Oh, wow, he looks smart, but there's something cruel about his mouth as if he's unscrupulous when it comes to using his intelligence. If he was a Muggle scientist, he'd be the type who wouldn't mind testing on animals, me thinks.
With his hairdo he seems to fit in the right era as well and it looks entirely plausible that a young Dumbledore would fall for this homme fatal. :)
Wonderful work!