Like Polar Boy, Legion rejectee Stone Boy had complete control over his powers. Unlike Polar Boy, Stone Boy's power was almost completely useless. Except for providing a decoy target for really stupid armies.
But don't think I'm an unsympathetic bastard! Naw, I'm a sympathetic bastard! I came up with a more handsome look for the guy, and a better idea on how he can use his powers. See, all he needs to do is go to the top of a steep slope, wait for a bad guy to show up, crouch into a ball, turn into stone, and VOILA!
Tomorrow: Legion Of Substitute Costumes: The Mess!