The Medusa Harmony was the Gorgon from the episode "The Golden Fleas". Her real counterpart is Harmony.
Medusa was a purple snake-like gorgon with snake hairs, very much like a typical gorgon. She has yellow-white eyes with green pupils and grey skin. Upon defeat, the character gets dark grey skin.
- Medusa had the same voice as Dinah from The Land Before Time because of Sandy Fox.