This is an AU where the Wrath ring has a Sin. Alastor signed a contract with a Sin to gain his otherworldly power, which threw away his free will aswell. Her name is Aeshma. (stolen from the Zoroastrianism's demon of "wrath") Her concept is a vampire bat, her sin power is attaining energy through blood, and her venom can stun her victims. she survives off blood, she'll die w/o it like a normal vampire bat, her venom is orange in color like her magic and such. also if you're interested in what Alastor was to say before he was cut off "I don't believe the contract specified me to kill for you." And the contract specified he bends over to her will, so whoopsies on his part. she's so temperamental because she was running low. she's bad but this is worse

Alastor picked up most of his violent behavior from her, his dealmaking, and the thing he has with Husk. his coping mechanism is having some sense of power over others, that he lacks. that's why he signed the contract in the first place, because of his abuse while he was alive. he was willing to do whatever it took to have that.

Her ref sheet is in the workings!!!