The GRIMATAUR is a failed genmutation of a human. He's out of control 'caus he has the ability to teleport himself. The scene is placed in an old castle where he settled down to hide himself.
EDIT: The tail is hidden by the legs and you may can see a bit of a scaly texture (shoulders)... maybe, but it's supposed to be there :)
I tried my best on this piece but I'm not that good in humans. I'm happy how it turned out; yes there are parts that could be better or I should add more background but nevermind... I'm happy :)