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This article is about the canon version of Shellhead. You might have been looking for Tom Perkins' version of Shellhead.
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Shellhead is the Omnitrix's DNA sample of an unknown race from an unknown planet. He is a future alien exclusive to Ben 10,000 and Ken.


Shellhead resembles a giant turtle.[1][2]

Powers and Abilities

Shellhead has the ability to hide in his shell when feeling threatened.[1][2]


Naming and Translations

Language Name Origin
French La Carapace From carapace, shell
Italian Shellhead From the original English name
Portuguese (Br) Couraça From couraça, armor made of metal or leather
Russian Голова-Панцирь From голова, head and панцирь, shell
Spanish (HA) Shellhead From the original English name
Turkish Kabuk Kafa
From kabuk, shell and kafa, head
From the original English name


  • Ken was greatly disappointed when he heard he had Shellhead in his Omnitrix.[2]
  • Tom Perkins designed his own version of Shellhead in 2020 from concept ideas he had during the show's run. He does not know if the writers came up with any idea what the unseen future aliens would do, as all they had at the time were the names of the aliens.[TP 1]
  • Unlike with Toepick and Atomix, the crew did not consider incorporating Shellhead into Omniverse.[MW 1][DJW 2] Had he made it into the show, he would have likely not been much different from Tom's design.[DJW 3]
  • There were no plans to expand on Shellhead in the reboot, but it is possible the crew will expand on him in the future.[DR 1]


Derrick J. Wyatt

Tom Perkins

Matt Wayne

Duncan Rouleau

Introduced in Ben 10 ArctiguanaBlitzwolferBuzzshockCannonboltDiamondheadDittoEye GuyFour ArmsFrankenstrikeGhostfreakGrey MatterHeatblastRipjawsSnare-ohSpitterStinkflyUpchuckUpgradeWay BigWildmuttWildvineXLR8
Introduced in Alien Force Alien XBig ChillBrainstormChromastoneEcho EchoGoopHumungousaurJetrayLodestarNanomechRathSpidermonkeySwampfire
Introduced in Ultimate Alien AmpfibianArmodrilloChamalienClockworkEatleFasttrackJuryriggNRGShocksquatchTerraspinWater Hazard
Introduced in Omniverse AstrodactylAtomixBall WeevilBloxxBullfragCrashhopperFeedbackGravattackGutrotKickin HawkMole-StachePesky DustThe WorstToepickWalkatroutWhampire
Future Aliens SandboxShellheadSnakepit
Ultimate Aliens AlbedoArctiguanaBig ChillCannonboltEcho EchoGravattackHumungousaurRathSpidermonkeySwampfireWay BigWildmutt
Fusion Aliens Atomic-XBig ChuckCrashockerDiamond MatterFourmungousaurHeat JawsHumungoopsaurStink ArmsUprigg
Concept Fusion Aliens GravadactylXLRG
Other Aliens in Official Media AntigraviteslaBob the BlobCartoon Network AlienEon (Retconned)MoyoInvinciblePlantapocalypsePortalerRocksShadowmanSquidstrictorStretcheleo