Check it out. The super neat tumblr stash of Strawberry Tabasco has a set of Ian Miller drawings of various creepy dudes. Also everything else here is fantastic, and much of it appears to be curated from their own collection. For a similar fantasy flavor, there also is a set of monstrous drawings from John Blanche. Dig in those complete archives here.
Masterful and probably ink and graphite smudged artist Ian Miller has a website with a decades of artwork to look at.