Thulsa Doom is a
fictional character first appearing in the
Kull short story "Delcardes' Cat" by
Robert E. Howard. He has since appeared in comic books and film as the nemesis of Kull and, later, one of Howard's other creations,
Conan the Barbarian. Thulsa Doom is the prototype for many of the future undead evil wizards, such as Tsotha-Lanti (in the
Conan saga) and Kathulos (in the Skull Face novelette); other living or revenant Howardian practitioners of magic such as
Thoth Amon, Thugra Khotan,
Kathulos and
Xaltotun bear some psychological similitudes to Thulsa Doom even if their outward appearance is vastly different.