Etain was originally a sun goddess in Irish mythology. She was the second wife of Midir of the Tuatha De Danann. Midir's first wife Fuamnach turns her into a butterfly out of jealousy. She is later swallowed and reborn.
Known as Erdin in the game. She can perform the Wind Combo Hurricane with Neo Gef that damages foes for 25 MP. She has the power WindWall, which reflects wind based attacks.