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Four Arms
Four Arms POTO Updated.png
General Information
Species Tetramand
Home World Khoros
Body Four-Armed Humanoid
Powers and Abilities
Abilities Enhanced Strength
Enhanced Durability
Enhanced Agility
Enhanced Speed
Enhanced Reflexes
Enhanced Jumping
Enhanced Acrobatics
Wrestling Proficiency
Strong/Sharp Teeth
Sonic Clap
Shock Waves
Earthquake Generation
Wall Climbing
Heat Resistance
Slime Spit (via cold virus)
Voice Actor Richard McGonagle

Four Arms is the Infinimatrix's DNA sample of a Tetramand from the planet Khoros in Ben 10: Protector of the Omniverse. He is the Timeline 1 equivalent of the canon Four Arms.


Four Arms has his Heroes United appearance, but the black stripe on his forehead is longer, going past his eyes. He has more spikes on his arms and his ponytail is now gone.

Transformation Sequence

Ben slams down the Infinimatrix's dial and is engulfed in a green light.

Ben hovers in a dark green background, with light green bubbles pulsating rapidly behind him, as he crouches down. His skeletal structure increases greatly, with him becoming 10 feet tall and more muscular. His skin turns red as his eyes split into four and become fully green, changing shape. The hair on his head disappears and a stripe grows in between his eyes and on his chin. His ring and pinky fingers merge into one as two more arms grow above his waist. Gold cuffs form around his wrists, along with fingerless gloves on his hands. Spikes grow on his arms. His clothes disappear and two sashes appear on his torso, starting from his shoulders and cross in an 'X' shape. The Infinimatrix symbol pops out of his chest. Four Arms spreads his arms and flexes his muscles, completing the transformation.

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. Technically speaking, Four Arms is physically stronger than Methanosians and Vaxasaurians at base size.

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. He even develops to two sharp fangs between his lower jaws as he gets older.

The older Four Arms grows, the stronger he becomes.

Four Arms can create strong shockwaves by clapping all four of his hands together. Ben learned this ability from Tini.

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.

Four Arms can climb up walls by pushing his fingers into them to make hand holds.

Four Arms has a high level of enhanced durability due to his tough and thorny skin.

In correlation to his durable skin, Four Arms is highly resistant to fire, such as that generated by a Pyronite. His skin also makes him laser-proof.

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


Four Arms' bulk can sometimes become a disadvantage, as all the extra muscle mass makes him relatively slower than other opponents and his immense size makes him an easy target for enemy attacks.

Four Arms' size can make moving through areas designed for small species difficult.

Four Arms can feel pain from electricity, such as those generated by Nosedeenians and Gimlinopithecus.

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.

Four Arms can feel great discomfort while being attacked by a swarm of ants.


Missing Pieces



  • Credit to Echoson for the infobox image and ChromastoneandTabby for the image in the gallery.
  • Four Arms needs twice as much deodorant as a human.


Ben 10: Protector of the Omniverse
Ben Tennyson - Gwen Tennyson - Kevin Levin
Azmuth - Bellicus - Carl Tennyson - Cash Murray - Charlie Grant - Crystal Phoenix - Emily - Frank Tennyson - Galvan Soldiers - Gluto - Jimmy Jones - Jonesy - J.T. - Julie Yamamoto - Kenneth Tennyson - Max Tennyson - Myaxx - Mr. Baumann - Natalie Tennyson - Pakmar - Plumbers (Bromeba - Chortle - Elliot - Fistina - Jerry - Magister Patelliday - Magister Prior Gilhil - Maryana Autumn - Morty - Plumbers' Helpers (Alan Albright - Cooper Daniels - Helen Wheels - Manny Armstrong - Pierce Wheels)) - Professor Paradox - Sandra Tennyson - Serena - Ship - Tetrax Shard - Zed
Regular Aliens
Alien X - Ampfibian - Antigravitesla - Arctiguana - Armodrillo - Astrodactyl - Atomix - Ball Weevil - Big Chill - Bob the Blob - Braindrain - Brainstorm - Brute Fource - Bullfrag - Bungee Sponge - Buzzshock - Cannonbolt - Chamalien - Chromastone - Clockwork - Construx - Crashhopper - Diamondhead - Ditto - Domino - Eatle - Echo Echo - Embiggensect - Evomania - Eye Guy - Fasttrack - Four Arms - Frankenstrike - Funguy - Ghostfreak - Glitch - Goop - Gravattack - Grey Matter - Gurge - Gutrot - Heatblast - Heavysplitter - Hippopotamass - Humungousaur - Jetray - Juryrigg - Kickin Hawk - Lodestar - Mealymouth - Mimisthetic - Mind Games - Mole-Stache - Nanomech - NRG - Octolord - Overflow - Pesky Dust - Plantapocalypse - Porquillpine - Porturtle - Purebred - Rath - Retouch - Ripjaws - Rock Bottom - Sandbox - Shocksquatch - Slow Hands - Snakepit - Snare-oh - Snark Tanque - Soulcatcher - Sparkhenge - Spidermonkey - Spitter - Squidstrictor - Stinkfly - Swampfire - Terraspin - Terrorsaur - Thriller Whale - Timbrewolf - Toepick - Upchuck - Upgrade - Venomsnake - Vine-al Warning - Water Hazard - Way Big - Whampire - Wildmutt - Wildvine - Wolf Calendar DS - XLR8
Ultimate Forms
Ultimate Arctiguana - Ultimate Big Chill - Ultimate Cannonbolt - Ultimate Echo Echo - Ultimate Goop - Ultimate Gravattack - Ultimate Humungousaur - Ultimate Rath - Ultimate Spidermonkey - Ultimate Swampfire - Ultimate Way Big - Ultimate Wildmutt
Season 1

Season 2

Season 3

Season 4

Season 5

Season 0
Azmuth's Invention - Wrath of the Xenocytes - The Trouble With Doubles - Escape From the Infinimatrix - Bait - Fusing Some Enemy Butt - Factorial Doom - Wrath of Vilgax - A Trip To...Nowhere - To The Past - Clown Catastrophe - Forever Stealing - Rumors and Lies - Summer Again - Truce - Ultimate Escape - Hero's Challenge - Controlled - Ben-Blank: Protectors of the Omnigizer - Prom Not To Be - Doom Date - Behind the Mask - Quest to Conquer - When Things Are Altered - Play It Back Again - Ben 10: Fall of the Omniverse - Surprise Visit - The Chronian Invasion - Aggression

Related Pages
Anur System - Earth-50