Raised in one of the few "sanctuaries" in Hell, the Rookery was a hidden, safe place to be compared to the more gruesome inner areas of Hell. Demi was raised there, so she never experienced the cruelty that almost all demons possess. Thus her personality is charming and naïve.

After a Demon army attacked the Rookery, Demi escaped and found the pyramid of Kit-Ra, a banished cat goddess. Kit-Ra took Demi in and she has lived there ever since. She regularly uses Kit-Ra’s mystical transport mirrors to visit other worlds and times outside of Hell.