|Powers and Abilities|
|Voice Actor||Dee Bradley Baker|
|First Appearance||Highbreed Invaded: Part 2|
|Evolved Form/Devolved Form||Diamondhead|
Ultimate Diamondhead is an evolved Petrosapien from the planet Petropia in Ben 10: Omnitrix Unlimited.
He looks like Omniverse Diamondhead, but he is taller, buffer, his 'skin' is silver like steel, his shards are longer and sharper and he has two small ones on his chest.
Powers and Abilities
He is 10 times stronger than Diamondhead. He can create weapons from his hands and he is immune to sonic attacks.
Beings with greater strength can overpower him.
- Ultimate Diamondhead first appeared in Highbreed Invaded: Part 2,
- Ultimate Diamondhead fought Vilgax.
- Highbreed Invaded: Part 2 (first appearance)