A combination of a leech inspired mouth and cthulhu head.

You can find the non background version http://www.redbubble.com/people/pawgyle/works/22279272-cthulhu-leech
and the background version http://www.redbubble.com/people/pawgyle/works/22279342-cthulhu-leech-with-background
on my redbubble store!