Mephisto vs. Kubik

Is the heart of Mephisto strong enough to win against something that can write its own contract?

Mephisto stands ZERO chance, in or out of his realm. You can even pile on dozens of more demon lords and they would still get crushed by Kubik.

Kubik 10/10.

Mephisto allowed the Celestials. He’d find a momentum that is like the fourth face of L.T. Breaking opposition is what he does.

Kubik wins but he's easily one of the worst characters to use in vs fights. His power is all over the place as far as I know

Mephisto had a son Blackheart though about generations so that himself can focus full power on the origins war.

To be fair Blackheart got beat at his own shot.