Enya is an all powerful goddess who wants to play with Mikes mind, simply because he's friends with Jebidiah.
She wants to recreate the world with her as the only entity around so everyone can worship her. However, she sees Mike as an obstacle due to the legend of "The Bearded One" that she read in ancient times about how a man with a large body and a big beard will save Earth.
Despite her god-like power, people comment how she dresses so little and she thinks she dresses just fine... until Winter hits and she gets colds a lot.