It's the generic pose with a hat, and that oft-used 3/4 face for character profiles. I specifically chose this character out of the other lovely young men from Diabolik Lovers (which I had in turn chosen because I'd just happened to check it out/been aware of recently) because he seems to most obviously physically embody the spirit of <profanity>-ness common in popular media - the fancy hat to go with an exasperating personality, the fur-lined coat (fur seems to be commonly associated with villainous characters), and of course, that smarmy grin begging for a fist.