MLP Daybreaker as Queen Chrysalis

Daybreaker is a supporting antagonist in the My Little Pony: Friendship is Magic series, appearing as the main antagonist of the Season 7 television episode A Royal Problem, and again in the comic series as the secondary antagonist of the Nightmare Knights saga. She is depicted as the evil alter-ego of Princess Celestia, the same as Nightmare Moon being the alter-ego of Princess Luna.