She’s not listed on IMDB, but was listed in the closing credits of the show.
Everyone liked the first season, and, near as I can tell, four seasons are tied for second worst, with season two (Michelle Forbes/the maenad) as the worst. 
The Fairy Elder served as a disposable Worf. She showed up, everyone thought she was badass, she messed up Reverend Redshirt, and then Russell ended her. How can they hope to stop Russell if the Fairy Badass can’t do it?
Fairy Badass had terrible musical taste. I’d be crazy too if I had those kind of musical questions always on my mind.