I saw you were looking for demons! This probably isn't what you were looking for, but I felt like drawing some good ol' nightmare fuel! Uhhhh.... enjoy!
The concept for this is that this demon using a human disguise up top to trick humans into being comfortable enough to get close to it.
If you are interested, I'd love some sort of water-based demon, preferably something monster-like rather than humanoid. Go wild with it! I just don't want a human face, but any other type of head should be fine. ^^ Note that I'll probably make a feral version of the design.
If using, please credit my toyhouse account Meowdle for the design and art.