The alien is probably one he unlocks in a later story arc, I heard a bit of his voice, and I think David Kaye voices him. He has Goku's way to charge his energy-induced powers, and by the look of his build, has enhanced strength. He could be Atomix, but that is just a rumor, if he was, the alien would be the second future alien mentioned by Ben 10,000 that has a physical appearance, and abilities. The first was Toepick, and his name was only mentioned in Ken 10, Kenneth Tennyson remarked that he grosses him out, probably because of his body, and Kenny probably saw his face. His physical appearance was in Special Delivery, where he scared Psyphon into submission.