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Rock is a humanoid rock-bodied alien who is unlocked by Zack 10 on the episode Protector.He is one of the many aliens Zack unlock's in that episode.

Appearance
He looks like a humanoid creature made of grey rock.Has yellow eyes.He has the Ultimatrix symbol on his chest.

Powers

 * Superhuman strength (he is Zack's sixth strongest alien form)
 * Invulnerability
 * Limited-regeneration

Appearances

 * Protector  (1st appearance)

Creation by
User:Smallvilleantonio