Power is the blood fiend, she can be a bit rude, but she is nice when u get to know her, she is friends with Denji and Aki, Denji can turn into chainsaw man, and Aki can summon demon foxes to eat devils, she is working as a devil hunter for Makima the Control fiend, a fiend is a devil who possess the dead body of a human, she thinks she is the strongest but she is afraid of the darkness devil (like everyone)