Ammit was a notorious Ennead worshipped by Arthur Harrow. Infamous for judging and punishing people before they could even commit any evil, Ammit was imprisoned by Khonshu and her fellow Ennead. Being liberated by Harrow, Ammit was confronted by Khonshu, Moon Knight and Layla El-Faouly. After they imprisoned Ammit inside Harrow's body, they both were killed by Jake Lockley, under Khonshu's orders.
Ammit is dedicated to exterminating evil in the world, however she takes this to extremes, willing to kill anyone whom she believes is destined to commit evil. This brings her into conflict with Khoshu, despite the moon god's own brutal ideas of justice, as Khonshu (though manipulative) believes in free will. Ironically, despite her near-omniscient ability to view into the hearts and souls of mortals and her proclaimed ability to see the past, present, and future, Ammit seems to have a limited view of the world around her. She could not comprehend why Khonshu would fight her, both because of their similarities and because she thought him "destined to lose." Additionally, her comments on denying evildoers "the satisfaction" of committing their crimes, suggests she sees her victims in a simplistic light, unwilling to admit to how complex Humans are. She does not seem interested in any remorse criminals may feel, only choosing to spare Arthur Harrow because he was useful rather than because of his regret.While she seems inflexible, Ammit is willing to change her approach if it serves her purpose. Despite her expressed desire to kill evildoers before they actually commit their crimes, she decided to make the actually guilty Arthur Harrow her avatar as she viewed him as a more loyal than Alexander the Great. Likewise, she went from condescending towards Khonshu to begging when Marc and Layla began the ritual to seal her away.
Ammit is arrogant, self-assured of her strength and her vision. She is unwilling to listen to any arguments that contradict her worldview. However, she may not be totally without mercy, as she repeatedly offered her old enemy Khonshu the chance to join forces with her, though this may have been a ploy.