Vincent "Vince" Masuka (Masuoka in the books) is a fictional character in the Showtime television series Dexter and the novels by Jeff Lindsay upon which it is based. In the television series he is portrayed by Korean-AmericanC. S. Lee. Masuka is the Miami Metro Police lead forensics investigator and works alongside Dexter Morgan in the lab and in crime scenes. He often cracks innuendo to the rest of the team, invokes his Japanese heritage only when convenient, and harbors decidedly unrequited feelings for Debra.