Hephaistus, Panacea, Ambrosia, Nectare, and Athena are all names from Greek myths. Hephaistus is the god of fire and the forge. Panacea is the goddess of universal health. Ambrosia and nectar are the food and drink of the gods. Athena is the goddess of wisdom.
She is encountered as a boss in the third stage of Crystal Palace.