|Affiliations|| Vilgax (Formerly)|
|Powers and Abilities|
Diamond Weapon Manifestation
|Voice Actor||Dave Fennoy|
|First Appearance||Hunted (BBO)|
Tetrax's body looks similar to Diamondhead's, due to them being the same species, but he wears a black suit that covers most of his body.
Tetrax is a battle-hardened bounty hunter with a strong desire to do what is right. This is partly due to his involvement in the destruction of his home planet, Petropia.
Tetrax claims that he used to be a being who cared about no one but himself and that is what led him to become a mercenary. It was only after Vilgax destroyed Petropia that he realized the effect his actions had on his own people.
Tetrax first appeared in Hunted (BBO). He was sent by Azmuth to assess Bryce's use with the Infinity, and hired by Vilgax to take it. He let Bryce keep it, after helping him defeat the other two bounty hunters.
In The Darkest Night: Part One, Tetrax briefly appeared before the end of the episode.
- Tetrax does not appear to have four spikes on his back like Diamondhead.
- Tetrax was the first alien shown in the series to be the same species as an Omnitrix alien.