Once an ordinary woman, Hag was given mystical abilities by Deathwatch. She, along with her associate Troll, have an unyielding appetite for the lifeforce of human beings.
Deathwatch first called upon Hag and Troll to aid him in his battle against Ghost Rider. Though Deathwatch did not survive the encounter, Hag and Troll did, and they worked their best to return him to the Deathspawn and bring him back to life.
While working to restore Deathwatch's life, Hag and Troll were confronted by Venom, who witnessed the pair feasting on the innocent. They later battled Ghost Rider again, along with Johnny Blaze and Spider-Man. Hag and Troll also attempted to feed Spider-Man's enemies Hobgoblin, Demogoblin, and Doppleganger to the Deathspawn. They were eventually defeated and given over to Doctor Strange.
However this plan was shattered when Centurious attacked the Spirits of Vengeance and kidnapped Hag and Troll. Deathwatch was altered by Carver, but it is not known what happened to Hag and Troll.
Hag is able to mesmerize her victims into submission, distracting them while she tears into their hearts and feasts on their life essences.