Thalia is the youngest of Lilith’s spawn, and her only daughter. She introduced the people of Eos to vanity and the worship of physical beauty, promoting those who were blessed with pleasing physical attributes to the status of gods and goddesses.

As the sole female Barathrum, she had unprecedented control over the male population of Gelkspar. Thalia had but to cast a suggestive glance to gain control of anyone she wished - body, mind, and soul. Her promiscuous and illicit relationships with the sons of men infected them and introduced into the human gene pool the seeds of the Chaosikai.

Thalia now lies dormant, as do the remainder of the Barathrum, but her exact resting place is unknown.