Ultimate Akuma

Ultimate Akuma is Akuma in a very powerful mode. He can do special attacks in an ultimate way. He's the final boss of the game Street Fighters vs Ben 10 (UA).

Story
In the game, Akuma met Vilgax and Akuma said ,"You look like more of a fool and the like".Vilgax replied,"(evil laughter)your could be useful for my robbery."What robbery"? Akuma replied. Vilgax replied,"To get my get my shape into the Lucabra's powers"! Akuma and Vilgax worked together to stop Ryu and Ben Tennyson.Vilgax put Akuma in a machine to get so much power.Until then Akuma hadn't change so Vilgax had made a clone of him and Akuma fought his clone.Akuma's clone had lost and Vilgax had built some cyborg parts on the clone.