Ultimate Diamondhead is evolved Petrosapien from the planet of Petropia. Ultimate Diamondhead also appears in Ambrose 10: Hero Generation.
Appearance[]
In Ben 10: Ultimate Alien (Fan-Made), his head is similar to Rocks'. He is now too galactic black. The crystal is similar to Alien X, and his voice is similar to Four Arms and Ultimate Swampfire. His spike top of his foot is similar to Water Hazard.
Powers and Abilites[]
- Chromastone's powers
- Rocks' powers.
Appearences[]
Ben 10: Ultimate Alien (Fan-Made)[]
- The Peerment
- Negative Ben Returns
- The Revenge Of Vilgax
- Restaurant Of The Dead