Possible Clues:

• Greek goddesses of vengeance
• Mythological vengeance deities
• Not angels but angers
• Megaera, Tisiphone, and Alecto, collectively
• This trio were all the rage with a hairy start
• Orestes' tormentors
• Avenging spirits, with "the"
• Trio of myth
• Avenging spirits
• Make sure if the three of them are all the rage