On a road trip with his cousin Gwen and his Grandpa Max, Ben finds an alien watch, the Omnitrix, which allows him to transform into 10 different aliens. Once transformed, Ben takes on the alien’s appearance and powers, while always remaining a ten year old boy. The result…the ultimate kid superhero! Diamondhead can transform his body into diamond weapons such as swords and shields. He can also fire crystal shards from his hands and resist attacks with his sturdy crystal chest. Guess diamonds really are the hardest substance in the universe!