Keith Diamond

Keith Diamond (born Vincent Keith Ford Jr. on March 26, 1962) is an American former actor. He is especially known for his roles as Agent J on Men In Black: The Series and as recurring character Greg Clemens on The Drew Carey Show.

Over his career, Diamond has appeared in guest spots on numerous television series, including The Cosby Show, Charmed, Martin, ER, and LAX. He also guest-starred in Criminal Minds in the episode, "Plain Sight" as Detective Cornelius Martin who aids the BAU in capturing a serial rapist/murderer named the '"Tommy Killer".