you were an ex-avenger. You were so broken by a death that you became a villain. But you were forgotten ever since you returned back to your home planet in space. You were one of the most powerful beings in the universe

during a battle, the avengers were against the enemy that killed your bsf (the death that made you a villain) and they were loosing, but you were told of the battle and were on your way to destroy this enemy,all of a sudden they felt the ground rumble, not knowing it was you