Stheno and Eurayle are Medusa's triplet sisters. Unlike her, they have hair. Their parents favor Stheno and Eurayle over Medusa, due to them being born first and immortal. They both can't stand Medusa's snakes and get freaked out by them. They also are not very nice, while Medusa is nice. They also get a bigger allowance than her and a care 📦 from their parents quite often. Stheno and Euryale also call Medusa "Dusa".