The man in the helmet in our fanart game cursor is the main character of several Doom games, including Doom, Doom II: Hell on Earth, Doom 64, DOOM 2016, and Doom Eternal. Other names Doom Slayer goes by include Unchained Predator, the Beast, and the Hellwalker. The character is considered a modern version of the classic DOOM Marine, the main character in earlier games. Initially, he was a human who served in the Marines on Earth but was discharged dishonorably for refusing to fire on unarmed civilians and then assaulting his commanding officer.