Years ago, Sibyline helped Gorgon overthrow Danton, King of the Isle of Tears. Sibyline's goodness shows through, when she realized her mistake in 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. Together He-Man and the Heroic Warriors help Silyline restore King Danton to his rightful place on the throne of the Isle Of Tears.
- Sibyline is voiced by Linda Gary, in the Filmation cartoons.
MOTU Filmation Cartoon Appearances: