Clyde is capable of reality manipulation on a massive scale. He is immortal and can open portals to other dimensions/realities, time travel, resurrect the dead, manipulate matter, shapeshift, teleport, generate massive amounts of energy, project telepathic illusions, and mind control high-level cosmic entities. He is also highly durable as it took planck temperature to defeat him after he was severely weakened from fighting. The Marquis of Death is a future incarnation of Clyde Wyncham from a parallel universe where he escaped his imprisonment from Area-87 and had his mind fully restored following an attack led by several incredibly powerful supervillains, all of whom he killed with but a thought. Another future version of Clyde is the Doctor Doom of The Old Man Logan timeline.