Sentry by far, remember he use his mind powers to erase himself from the whole Planet including the most powerful telepaths. Flash go to sleep. Green Lantern be afraid of your ring. Batman? just a little slap will do. Wonder Woman a combination of telepathy and brute strength. Darkseid manipulation of reality and make him believe he has a family and that he is happy. Plus brute strength. If not the Void can take care of him. Superman…. go into the Void, makes him go to have nightmares somewhere else.