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Four Arms is the Omnitrix's DNA sample of a Tetramand from the planet Khoros.


Ben as Four Arms

Four Arms is a humanoid alien that is approximately twelve feet tall, has well-developed muscles, two pairs of four-fingered arms, and red skin. A black stripe goes from his chin to his lower lip, and he has four eyes: a main pair, and a smaller pair below them.

In the original series, Four Arms wore a white T-shirt with a black line going down it, black pants, and fingerless gloves. He wore the Omnitrix symbol on his upper left shoulder. His eyes were yellow and he had no hair.

In Ultimate Alien, Four Arms wore gold wrist and ankle bands, a pair of black underwear that has a gold waistband, as well as two golden sashes that went across his chest. His eyes were green, he had a black ponytail, and he wore the Ultimatrix symbol on his chest.

10-year-old Ben as Four Arms in Ultimate Alien looks exactly the same as his appearance in the Original Series, except his Omnitrix symbol is green instead of white.

In Heroes United, Four Arms, in addition to his clothes in Ultimate Alien, wore pants, fingerless gloves, and had tattoo-like stripes on his body, which were the same as the stripes of his shirt in original, giving him his original series look.

In Omniverse, Four Arms now has three short spikes on the top of his head, a mustache like design, and the black stripe on the top of his head is gone. He has no hair, he has a black tank top-like shirt with one large green stripe in the middle, and black pants. He has a belt, where the Omnitrix symbol is located. He also has fingerless gloves like in the original series, with green cuffs at the wrist of his gloves. His skin is also lighter than it was in Ultimate Alien.

11-year-old Ben's Four Arms in Omniverse looks the same as the original series, but now has green eyes and the Omnitrix symbol on his shoulder is now green. In both his 11-year-old and 16-year-old incarnations, Four Arms now appears to have a second set of pectorals for his other set of arms.

Kevin as Four Arms

Four Arms looks as he does in the original series, but with paler skin and no Omnitrix symbol.

Ben 10,000 as Four Arms

Four Arms had a better-developed forehead, more muscle mass, a different T-shirt design and a pair of jutting incisors. Four Arms wore the Omnitrix symbol on his chest.

Gwen as Four Arms

Four Arms had darker skin, hair and clothes based on Gwen's, and lacked the vertical black stripe sported by Ben's version. Just like Ben, Gwen wore the Omnitrix symbol on her upper left shoulder.

Alpha as Four Arms

Four Arms looked roughly similar to Kevin's Tetramand mutation, only he had four arms rather than six. He had four red eyes, black hair, and black shorts. He wore a red fake Ultimatrix on his chest, and there were red lines spread across his body.

Powers and Abilities

Four Arms' most prominent ability is his enhanced strength, being able to lift several times his own weight and punch through various resilient materials with ease. Since Four Arms is one of Ben's strongest aliens in the original series, he relies on him the most when fighting large foes.

Four Arms' strength allows him to use anything heavy as a weapon, from big rocks he can throw several feet away, to beams and pillars that can be used as clubs. His great strength even extends to his jaws and bite, allowing him to bite metal and damage it.

The older Four Arms grows, the stronger he becomes.[1] By age 16, Four Arms has become strong to the point where he was able to overpower Looma Red Wind, the princess of Khoros, despite female Tetramands being stronger than their male counterparts.[2][3]

Four Arms can create strong shockwaves by clapping all four of his hands together.[4] Ben learned this ability from Tini.[pop-up 1][5]

Four Arms can alternatively create shockwaves by slamming his fists on the ground.

Four Arms can jump several times his own height, at least seven stories up, in a single bound.[6]

Four Arms has high durability due to his tough and thorny skin[pop-up 2][5], being almost fire and laser-proof.

Being from Khoros, Four Arms is also highly resistant to heat.


Sick Four Arms

Sick Four Arms

Four Arms' bulk sometimes is a disadvantage; all the extra muscle mass makes him relatively slower than other opponents, and his size, likewise, makes using things, or moving through areas designed for smaller species, difficult. He appeared to lack this weakness in Ultimate Alien, as he was noticeably slimmer and less bulky. His immense size also makes him an easy target for enemy attacks.

If under the effects of a cold, Four Arms' strength and stamina are severely reduced, his skin turns from bright red to a dark shade of orange, and he develops pungent hives in his armpits. He could also sneeze out sprays of slimy snot from his mouth, and although disgusting, this can be useful against insects.[7]


Gwen 10
  • In Gwen 10, Four Arms was used to play bowling.
Ben 10,000

16-year-old Ben
10-year-old Ben

11-year-old Ben
16-year-old Ben


Video Games

  • Four Arms in Protector of Earth
  • Four Arms in Cosmic Destruction
  • Four Arms in Galactic Racing
  • 16 year old Four Arms in Ben 10: Omniverse
  • 11 year old Four Arms in Ben 10: Omniverse
  • Four Arms in Omniverse 2
  • Four Arms in Punch Time Explosion XL
  • Four Arms Exosuit in Project Exonaut

Ben 10

  • Four Arms is a playable alien in the game.

Ben 10: Protector of Earth

  • Four Arms is one of the first aliens available. He also has unlockable Dark Heroes and DNA Force skin. His special attack (which involves throwing a rock at his opponent) is the most powerful out of all the other playable characters in the game.

Powers and Abilities

  • Four Arms' prominent ability is his enhanced strength. Four Arms is able to spin to punch multiple enemies.
  • Four Arms can scale certain walls.
  • By punching the ground, Four Arms can launch rocks in all directions. By clapping all his hands together, Four Arms can create an energy beam.

Ben 10 Ultimate Alien: Cosmic Destruction

  • Four Arms is an exclusive character for the PS3, much like Rath is exclusive for the Xbox 360. Both have super strength as their main power.

Ben 10: Galactic Racing

  • Four Arms is a playable racer in the game.

Ben 10: Omniverse

  • Four Arms is a playable alien in the game (by both 11-year-old and 16-year-old Ben).

Ben 10: Omniverse 2

  • Four Arms is a playable alien in the game.

Punch Time Explosion XL

  • Four Arms is the "Punch Time Explosion" attack and "Synergy Attacks" for Young Ben.

Project Exonaut

  • Four Arms is a playable Exosuit of the Atlas Brigade on Project Exonaut. His Weapon Mod increases the speed of the Ballista. Fourarms is available for purchase at level 30 for 2000 coins.

Naming and Translations

Language Name Origin
Albanian 2 herë 2 From 2 herë 2, meaning 2 times 2.
Arabic فور ارمز From ارمز, arms, and فور, four
Bulgarian Четириръкия From Четириръкия, four-armed
Chinese 四手霸王 From 四手 (Sì Shǒu), four arms, and 霸王 (Bà Wáng), overlord
Croatian Rukati "The one with many arms"
Dutch Quatre-Bras From quatre, four, and bras, arm
French Quad From the Latin prefix quad, four
German Die Krake From krake, squid
Greek Τέσσερα Χέρια From Τέσσερα, four, and Χέρια, arms
Hebrew ארבע זרועות From ארבע, four, and זרועות, arms
Hungarian Csupakar From csupa, many, and kar, arm
Indonesian Lengan Empat From lengan, arm, and empat, four
Italian 2 x 2 From Due per due, two times two
Japanese フォーアームズ From フォーアー (fōā), four and ムズ (muzu), arms
Korean 슈퍼파워 From 슈퍼파워, superpower
Polish Czteroręki From cztery, four, and ręce, hands
Portuguese (Br) Quatro Braços From quatro, four, and braços, arms
Romanian Patru braţe From patru, four, and braţe, arms
Russian Силач/Четырёхрукий From Силач, strong man
From четырёхрукий, four-armed
Serbian Четвороруки (Četvororuki) From четири (četiri), four, and руке (ruke), arms
Spanish (HA) Cuatrobrazos
Cuatro Brazos
From cuatro, four, and brazos, arms.
Spanish (Spain) Cuatrobrazos From cuatro, four, and brazos, arms
Swedish Fyr-Arm From Fyra, four, and Arm, arms
Turkish Dört Kol From Dört, four, and Kol, arm


Four Arms' name is a play on the word "forearms", a part of the body, in unison with the bicep responsible for punching and lifting strength.


  • According to the audio commentary for the episode Ghostfreaked Out, Four Arms' transformation sequence was the first one to be designed.[AC 1]
  • Four Arms needs twice as much deodorant as a human.[AC 1]
  • In Goodbye and Good Riddance, a kid at Ben's school called Four Arms "Quad Hands", until Ben corrected him.
  • Four Arms is the first alien used by 11-year-old Ben in Omniverse.
  • Four Arms is replaced by Gutrot in the opening intro of Omniverse's Arc 5.
  • In Cartoon Network's online game FusionFall, Four Arms has a nano made after him.
  • Four Arms' Ultimate Alien appearance is similar to Kintaro and Goro from Mortal Kombat. His Four Arms along with his belt and black briefs resemble the Fighting Pokemon Machamp 
  • In MAD, Four Arms was the first alien transformed into by Benjamin Franklin. He was colored purple, had his original clothes, the original Omnitrix symbol and Ben Franklin's hair and sleeve cuffs.



Audio Commentary

See Also

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
Ultimate Aliens Ultimate AlbedoUltimate ArctiguanaUltimate Big ChillUltimate CannonboltUltimate Echo EchoUltimate GravattackUltimate HumungousaurUltimate RathUltimate SpidermonkeyUltimate SwampfireUltimate Way BigUltimate Wildmutt
Fusion Aliens Atomic-XBig ChuckCrashockerDiamond MatterFourmungousaurHeat JawsHumungoopsaurStink ArmsUprigg
Unseen Aliens Decagon VreedleRocksSquidstrictorVentrilosquid
Future Aliens SandboxShellheadSnakepit
Retconned Eon
Non-Canon PortalerAntigraviteslaBob the BlobPlantapocalypseThriller Whale

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