Someone was nice enough to send me a essage when they saw a beware on facebook, regarding art thieft. They knew the piece was mine and then sent me a message on facebook, letting me know that someone has claimed on of my art pieces as their own, claiming the character that's in the piece.

I'm mostly worried, since the character they have claimed isn't mine. It could become really messy if they are getting art of the character, etc.
Whilst if they had just been going "Looks I mades it" I would have been able to laugh at it, but I feel what they are doing is even worse. Since it's the art that I drew, but the character doesn't belong to me.

As far as I know, this is the first for me so I'm just mostly surprised by this.
This isn't a beware by any means, just more of a rant. I've told the person who owns the character what has happened, but from what I see the best I can do is just wait and keep an eye out on what's happening.