BelieveBeOK
Superstar
Look up what superman did when he lost control in the injustice comics.
Breh slammed a damn invincible guardian of the universe into a planet powered by a huge green lantern ring, while taking on a full blast of energy from that planet and killed them both. And he did this with ease and without any harm done to him at all.
He killed captain marvel instantly with heat ray.
He can technically kill anyone with heat ray vision from across the damn galaxy (yes he can pin point someones exact location from across the galaxy)
Breh is literally more powerful and any character from dc and marvel. His only weakness is that he's pretty dumb sometimes and always believes in a fair fight, like goku.
Batman would have none of those weaknesses.
Batman doesn't kill though, whereas the Z fighters, for the most part, don't stop until somebody dies