Karpin wears a blue long sleeved shirt with black buttons, and purple pants. He also wears dark blue shoes, and small round glasses, and has black hair and a beard.
Karpin gives the following puzzles in Professor Layton and the Azran Legacy:
"Karpin is a fishmonger whose unique patter nets him as many sales as the excellent quality of his produce. The Kodh locals know better than to talk to him about anything water related, since once he gets going, there's no stopping him. Little do they know that he's just as passionate about meat."