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Bashmouth is the AntiTrix's DNA sample of an unknown species from an unknown planet.


Bashmouth's appearance is based on a werewolf. He has blue-ish grey and cream colored fur, with three sharp claws on each hand and foot. The inside of his mouth is red. He wears a dark orange and red armored vest, black pants, black gauntlets, and a iron shoulder pad on his right shoulder.

Bashmouth has the AntiTrix symbol in the center of his vest.

Powers and Abilities

Template:PartStubBashmouth's signature ability is his ability to generate metal from various parts of his body. Two known examples of this include generating scaled armor plates from his forearms and sharp metal teeth that retracts over his normal teeth. This armor is dense enough to harm Four Arms.

Bashmouth's metal teeth that can crunch through concrete, and is strong and agile enough to easily handle Four Arms in direct hand-to-hand combat.


Bashmouth is similar to Rath, in the sense that his instincts can take over. The carnivorous aspect of his werewolf physiology means if he notices anything about meat, he'll divert his attention to it's consumption rather than a fight.


  • Bashmouth first appeared in Introducing Kevin 11, where he battled Four Arms.


Ben 10

Season 3

  • Introducing Kevin 11 (first appearance)
  • Roundabout, Part 1


  • Bashmouth's name is a reference to the popular band Smash Mouth.


  • Bashmouth is the first and so far only one of Kevin's aliens that Ben has never had access to.
Kevin's Aliens
Regular Aliens
BashmouthBootlegCrystal FistDark MatterHot ShotQuad SmackRushSkunkmothThornbladeUndertowWreckingbolt
Fusion Aliens
Monster Kevin
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