Sentry or Hyperion
I would think sentry wins. Because he has a healing and he also has a combo shield which means his combo meter is not reset when struck. When he has enough hits his special attack 1 and 2 can be unblockable. Hyperion doesn’t have a healing factor. But Hyperion is physically stronger than sentry. He uses power gain which can increase his his special attack meters. And he’s also a better fighter than sentry. With the help of Void on sentry’s side I think he can beat Hyperion. In the comics sentry is immortal and Hyperion isn’t.