John Prosky is an American film, theatre, and television actor. His numerous TV credits include NYPD Blue, ER, Heroes, Criminal Minds, True Blood, JAG, My So-Called Life, Star Trek: Deep Space Nine, The Practice, The X-Files, The West Wing, Charmed, 24, House, Grey's Anatomy, Veronica Mars, and Fringe. His film credits include The Nutty Professor, Bowfinger, and A.I. Artificial Intelligence. He also contributed voice work to the L.A. Noire video game. He is the son of actor Robert Prosky.