Rintrah

Rintrah is a green-skinned, minotaur-like alien from the planet R'Vaal who became an apprentice to Doctor Strange after a chance encounter brought him into the sorcerer's world. Possessing a genius intellect, he proved a remarkably swift student of the mystic arts.

Few characters make an entrance quite like Rintrah — debuting in Strange Tales #1 in 1987, this Copper Age Marvel creation from writer Peter Gillis and artist Chris Warner arrived in the mystical corners of the Marvel Universe and never quite left. Over nearly four decades of appearances across Doctor Strange, Sorcerer Supreme, Strange Tales, and even The Infinity Gauntlet, Rintrah has kept extraordinary company — sharing pages with Wong, Clea Strange, Thor, and Sara Wolfe — placing him squarely at the heart of Marvel's supernatural storytelling. A card-carrying member of the Defenders, with at least one collector-significant key issue to his name, Rintrah is the kind of deep-cut character that rewards the curious fan willing to dig into the stranger, more enchanting corners of the Marvel cosmos.