Purthiel the Bunny Slasher is an OC originally created by JaygentOfChaos_, with artist ThatDawgMurray is part-owner. He is depicted as a feminine male black humanoid with a white bunny mask.

According to ThatDawgMurray, his true identity is a Ukrainian college student called Purfylo Hasdrubalenko. Years before he discovered the bunny mask, Purfylo was jealous of people with curvy figures and wanted one himself because he was often picked on for his rather slender body. At night he would often have wet dreams where he felt his butt and thighs growing and tearing his jogging bottoms, only to wake up with a feeling of disappointment as usual.

One day, just as he thought he was sure he would never get the curves he wanted, he found the bunny mask in an abandoned thrift store with a note that said “he who wears this mask shall have everything he desires” or something like that. Thinking it meant exactly what he thought, he eagerly put the mask on, and sure enough, his wish was fulfilled! As soon as his entire body was encased in the black inky substance the mask somehow emitted, he felt his waist contract and his hips and thighs grow to spectacular proportions, and as soon as the transformation was complete, he looked down at his newly developed ass, gave it a good hard spank and felt great pleasure from the rather satisfying jiggle it made, even commenting “Bljat’, that's the first time my ass ever did that!”

Today he carries the mask in a backpack everywhere he goes and keeps it in a secret place at home. In his mask-on form, he takes revenge on those who have belittled him in the past with his trademark “sex or death” threats, and even has the ability to expand his assets to whatever size he likes, whenever he likes.