awesome design and great use of colour. One crit though, the right hand is looking a bit flat because the fingers aren't casting a shadow on the hand which should be getting some direct light. Anyway, brilliant illustration, i like it alot.
Bright colors like that are common in odd tale characters, wearing black or dark red is something you see on posters for Twilight. I like these kind of designs because you can't say "Hey! He took that other dudes idea!" Imagine if you really saw this guy dressed like that and weren't scared as you stated, but then he gives reason to be scared and catches you off guard. It's the retarded colors and calm atmosphere that make him scary if you think about what he's doing or why's he's there. Not trying to be aggressive, just please be more detailed with your critics, just saying "Not scary enough. And pink jacket is ridicoulous" doesn't help the artist see what you are not fond of.