Nemesis the Warlock is a comic series created by writer Pat Mills and artist Kevin O'Neill which appeared in the pages of the British weekly comics anthology 2000 AD. The title character, a fire-breathing demonic alien, fights against the fanatical Torquemada, Grand Master of the Terran Empire in Earth's distant future, and his attempts to exterminate all alien life.

Patrick Eamon Mills is an English comics writer and editor who, along with John Wagner, revitalised British boys' comics in the 1970s, and has remained a leading light in British comics ever since. He has been called "the godfather of British comics".