Rusk was born as a natural werewolf in a community where people worshiped all nature gods: Silvanus, Chauntea, Malar, and Eldath. For many years, he was welcomed among both humans and wolves, gaining a reputation as a ranger in the Dalelands and Sembia.
Rusk later became a hunter of renown. He was hired by Vilsek Malveen of Selgaunt as a guide. Soon he gathered followers and started arguing with Maleva, who wanted him to convert to Selùne's faith. Breaking with Maleva Rusk, he instead joined the People of the Black Blood.
Rusk feared he would no longer be the chosen vessel of Malar, and even that he might never have been. He feared he had himself created the individual that would become the new champion of Malar.