enemies. He has been known to quickly and almost happily resort to violent shows of power and intimidation (often via his possession ability) against other villains to cow them into allying with him when they are uncooperative. He also shows little respect for his minions, and tends towards flashes of abuse and threats when they do not obey him without question.

Zs'Skayr is a backstabber, as seen when he tried to possess Vilgax and take over Vilgaxia after telling him what he was seeking.[4]

Zs'Skayr is highly vindictive and vengeful, a side of him which is especially heightened through his vicious and bloodthirsty personality. His obsession with possessing Ben, besides becoming whole through access to the Omnitrix, is rooted in his spite over his original entrapment in the Omnitrix and his desire to make Ben feel the same way. After being fought off by Vilgax, Zs'Skayr went as far as invading Vilgaxia and turning its people into his Ectonurite slaves.[4]

By human standards, Zs'Skayr can be described as matching the textbook definition of a psychopath, with notable traits being his obsessive behavior, his lack of remorse, his immense sadism, and his enjoyment of the suffering of others.



The original Zs'Skayr was once the High Ecto-Lord of Anur Phaetos. He learned about the Omnitrix from the data files of one of Vilgax's scout probes, which crash-landed on his planet.[pop-up 2][3] He left his planet using the probe and searched the galaxy by possessing many beings.[pop-up 3][3] After some time, he encountered Myaxx while she was collecting samples for the Omnitrix on Flors Verdance.[pop-up 4][3]

Zs'Skayr possessed the Florauna that was being sampled, thereby adding Ectonurite DNA to the Omnitrix as well as Florauna DNA.[pop-up 5][3] Since an Ectonurite's consciousness exists even in a single strand of DNA, Zs'Skayr had effectively copied himself into the device. However, his personality remained dormant within the Omnitrix's DNA database for a long time.

Ben 10[]

2GFO (2324)

Zs'Skayr's first presumed death

Zs'Skayr's mind continued to lie dormant in the Omnitrix when it fell into Ben's possession, with his DNA allowing the young boy to transform into a form dubbed "Ghostfreak". Since adjusting to the Omnitrix was so difficult, Zs'Skayr couldn't take control right away.[pop-up 6][3] However, one time when Ben used Ghostfreak to sneak into a horror movie, he took control and contacted Viktor with his plans.[pop-up 7][3] He also had a few episodes of overriding Ben's personality during fights as Ghostfreak, such as when battling Kraab[7] or Zombozo.[8]

Zs'Skayr first appeared in Ghostfreaked Out, where he finally managed to force his way out of the Omnitrix after taking control of Ghostfreak during a battle with the Circus Freak Trio. After revealing his true form to Ben by ripping off his outermost layer of skin, he tried to take over Ben's body in order to use his human DNA to become whole again. This was because as Ben was the first being to wear the Omnitrix since Zs'Skayr entered it.[pop-up 8][3]

Unfortunately, his weakness against sunlight thwarted his attempt to possess Ben. After possessing a student at Bancroft Academy, Zs'Skayr found the Circus Freaks and coerced them into helping him by taking over Thumbskull and tossing him about like a ragdoll in the room they were hiding in. He was defeated when he was exposed to sunlight by Ben, causing him to burst into flames. Following this experience, Ben was unable (and unwilling) to turn into Ghostfreak ever again.

Afraid (1717)

Zs'Skayr's second presumed death

In The Return, Zs'Skayr was resurrected by Dr. Viktor, a Transylian scientist from the Anur System, who had stolen material from Zs'Skayr's clock tower grave to re-animate his deceased master.

In Be Afraid of the Dark, Zs'Skayr carried out his ultimate goal was to plunge the Earth into total darkness for him to control while maintaining his intentions of gaining control of the Omnitrix. Using Corrodium retrieved by the Mummy and projectors built by the Werewolf, Zs'Skayr and Viktor fired a Corrodium beam to block out all sunlight on the planet, allowing Zs'Skayr to exist in eternal darkness.

While fighting Ben as Frankenstrike, Zs'Skayr dragged him to outside the control satellite and morphed into his complete form due to being in "the darkness of space". He even expressed eagerness in seeing Ben time out and "implode in the vacuum of space". Viktor accidentally rammed a space shuttle piloted by Max into the projector, destroying it. Zs'Skayr was killed once more when Gwen opened the shuttle's roof and exposed him directly to the sun.

Though Ben regained use of Ghostfreak (albeit in his true form) during this time, he refrained from using the transformation for the remainder of the series under the fear that Zs'Skayr may take over again.

Five Years Prior to Omniverse[]

FHtE (485)

Zs'Skayr gets sucked into a portal

At some point after Ben meets Azmuth in Secret of the Omnitrix, Ghostfreak's DNA was removed from the Codon Stream, allowing Zs'Skayr to escape the Omnitrix a second time.

In From Hedorium to Eternity, Zs'Skayr possessed the body of Thaddeus J. Collins and attempted to take over Earth by having his fellow Ectonurites possess people. His plot was discovered by Ben and his friends. After a short battle between him and Upgrade, Cooper reversed the Transmat Portal that brought Zs'Skayr and his minions to Earth, pulling them all back in. Zs'Skayr swore revenge on Ben as he was sucked into the portal.

At some later point, Zs'Skayr was trapped in a Plumber prison designed to hold him, under a beam of concentrated sunlight to keep him helpless despite his new abilities, which he had gained since the end of the Original Series.[DM 1]

Alien Force[]

Zs'Skayr don't want the lights on him

Zs'Skayr incarcerated

In Ghost Town, Vilgax freed Zs'Skayr on the condition that he tell him "the secrets of the Omnitrix [and] the knowledge to defeat Ben". He told him about Primus the location of the Codon Stream. Zs'Skayr betrayed and deceived him after getting free wanting to possess his power to become all powerful. Zs'Skayr took over Vilgax's home planet of Vilgaxia, possessing the citizens and turning them into his minions that resembled his sun-shielded form. Vilgax tried to fight them, but was forced to retreat and went to Earth to ask for help from Ben, Gwen, and Kevin.

Traveling to Vilgaxia, they infiltrated Vilgax's palace and confronted Zs'Skayr, who revealed that Vilgaxia was just the beginning, and his minions were already building ships to spread their master's influence to other planets. During the battle, Ben let Zs'Skayr enter his body, allowing the Omnitrix to resample the Ectonurite DNA which was happened as Ben planned. His plan backfired when Ben transformed into Ghostfreak, Zs'Skayr took control of the transformation and tried to possess Vilgax. However, he was defeated by the light of Vilgax's sword, causing Ben to change back.

Though these events caused Ghostfreak to become available in the Omnitrix once more, Zs'Skayr's consciousness was separated from the transformation.

In Primus, Vilgax recalled how he freed Zs'Skayr for the secrets of the Omnitrix before making his way to Primus.


After Ben destroyed (or dispersed) him in their last battle off-screen, Zs'Skayr's essence ended up in Legerdomain, where he reformed himself using the magic there.[DJW 3]

In Mystery, Incorporeal, Zs'Skayr could briefly be seen crawling out of a portal that was previously opened by Darkstar, allowing him to escape Ledgerdomain.

Making his way to Plumber HQ, Zs'Skayr discovered Viktor trapped in metal and stored in the basement. By taking control from King Xarion, he restored Viktor to his true self. Zs'Skayr then manipulated events while possessing Morty so that he and Viktor could stow away on the Lovely Duck and return to Anur Transyl, where Zs'Skayr could regain his title as High Ecto-Lord.

In Rad Monster Party, Zs'Skayr and his current team (consisting of a restored and liberated Viktor, Kuphulu, and Crüjo) battled Ben, Rook Blonko, Hobble, Scout, and Rad Dudesman only to be driven away when Zs'Skayr himself was defeated by NRG.

In Charmed, I'm Sure, Zs'Skayr drained a large portion of energy from the Alpha Rune he had stolen before teleporting Ben, Rook, Hobble, and Charmcaster elsewhere. Though he thought that it was completely powerless and now useless, that was not the case as Charmcaster was able to use it while fighting Swampfire, Rook, and Hobble.

In The Vampire Strikes Back, Zs'Skayr used the Alpha Rune's power to resurrect Lord Transyl as a powerful servant. From there, he would use Transyl's DNA to resurrect the extinct Vladat race as an army in order to regain his title as High Ecto-Lord. This was against the objections of Dr. Viktor, who remembered how the Vladats enslaved and feasted on his people.

Ultimately, Zs'Skayr's plan came to naught as he was suddenly betrayed by Viktor, and Ben as Atomix created a light orb called "Fusion Cuisine" that vaporized Zs'Skayr's ectoplasm down to its atomic structure and dispersed his remnant particles, which was radiated out in every direction for thousands of miles and some were sent into outer space.[DJW 4] Though Zs'Skayr was already seemingly killed, Atomix decided to leave behind his Fusion Cuisine in Z'Castle Zs'Skayr in the event Zs'Skayr does return.

Powers and Abilities[]

Zs'Skayr can make himself intangible and invisible as both a powerful defense and a way of infiltrating high-security locations.[9] Ghostfreak can choose to selectively make parts of himself corporeal or slightly corporeal. This extended technique can be used to interact with the world or fight while still intangible.[10] It can also be used in a more deadly way by interacting with someone's internal body parts, such as when he passed into Thumbskull's body and incapacitated him without a chance to fight back.[1]

Zs'Skayr can even make people intangible and transparent by touching them, as he did to Frankenstrike to phase the two of them through the floor of a space station and out onto its hull.[3]

Zs'Skayr can possess life forms and take full control of them. Additionally, he can also use whatever abilities his victim possesses after taking control. In the original series, the eyes of anyone he possessed would become black with white pupils and black cracks underneath the eyes.

Zs'Skayr can possess Humans, Florauna,[pop-up 5][3] Vladats,[DJW 5][6] Necrofriggians,[DJW 6] Atrocians, Polymorphs,[DJW 7] Galvanic Mechamorphs, Microchips, Chronosapiens,[DJW 8] and even Celestialsapiens[DJW 9] and other Ectonurites.[DJW 10]

Zs'Skayr can completely remove someone's consciousness while possessing them if his willpower is stronger.[11]

Zs'Skayr can use the tentacles under his skin as a means of scaring his enemies into submission.[8] These tentacles can grow sharp thorns that can be used as lethal weapons.[12]

Zs'Skayr is capable of flight and levitation, which he can use to soar through the air at high speeds.

Zs'Skayr has sharp claws, which can easily tear through Vilgax's Mechadroids.[13]

Zs'Skayr is strong and durable enough to physically fight beings as powerful as Vilgax.[4]

Zs'Skayr can survive in the vacuum of space.[3]

Zs'Skayr is immune to Darkstar's energy absorption ability. This is because Ectonurites do not have mana, as they are not alive in the same conventional way that most other life forms are.[14]

Zs'Skayr has an eerie, glowing eye[merch 1] that was formerly able to move around his body before he removed his outermost layer of skin.[7]

Like all Anur System aliens, Zs'Skayr can see in the dark.[DJW 11]

Zs'Skayr's tail is prehensile.[4]

Zs'Skayr is capable of telekinesis, shown off by when he was still trapped in the Omnitrix, when he used his telekinesis to make flames erupt from Bunsen burners.[1] Zs'Skayr is also capable of telepathy.[merch 2]

While Zs'Skayr was in the Omnitrix, he was able to create telepathic illusions in Ben's mind. He was also able to view and manipulate Ben's dreams.[1]

Zs'Skayr is able to disrupt electronics by phasing through them.[11]

Zs'Skayr can make people feel deathly cold by simply moving right through them.[7]

Zs'Skayr can alter his shape and deform like gas by making himself into a grey, somewhat transparent smoke-like wispy form.[3]

Zs'Skayr can regenerate lost skin.[4]

Sometime after the Original Series, Zs'Skayr gained a few new abilities.[DM 1] One such ability is to convert living creatures into Ectonurite minions by possessing them, briefly merging with them, and then leaving the victim, causing them to morph into Ectonurites completely subservient to him. Being defeated would cause his minions to return to normal.[4]

Zs'Skayr is able to store small objects under his skin flaps.[15]

All members of his race have their consciousness genetically bonded to their DNA. A piece of DNA is all that is needed to re-create the same being entirely.[1]

Zs'Skayr can project powerful energy beams from either the tentacles in his chest and or his hands whenever his skin is peeled back.[3][4]

In his true form, Zs'Skayr's telekinesis is greatly enhanced, being able to even move an entire pillar without effort.[4]

While exposed to total darkness, like that of space, Zs'Skayr's powers and abilities would be greatly enhanced to their full potential.[3]

Zs'Skayr, like all Ectonurites, can rotate his skull.[11]


Zs'Skayr owns a scythe that he can wield with great skill.[11]

With the Alpha Rune, Zs'Skayr was able perform magical feats, such as teleporting Charmcaster away to another location.[15]


Like all Ectonurites, Zs'Skayr is vulnerable to bright light, with sunlight burning him to ashes.[note 1] However, if even a few strands of his DNA still exists, he can be resurrected.[5] This weakness can be negated if he occupies a body that can handle sunlight. Being in light further lessens his abilities. Being exposed to NRG only greatly weakens him rather than kills him.[11] However, Zs'Skayr cannot handle lights as bright as that produced by Atomix's "Fusion Cuisine."[6]

Certain substances can neutralize Zs'Skayr's intangibility and invisibility, such as a special orange liquid used by Kraab.[7] It is possible that Gutrot's species can replicate this liquid in a gaseous form.[DJW 12]

Zs'Skayr's intangibility requires conscious thought to activate, so opponents will be able to harm him if he's caught off-guard, as seen when Ghostfreak got hit by a punching bag that Thumbskull threw at him while he was distracted.[1]

Zs'Skayr can be tracked by opponents who can sense heat or use thermographic vision, as demonstrated by Kraab.[7]

There are a number of weaknesses that Zs'Skayr is vulnerable to if he remains tangible and caught off-guard. For example:

There are certain beings Zs'Skayr cannot possess. For example, Zs'Skayr cannot possess a zombies due to them lacking minds of their own.[18] He is also not able to possess Omnitrix transformations,[1] including the Sentient Ultimate forms (when inside the Ultimatrix);[17] nor Dagon.[DJW 13]

Zs'Skayr possession abilities can be countered. The Omnitrix is capable of protecting its users from Ectonurite possession. As such, Zs'Skayr cannot merge with Ben or any Omnitrix wielder while they are in one of their alien forms.[1] Even in their regular forms, the Omnitrix is capable of holding off Zs'Skayr for a short time.[1]

Even if an Ectonurite does possess someone, it may be possible for them to reject them out of their body, as shown with Ma Vreedle.[19]

Like the rest of his kind, Zs'Skayr cannot survive on Anur Vladias.[DJW 14]

Zs'Skayr can be affected by a Nemuina's sleeping dust.[DJW 15]

Zs'Skayr can be terrified of Toepick's face.[DJW 16] He also greatly fears Ma Vreedle.[DJW 17]


Ben 10[]

Season 2[]

Season 3[]

Alien Force[]

Season 2[]


Season 5[]

Season 8[]

Video Games[]

Ben 10[]

Alien Force[]

Ultimate Alien[]

Video Games[]

Ben 10: Protector of Earth[]

Zs'Skayr appears as the main antagonist in the Midwest. He frees Vilgax from the Null Void and teams up with him to get revenge on Ben. He also possesses Hex and tries to use his powers to bring an army of his minions from the Anur System but is stopped by Ben. He leaves Hex and then attacks Ben in Chicago. Ben manages to defeat him and then sends him into the Null Void with the help of Grandpa Max.

Ben 10 Alien Force: Vilgax Attacks[]

After Max sends the team to Anur Phaetos to retrieve the Energy core hidden there, the group quickly discovers that Anur Phaetos isn't a planet in the technical sense but in fact a type of alternate dimension. Verdona arrives and uses her powers to send the group to Anur Phaetos, accidentally splitting them up in the process.

Once there, Ben is lured into a fight with Zs'Skayr, who is revealed to be alive, in a sense. This doesn't stop Ben from defeating Zs'Skayr using his one weakness, light. Afterwards, Professor Paradox arrives and gets the group out of Anur Phaetos.

Ben 10: Galactic Racing[]

He is a playable character in the game.

Naming and Translations[]

Language Name Origin
Bulgarian Зъ Скеър From the original English name
French Spectral
From spectre
From effray, scared
German Zs'Skayr From the original English name
Hebrew רוח פחד From רוח, ghost and פחד, fear
Hungarian Szellem From szellem, ghost
Polish Cyber Duch
De Szrama
From cyber and duch, ghost
From de szrama, the scar
Portuguese (Br) Zs'Skayr From the original English name
Romanian Sinistrul From sinistrul, sinister
Russian Зескер From the original English name
Spanish (HA) El'Terhor
Pronounced as /'el te'ɾor/
Pronounced as /'el te'ror/
From El terror, the terror
Turkish Zs'Skayr From the original English name


Zs'Skayr's name is a corruption of the word "scary". The way it is pronounced is similar to saying "the scare."


  • Zs'Skayr's real name was first conceived during the Original Series[pop-up 10][3] but was never used on-screen until Rad Monster Party. Before then, characters only referred to him as "Ghostfreak" (which he made no effort to correct).
    • However, in From Hedorium to Eternity, he is referred to as Zs'Skayr by Ben and his team. This is an error, along with other errors in the episode like Zs'Skayr having his hood and his head in an upright orientation, both of which should be seen only after Rad Monster Party chronologically.
  • Zs'Skayr is able to crack his head either upside down or right side up, even without physically touching it,[15] and is able to move his skin to make a hood. He also indicated in Rad Monster Party that it is more comfortable for him when his head is right-side up.
  • Zs'Skayr is a living being; the Ectonurite concept of "life" is just very different from most sentient life forms.[DJW 18]
  • Zs'Skayr finds Zs'iza and Zs'oise annoying since they just like to play tricks on him and haunt Z'Castle Zs'Skayr.[DJW 19]
  • Zs'Skayr was named by Tramm Wigzell.[DJW 20]
  • Dave Johnson designed both Zs'Skayr and Ghostfreak.[DJ 1] Zs'Skayr's head being upside down was used to justify Ghostfreak's eye placement while wearing his outermost layer of skin.[AC 1]
    • Zs'Skayr's head was turned rightside up in Omniverse because Derrick J. Wyatt never understood the upside down head.[DJW 21] He expanded on this, saying that he always wanted to because it is how he displayed his figures of the character.[DJW 22]
  • Zs'Skayr is the first alien to leave the Omnitrix/Ultimatrix, followed by the escaped aliens from Vengeance of Vilgax: Part 2, and then by the Sentient Ultimate Aliens.


  1. Ghostfreak's page was created on August 11, 2007, by a user named Ghostfreak. This earliest revision made indirect mention of Zs'Skayr's form being "sun-weakened" and without "protective skin". Thus, Ectonurites had been, for the longest time, portrayed on the wiki as only weak to sunlight when without their outermost layer of skin. However, both pop-up trivia and Ben and Zs'Skayr's dialogue in Ghostfreaked Out corroborate that it is explicitly Zs'Skayr's merging with the first wielder of the Omnitrix, and benefiting from their DNA, that would have allowed him to "become whole" and surpass his vulnerability to sunlight.[1][pop-up 9][3] It is inferred from this that the Omnitrix is ultimately what keeps Ghostfreak from being hurt by the sun.[16]


Crew Statements[]

Dave Johnson[]

Derrick J. Wyatt[]

Dwayne McDuffie[]


Audio Commentary[]


See Also[]

Prime Timeline
Vilgax Bioid (Original)Bioid (Omnitrix Army)MechadroidSquid MonsterUltimate Vilgax
Dr. Animo Mutant FrogMutant HamsterMutant ParrotLiving MammothLiving TyrannosaurusHeatbatMutant SeagullMutant OctopusMutant Lepidopterran/Splixson HybridMutant BatMutant Prairie DogMutant HornetPterodactylPterodactyl LeaderMutant KangarooMutant SnailMutant AntMutant MosquitoMutant GiraffeTechnobugChupacabraFrankencryptidMutant Squirrel
Bounty Hunters SixSixSevenSevenEightEightSynthroidSunderKraabVulkanus
Zombozo Acid BreathFrightwigThumbskullZombie Clowns
Rojo's Gang RojoAzulAmarillo
Magic AddwaityaCharmcasterDarkstarPallorfangScrutin
Forever Knights Sir DriscollEnochPatrickUrienSir CyrusJoseph ChadwickConnorSir DagonetDr. JekyllSir MortonSir ReginaldTwin KnightsSquireCoach FinnMech DragonRed KnightSquires
Great One Enforcer AlienInterpreter AlienLeader Alien
Zs'Skayr CrüjoKuphuluLord TransylMummyViktorWerewolfAnur-Mirrored BenAnur-Mirrored CharmcasterAnur-Mirrored HobbleAnur-Mirrored RookLiving Pumpkins
Vengers Billy BillionsCaptain NemesisKangaroo KommandoMazumaSimonsWill Harangue
Lenopan Mr. MannMrs. MannCamille's Ex-BoyfriendMann Family's Bodyguard
Road Crew Baron HighwayTurbineRoad Rage
Evil Bens EonAlbedoBad BenBenzarroEon's ServantsMad BenNega Ben
Highbreed Highbreed CommanderDNAlienEdnaMoeShemMizaruXenocite
Incursean Empire MilleousAtteaRaffMajor GlorffLieutenant RanaSangfroidWay Bads
Vreedles MaPaOctagonRhomboidParallelogramIsosceles Right TriangleDodecahedronPretty Boy
The Hive Elena ValadisMicrochipDecoy QueenLiving BuildingsShip-It Employee
Aggregor AggrebotsUltimate Aggregor
Dagon LucubraConduit EdwardsRichEsoterica
Faction Dr. PsychobosKhyberKhyber's PanuncianMalware
Psyphon Bug-LiteBouncerBubble HelmetLiamGorvanPsyphon's MinionNightmarish AlienPiscciss Volann PrisonerPickaxe AliensSweet-Eels SparklefunkHooded AlienThunderpigTummyhead
Fistrick CorvoHoodlumFistrick's Thug
Rooters ServantisPhil BillingsRagnarokSwiftLeander
Robots B.L.R.R.T.S.A.M.Slix VigmaSlix Vigma's BodyguardsRed RobotComputronComputron's MinionsOttoTechadon RobotsMechaneerNaljian DestructorR.E.D.sMouse MinionsStalkerRemoteJungle Guardians
Others AntonioBenevelonBlue LeaderBuzzCharles ZenithClancyCodon Stream MonsterConvictMayor ColemanCollectimusLord DoomicusDuaneFrankPrince GyulaHammerHowell WainwrightHulex ColonelHulex WorkersInspector 13JackJarettJonah MelvilleKolarCaptain KorkKrakkenKundoLepidopterran PrisonerLiving MushroomsMaltruantMino-TogaMissyMorggMutant SeagullsMyceliumNyancy ChanPiscciss KrakenPinkyPlant AlienPlant ClonesPoltroonPrisoner 775Red LeaderSeebikSimianSolid PluggSsserpentSubliminoSuemungousaurSunnySurgeonTetramand PrisonerTrash MonsterTrombipulorViolet OffendersKing XarionYetta
Alternate Dimensions/Timelines
Original Future Timeline Dr. AnimoExo-SkullKevin LevinMot SnikrepSplootVilgaxVulkanus
Omniverse Future Timeline Dr. AnimoExo-SkullSubdora
Time Heals Timeline CharmcasterHex
Dimension 23 Carrot MonsterOrange Offenders
Mad Ben's Dimension Mad Pakmar
Gwen 10 (What-If?) Vilgax
Goodbye and Good Riddance (What-If?) VilgaxBird Villains
Books AnimusAztakCaeciliaDJ ZenutDr. DoomFrostbyteGontuGroombahInfinite MonkeyLouie the HairdresserParasiteScornSeñor ChaosSlezakThe Collector (Collectible Heroes)The Collector (Powerless)Trash Monster (Down in the Dumps)Triple Trouble
Games Crystal ClawsFeralineForever NinjaFusion BenGiant Vilgax DestroyerMacerootRemoteSnakeflyPlant MonsterTerracotta ArmyTerracotta GeneralTerracotta DragonThornhoundVulpin Serpent
Non-Ben 10
Generator Rex AlphaBlack KnightBiowulfI-BolSkalamander
The Secret Saturdays V.V. ArgostMunya