Sibyline is a character from He-Man and the Masters of the Universe.
Sibyline is a beautiful sorceress from the Isle of Tears, notorious throughout Eternia for her evildoing. Years ago, Sibyline helped Gorgon overthrow Danton, King of the Isle of Tears; now, tired of serving Gorgon, she offers to help the Heroic Warriors depose her evil master and restore Danton's kingdom. Despite her reputation for wickedness, only Orko questions Sibyline's motives; all the other heroes greet her with implicit trust. (So who do you think learns to eat their words?)
Sibyline has long, deep red hair. She wears an outfit which resembles a white-on-blue one-piece bathing suit, with golden bracelets and a matching headband.