Dr. Doom tries to enter The High heavens but Malthael instantly teleports to him and it says he has to pass him to enter in The Great Library. Dr.Doom accepts the challenge and booth fight. Who,ever, can Doctor Doom defeat Te Aspect of Death and Wisdom itself and Malthael....ur... Doctor Doom?
Booth have similar powers. Malthael can deflect ANY kind of attack with the simplest gesture, create entire realms of existence and travel between planes and defeat the strongest of enemies with his voice or make them bow to him.