Stella is an owl demon, and a member of the Goetia, the aristocrats that rule over Hell. Stella has a husband named Stolas, and a moody teenage daughter named Octavia. Stella hates Stolas for cheating on her with Blitzo, an Imp, to the point she is willing to have Stolas killed.
She is prideful and snooty, looking down on those she considers to be of a lower social class than her. Stella is also cruel and enjoys abusing those weaker than her.