Ace

Ace is a boy who came from a medallion discovered by Dr. Tatsunoko and his daughter Asari. With his flying silver ring used as an aircraft and a weapon, he is able to go on missions in order to protect Earth from threatening alien invaders. SPACE ACE was a young boy. Only his face was visible when he was in his uniform. He had ear-caps and an asymmetrical ‘v’ perched on his forehead like a sort of lightning-bolt emblem. He was of course an alien, and was given to homesick stargazing with the faces of his loved ones ghosted across the heavens. Chubby Ace’s tool of preference was the Galaxy Ring, a flat white hoop that he could produce from his fingers to be thrown (á la Oddjob’s bowler hat) or ridden on (á la Monkey’s cloud). He was also very strong and a very good fighter as well. -ANN and http://anime.wikia.com/wiki/SpaceAce/SpaceAce