Uh have yinz seen lord beerus in action? all you gotta do is take away his favorite food and he'll blow up the planet. I love Sebastian because he's a crow demon and is virtually unstoppable. loki himself is the god of mischief and uses illusions and tricks to get the upper hand. bizarro..well bizarro is bizarro. so honestly it's between lord beerus, who is a god of destruction, and Sebastian who is lucifers third son. id even wager loki against beerus for a short time until both either grew bored or withdrew for less trivial matters.