Demoness Sharon is a very minor Demon, almost as low as a demon. She was once the lover of Demon Pluto and Demoness Eris. During a wager between Pluto and Eris, she was supposed to get mundane astronomers to discover the planet Eris first, however, she lead them to discover Pluto first. This caused Eris to lose the wager and get locked away in a cavern below Castle Roogna. She did it because Pluto had promised to marry her. He did not keep his promise, though she still worked for him. Sharon is the sister of Demon Charon.