

Or for a more detailed version of the story, Doom has a simple plot its background is given in the instruction manual, and the in-game story advances mainly through short messages displayed between the game's episodes. He continued fighting the horde on Earth, before taking the fight to Hell once more. After having fought demonic hordes through Phobos, Deimos and Hell, he returned home to find Earth overrun by demons and his wife, child, and pet rabbit Daisy, among the billions of people killed, giving him further reason to pursue hunting the demons. The Marine soon found himself trying to prevent the demons of Hell from invading Earth. The Doom Marine was originally a human from Earth who served in the Marines and was dishonorably discharged due to assaulting his commanding officer after refusing to fire upon a crowd of unarmed civilians, and was later transferred to the UAC Phobos base as security. When asked directly on Twitter, John Romero replied humorously that his name really is Doom Guy (with a space, in two words - first word for name and second for surname). The developers have originally stated that the protagonist has no canon name because he is a representation of the player. The Doom Slayer's Blazkowicz ancestry may or may not be canonical for the modern iteration.


Some fan-theories say the Doom Slayer's name could be William Joseph "B.J." Blazkowicz III but according to official interviews the developers clearly stated he has no name. According to Tom Hall and John Romero (who worked on the original Doom), the original iteration of the DOOM Marine was the grandson of Commander Keen and the great-great-grandson of William J. He is intended to be the latest iteration and continuation of the classic DOOM Marine who is the protagonist for most of the series. This nickname is mentioned in Doom Eternal and used in his dialogue subtitles. Before the character had any epithets in the story, he was most commonly called Doomguy in the fan community. The UAC refers to the Doom Slayer as DOOM Marine, or The Slayer. The demons of Hell first gave him the appellation "Doom Slayer" and also refer to him as the Unchained Predator, the Beast, and the Hellwalker. He has also guest starred in the Quake games such as Quake Champions and Quake III Arena. The Doom Slayer is the protagonist and playable character of Doom, Doom II: Hell on Earth, Final Doom, Doom 64, Doom (2016) and Doom Eternal. Doom Slayer as seen in the recent DOOM ETERNAL game
