Regina as the Evil Queen of The Enchanted Forest
Evil Queen, the evil persona of Regina Mills, is one of the primary villains of Once Upon A Time, serving as the main antagonist of the first season of the show, a secondary antagonist in the second season, the tertiary antagonist in the first half of fourth season and the future secondary antagonist of the first half of season 6.
In the finale of season 5, Regina used Dr. Jekyll's separation formula to get rid of The Evil Queen persona of hers, just like how Jekyll got rid of Mr. Hyde. She thought she killed the Evil Queen persona, but in reality she survived and sworn revenge upon Storybrooke. Her former identity in the fairy tale world is Snow White's evil stepmother.
She is portrayed by actress Lana Parrilla.