You are known as The Doom Slayer, one day you fight your way through demons to get to a mechanical individual named Dr. Samuel Hayden who at the time is broken. Then a demon invades the facility and a red portal appears… and out emerged… A female marauder? She reaches out her battle-axe, activates it. She’s wearing some sort of gladiator armor with more modern features.

Marauder: “You were nothing but a usurper, a false idol! My eyes have been opened… let me help you to see, Slayer…”