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Big guy? Red face? Four arms? Never heard of 'im.

Upgrade to Azmuth's Father, while the latter was hunting Four Arms.[1]

Tetramands[2][3] are an alien species from the desert planet Khoros.[merch 1]


Tetramands are a buff and bulky species. Most Tetramands are red, but blue and brown ones have been seen. Tetramands have spikes on their arms, and sometimes on their heads. They have two front toes on each foot. Tetramands appear to have an additional set of smaller pectoral muscles below their primary set to help move their second set of arms. Each one of their four hands has three fingers and a thumb. They also have four eyes.

Female Tetramands have hair.[pop-up 1][4][5] Male Tetramands have hair that turns gray as they get older, but most of them lack hair.

Younger Tetramands are skinnier than adults and have disproportionately larger eyes and heads.[6]

Tetramands have an average height of 10 feet[merch 2] and can grow to be as tall as 15 feet high. Female Tetramands are usually taller than the males.[pop-up 2][7]


Tetramands are a warrior race. Generally speaking, they are fairly aggressive and favor violence.

By nature, Tetramands are extremely emotional creatures, just like Humans.[pop-up 3][8]

Because female Tetramands are traditionally stronger than males, they are in turn considered the better warriors, and due to this, if a male Tetramand manages to defeat a female Tetramand, the male becomes the female's chosen husband.[9]

As a Tetramandian custom, the bride collects four items before a wedding: "Something conquered, something bruised, something severed, and something blue."[10]

Tetramands are not very amicable towards outsiders, as in the case of Kevin when he went to get one of their Tetramand Engine Blocks for his car. Initially, he was refused, until he agreed to marry Princess Looma in three years, after which he was allowed to have the Engine Block.[9]

Tetramands are very strict in the upholding of their laws; an offender whose crime was merely jumping the turnstiles at an auto show was buried up to his neck in sand.[11]

Tetramands are not big on exceptions, even to other law enforcement officers like the Plumbers.[12][11]

Tetramands have a unique way to ultimately decide court cases; fight. Tetramands get to fight with their accusers in a battle arena and the winner of the Tetramand Trial of Combat wins the case. There is nothing in the rules that states that the person must stay a Tetramand.[13][14]

Tetramands are a spacefaring race that are a part of galactic society. They may either settle on any number of worlds and raise a family or live their lives on starships that rarely return home to Khoros, if ever.[DJW 1]

Tetramands live in very close knit family tribes and defend their kin to the death.[merch 3]

Powers and Abilities[]

A Tetramand's most prominent ability is their enhanced strength, being able to lift several times their own weight and punch through various resilient materials with ease. Technically speaking, Tetramands are physically stronger than Methanosians and Vaxasaurians at base size.[DM 1]

A Tetramand's strength allows them to use anything heavy as a weapon, from big rocks they can throw several feet away, to metal beams and pillars that can be used as clubs. Their great strength even extends to their jaws and bites, allowing them to bite metal and damage it.[15]

The older a Tetrmand grows, the stronger they become.[16] 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 generally stronger than their male counterparts.[17][9]

By slamming their fists on the ground, Tetramands can create shock waves[18] and cause pillars of rock to erupt.[19] They can also make strong shock waves by clapping all four of their hands together.[7][19][20]

Tetramands have a high level of enhanced durability due to their tough and thorny skin,[pop-up 4][7] as Four Arms was able to casually take missiles from a Mechadroid[21] and a slash to the chest from Malware while barely feeling any pain.[22] In correlation to their durable skin, Tetramands are highly resistant to fire and intense heat, such as that generated by a Pyronite.[23]

Tetramands can jump several times their own height, at least seven stories up, in a single bound.[24][18][25]

Tetramands have enhanced reflexes, as Four Arms was able to catch and redirect missiles[1] in a single motion.[3]

Tetramands are immune to extremely cold temperatures, demonstrated when Four Arms fought Dr. Animo's yeti on top of a snowy mountain,[26] and when he was able to survive on Mikd'lty.[27]

Tetramands are also resistant to strong winds, such as those generated by a Geochelone Aerios.[28]

Tetramands can climb up walls by pushing their fingers into them to make hand holds.[29]

When infected with a cold, Tetramands can sneeze out sprays of slimy snot from his mouth, and although disgusting, this can be useful against insects.[30]


A Tetramand's bulk can sometimes become a disadvantage, as their immense size makes him an easy target for enemy attacks. A Tetramand's size can make moving through areas designed for small species difficult.[31][32]

Tetramands can feel tremendous pain from electricity, such as that generated by Galvanic Mechamorphs[33] and Gimlinopithecus.[20][9]

Tetramands can become drowsy from sedative quills.[34]

Tetramands can be trapped in bandages generated by Thep Khufans, as demonstrated by Looma.[35]

If under the effects of a cold, a Tetramand's strength and stamina are severely reduced.[30]


Tetramands make the toughest and most durable engines in the galaxy.[11]

Tetramands are shown to have a far more advanced civilization than humans.

Notable Tetramands[]

Notable Mutant Tetramands[]

Notable Tetramand Hybrids[]

Non-Canon Tetramands[]


Tetramand is made of two Greek words "tetra", meaning four, and "mand" meaning arms. Thus, it literally means Four Arms.

Naming and Translations[]

Language Name Origin
Spanish (HA) Tetramand
Cuatrobrazos (Ben 10: Destroy All Aliens)
Diamante (Ben 10: Destroy All Aliens)
Tetramandiano, Tetradiano (Catfight)
Tetramano (Universe vs. Tennyson, Rook Tales and Fight at the Museum)
Tretamandiano (Let's Do the Time War Again and Malgax Attacks)
From the original English name;pronounced as /tɛtra'mand/ (The Galactic Enforcers and Ben 10: Omniverse until OTTO Motives) and as /'tɛtramand/ in (OTTO Motives).
From cuatro, four and brazos, arms; dub error (Tetramands are referred by Four Arms's Latin American name).
From diamante, diamond; dub error (Tetramands and Tetrax have Diamondhead's Latin American name in Ben 10: Destroy All Aliens).
Tetramandiano, Tetradiano and Tetramano are variatons of Tetramand; pronounced /tɛtraman'dɪano/, /tɛtra'dɪano/ and /tɛtra'mano/ respectively.
Tretamandiano is mentioned due an unknown dub error.




Crew Statements[]

Dwayne McDuffie[]

Matt Wayne[]

Derrick J. Wyatt[]


Sapient Species AcrosianAerophibianAmperiAnoditeAppoplexianAquarianArachnichimpArburian PelarotaAtrocianBiot-savartianCelestialsapienCerebrocrustaceanChimera Sui GenerisChronosapienChurlCitrakayahConductoidContumeliaCrystalsapienDetroviteDracosianDragonEctonuriteFloraunaGalileanGalvanGalvanic MechamorphGeochelone AeriosGimlinopithecusGourmandHighbreedHulexHuman (Osmosian)IckthyperambuloidIncurseanKineceleranKraahoLenopanLepidopterranLewodanLimaxLoboanLucubraMaxatomarMerlinisapienMethanosianNecrofriggianNemuinaNosedeenianOpticoidOrishanOrmerowonOrthopterranOryctiniPantophagePetrosapienPiscciss PremannPiscciss VolannPlanchakülePolar ManzardillPolymorphProtostPrypiatosian-APrypiatosian-BPugnavorePyroniteRevonnahganderSegmentasapienSlime-BiotSonorosianSotoraggianSphoeroidSplixsonSylonnoidSynthroidTalpaedanTetramandThalassianThep KhufanTo'kustarTransylianUxoriteVaxasaurianVladatVreedleVulpimancerYetiZaroffian
Unnamed Sapient Species Argit'sAstrodactyl'sAtomix'sBall Weevil'sDagger AliensDecka'sEnforcer Alien'sGutrot'sHobble'sInspector 13'sKickin Hawk'sMedic'sMole-Stache'sPakmar'sPickaxe AliensProbity'sRock MonstersSmoothie Vendor'sTack'sTentacle Vendor'sTiny'sToepick'sVulpinic Tortugan
Evolved Sapient Species Evolved AppoplexianEvolved ArachnichimpEvolved Arburian PelarotaEvolved GalileanEvolved GalvanEvolved HumanEvolved MethanosianEvolved NecrofriggianEvolved Polar ManzardillEvolved SonorosianEvolved To'kustarEvolved VaxasaurianEvolved Vulpimancer
Non-Sapient Species Aldebaran BeidafangAnubian BaskurrBuglizardCassiopeian Dream EaterChupacabraCorrupturaCrabdozerDasypodidaeDravekGracklflintHavoc BeastKaosseffexx UltimasauriaKrakkenMammothMicrochipMuroidMycetian Swamp HoppersNight MareNull GuardianOmnivoraciousPallorfangPanuncianPsycholeopterranPterodactylPyroxovoreQuartilloptusRoot SharkSandripperScreegitScrutinSlammoidTime BeastsTyrannosaurus RexVicetopusVolaticus biopsisWigzelian Org BeastXenociteZombie Clown Virus
Unnamed Non-Sapient Species Alien VerminKhoros Reptilian MountLiving MushroomsLiving PumpkinsMucilator'sPiscciss KrakenRobotic Squid AlienSquid MonsterTerroranchula's
Evolved Non-Sapient Species Evolved Panuncian
Non-Canon Sapient Species BasaltCephalod-aeChronianHumpbackusLaurianSool and Gontu's
Non-Canon Non-Sapient Species Cyber SquidMacerootSnap DragonThornhoundVulpin Serpent