Question: is doomguy and doom slayer the same person?
Answer: The codex entries and cutscenes in DOOM Eternal bridge the rebooted series (DOOM 2016 and DOOM Eternal) to the original series and confirm that, yes, the Doomguy, aka Doom Marine, is definitely the same person as the Doom Slayer. ... Here's how the Doomguy became the Doom Slayer.