The Shadow King is one of the more powerful mutant telepaths in the world, and has used mental bolts and probes, as well as a powerful psi-screen. He also manipulated the astral plane, being an expert fighter while in astral form. Since his physical death, he existed entirely as an astral creature but he could also possess or subliminally control a physical body, even using the host's psionic powers if any. He could also use his powers to cure physical injuries on his host body. He is said to be immortal and feed on hatred and violence.