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Ben 10 Wiki
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Exo-Skull is a cybernetically enhanced human/rhino hybrid from an alternate timeline.[note 1]


Exo-Skull is a humanoid grey rhinoceros with glowing orange eyes, dark grey fingers and toes, and red and black nearly impenetrable armor.



Exo-Skull used to be a human criminal, but he was turned into a human/rhino hybrid and became a member of Dr. Animo's "Interspecies Gang", a group of criminal/animal hybrids.[pop-up 4][5]

Ben 10[]

Exo-Skull first appeared in Ben 10,000, where he mistook Ben as XLR8 for his future self and attacked him, but was soon after easily defeated by the older Ben as XLR8.

Powers and Abilities[]

Exo-Skull is durable enough to withstand being blasted by Gwendolyn using the Kemo Char spell.

Exo-Skull can shoot energy blasts and nets out of his horn.[5]



Ben Tennyson[]

Exo-Skull holds a deep grudge towards Ben 10,000, having fought him before in the past.[5]


Ben 10[]

Season 3[]

Naming and Translations[]

Language Name Origin
Portuguese (Br) Exo-Crânio From crânio, skull


Exo-Skull's name is based on the word exoskeleton, replacing skeleton with skull.



  1. The Ben 10,000 from Omniverse is stated to be Ben Prime's true future self.[DJW 1]
    • This is evidenced in-show by the fact that both the Ben 10,000[1][2] and the future Dr. Animo[3] from Omniverse recalled characters and events from the present day. Chrono-Spanner also frequently visits present day with effects of his actions manifest in his present.[4] This would not be possible if these characters belonged to an alternate timeline.
    It was also stated that the Ben 10,000 from Omniverse is the same character as the Ben 10,000 from the Original Series.[DJW 1][DJW 2][DJW 3]
    • This was due to the crew's preference of the original Ben 10,000 over the Ultimate Alien portrayal,[DJW 3] as well as executives wanting everything to be more like the Original Series.[DJW 2]
    • Derrick J. Wyatt made several statements to corroborate the story, expanding on what is known from the Original Series, such as the backstory for the Biomnitrix invoking the plotline of Ben 10,000,[DJW 4] and the defining tragedy in Ben 10,000's life having now occurred at the age of 20,[DJW 5] "shifted" from the original age of 15.[pop-up 1][5]
    • The writing of the show also indicated this viewpoint, with Ben identifying the future Dr. Animo from Animo Crackers to be the same as the one he encountered in Ben 10,000, and other efforts made throughout the last few seasons to align the story with the future timeline.
    However, the above two statements are inherently contradictory, because the Original Series Ben 10,000 was from an alternate timeline[6][7][pop-up 2][5][pop-up 3][8] in which he never travelled to the future when he was 10, and consequently did not give Max a cake on his 60th birthday, while Ben Prime did.[5] Thus, the Original Series Ben 10,000 did not recall the events of the episode.[7][DM 1][DM 2][DM 3]
    • Derrick responded to the matter by saying: "Your 'plot holes' are irrelevant. Time isn't completely fixed, it's shifting. Events can be subtly altered. But Ben 10,000 is the future for the Ben Prime timeline."[DJW 1] This can be interpreted as a retcon. This wiki, however, considers the two Ben 10,000s, and by extension, the two futures, separate.


Crew Statements[]

Derrick J. Wyatt[]

Dwayne McDuffie[]

Thomas Perkins[]


Prime Timeline
Vilgax Bioid (Original)Bioid (Omnitrix Army)MechadroidSquid MonsterUltimate Vilgax
Dr. Animo Mutant FrogMutant HamsterMutant ParrotLiving MammothLiving TyrannosaurusHeatbatMutant Seagull (Original Series)Mutant 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 DestroyerMacerootRemoteSnakeflySnap DragonTerracotta ArmyTerracotta GeneralTerracotta DragonThornhoundVulpin Serpent
Non-Ben 10
Generator Rex AlphaBlack KnightBiowulfI-BolSkalamander
The Secret Saturdays V.V. ArgostMunya