Gorgon Sisters

The  are a group of three teenage Gorgons who have been sent by Vampira from greek mythology to Arco Iris to destroy the Star Teens. Stheno is the oldest of the group, at 16. Euryale is 15 years old. Medusa is the youngest, at 14. Stheno is voiced by Kath Souci, Euryale by Tara Strong, and Medusa by Grey Delisle Griffin.

Appearance and Wardrobe
All three sisters have light green skin, yellow eyes with dark green irises like vipers, sharp pointed teeth like vampires, sharp pointed bronze fingernails, long slimy forked tongues, leathery dragon wings, and green mambas for hair. They mostly wear dresses inspired by actual clothes of ancient Greece (such as togas), sandals, bronze bracelets, and other similar accessories.

Powers
They turn anyone who looks into their eyes into stone.