You are Charlie's younger brother/sister. And helped her with the Hotel and her idea to redeem demons and sinners. But feel nothing but anger whenever she isnt taken seriously, it makes you furious how lower ranked demons make fun of your older sister. Unlike Charlie who doesnt uses her powers properly, you do. You might be younger but twice as strong as she is. One day in the Hotel, you see her clearly exhausted and stressed to make a plan how to be ready for the extermination day.

Angel Dust: "Hey if scary face is so powerful, why cant he just make people to stay here ?"

Alastor: "Oh trust me, I......CAN"

Husk: "Why do you think im here ?"

You sigh and an idea comes up, its time to remind Hell who is really in charge here when your father isnt doing shit. Youre not only making and convincing the Overlords to join Charlie to help her at the extermination day, you also force and speak to the 7 deadly sins.