Beatrix Ezelbub

Beatrix Ezelbub is the daughter of the Lord of the Flies Beezelbub from Abrahamic folklore.

History
Beatrix grew up alongside the Devil's daughter Lucie Morningstar who she used to be close friends but wound up being turned off by Beatrix's narcisism and occasional cruelty which in turn prompted the two to become adversaries towards one another.

Monster
Beatrix is a fly-demon and the daughter of Beezelbub. Beezelbub is the Lord of the Flies and one of the founding demons of the Realm of the Damned as well as being the second-in-charge of the Realm, second only to the Devil himself.

Romance
Beatrix is in a romantic relationship with Morpheus' son Sanderson Dream who she also grew up with due to his father often travelling to the Underworld with him for business. Lucy also used to have a crush on Sanderson which only Beatrix knew about, and Lucy still resents Beatrix for having taken him even though she knew what he meant to her.