My oc Camellia, she was a human possessed by a spirit that now hides in her hair; transforming the top of her head into a ravenous maw, and also a few other transformations like her ears and eyes.(She was a adopted design made by Acidicdoll on Deviantart)

With the possession Camellia also obtained various powers and skills, like the spirit can release swarms of razor sharp butterflies from their mouth to shred incoming threats to ribbons. Also the spirit can take control of her body for a time and give Camellia an attack/speed boost, it does result in her being put in a coma-like state as well as a stamina drain making her pretty exhausted after they release control over her.

The spirit in question is pretty private about much of who they are (Honestly they actually don't have any memory of their past life before becoming a spiritual entity.) but they did let Camellia in on their name; Lamia, no no she's not a Naga/snake person but just shares their name, I have already made up a true form design of them but haven't posted it on here yet.