Opal Luna Saturnyne is the name of a fictional comic book character created by Dave Thorpe and Alan Davis for their Captain Britain stories. She is the Omniversal Majestrix of Otherworld, and a servant of Roma, charged with the safety of the Omniverse. Her first appearance was in Marvel Superheroes, #381 playing a major part in Alan Moore and Alan Davis' Jaspers' Warp storyline. She later had a recurring role in the pages of Excalibur.