This is Murdock the demon from the book project I'm working on - Teeney O'Feeney King of the Leprechauns. It's a kids book so I didn't want Murdock getting too scary or nasty. In the story he is motivated by a desire to do the right thing.
I had the same caveat with my publisher when illustrating the chief bad guy. It took 4 or 5 attempts before I got a version that wasn't too scary This little guy is a masterpiece. Just the right amount of scariness with the furrowed brows, pointy teeth and pointy nails.