Karen may refer to:

Mike Messier (born 12/5/82) is an independent filmmaker, actor, theatre and screenwriter and Professional Wrestling historian who was raised in Burke, Virginia, USA and currently resides in Providence, Rhode Island, USA.

Messier is perhaps best known for his acting in the film Hard Luck, which was filmed in 2005, released to video in 2006, and picked up by the USA Network in 2008. In the film, Messier plays Eugene, the mentally challenged son of Cass, a serial killer played by Cybill Shepherd. In addition to a bathroom/bedroom sequence with Shepherd, Messier also shares a fight scenes against Wesley Snipes and director Mario Van Peebles in the climax of the film.

To a cult audience of late night Public-access television cable TV viewers in Rhode Island, Mr. Messier is known as the host/producer of The Mike Messier Show, an outlet for Messier's own short films and animations as well as a "community forum" for other filmmakers, comedians, musicians, and avante garde artists. One episode of The Mike Messier Show in 2005 featured Messier's tribute to The Station Fire, which included interviews with fire survivors and family members. Other memorable episodes included guests The Suicide Girls Burlesque Show (February and July 2004), rock band Skid Row (August 2003), filmmaker Michael Corrente (May 2007) and Ultimate Fighting Championship heavyweight champion Randy Couture (November 2005).