This eldritch, otherworldly being simply known amongst humans as Agatha is a servant of The Trinity, and by extension, the Skullgirl who disguises herself as a simple, if tall and curvy nun. Most of the time, her eyes will remain shut. She is usually stoic but will feign a polite and kind persona to hide her disturbing and manipulative character. Thanks to her shapeshifting powers, she can swallow others whole and absorb them if she so desires.