Robert Lyle Knepper is an American actor.


Knepper was born in Fremont, Ohio, but was raised in Maumee. Both of his parents worked as veterinarians. During his childhood, Knepper became interested in acting as his mother was involved at a local community theater. He soon spent most of his youth working in the local community theater and also the high-school productions. Graduating from Maumee High School in 1977, he then attended Northwestern University to study drama. During this time, Knepper also started starring in Chicago plays. Nearing the completion of his degree, Knepper dropped out of Northwestern University and moved to New York City. There, he continued to work in the theater business. Although he never made any plans to work in film and television projects, Knepper began his television and film career in 1986 with The Paper Chase and That's Life!. On August 26, 2011, Knepper and three others were all honored by the Maumee Alumni Association during an awards dinner and also at the opening Maumee High School varsity football game. He eventually married one Tori and had a son named Benjamin with her.


  • That's Life! (1986) as Steve Larwin
  • Tour of Duty (1987) as Racist Soldier
  • Star Trek: The Next Generation (1987) as Wyatt Miller
  • Wild Thing (1987) as Wild Thing
  • The Twilight Zone (1985) as Alonzo
  • D.O.A. (1988) as Nicholas Lang
  • Renegades (1989) as Marino
  • E.A.R.T.H. Force (1990) as Dr. Peter Roland
  • Young Guns II (1990) as Deputy Carlyle
  • Session Man (1991) as Unknown Role
  • Gas Food Lodging (1992) as Dank
  • Red Shoe Diaries (1992) as Nick Willard
  • Doorways (1993) as Thane
  • When the Bough Breaks (1993) as Lt. Jimmy Creedmore
  • Dead Of Night (1996) as Christian
  • Jaded (1996) as Freddy
  • Everyone Says I Love You (1996) as Greg
  • You Are Here (1998) as Unknown Role
  • Phantoms (1998) as Agent Wilson
  • The Stringer (1998) as John
  • ER (1998) as Keith Reynolds
  • Star Trek: Voyager (1998) as Gaul
  • Absence of the Good (1999) as Glenn Dwyer
  • Kidnapped in Paradise (1999) as Renard
  • Harsh Realm (2000) as Mad Priest
  • Seven Days (2000) as Major Gene Hastings
  • La Femme Nikita (2000) as Henry Collins
  • Law & Order: Criminal Intent (2001) as Dr. Peter Kelmer
  • Thieves (2001) as Special Agent Shue
  • Jackie, Ethel, Joan: The Women of Camelot (2001) as Robert F. Kennedy
  • Presidio Med (2002-2003) as Sean
  • Species III (2004) as Dr. Abbot
  • CSI: Miami (2004) as Freddy Coleman
  • Carnivàle (2003-2005) as Tommy Dolan
  • Good Night, and Good Luck (2005) as Don Surine
  • Hostage (2005) as Will Bechler
  • Point Pleasant (2005) as Demon Dance Host
  • Prison Break (2005-2009) as Theodore "T-Bag" Bagwell
  • Hitman (2007) as Yuri Marklov
  • Transporter 3 (2008) as Johnson
  • The Day the Earth Stood Still (2008) as Colonel
  • Heroes (2009-2010) as Samuel Sullivan
  • Burning Daylight (2010) as Elam "Burning Daylight" Harnish
  • Stargate Universe (2010) as Simeon
  • Chase (2010) as Jack Druggan
  • Criminal Minds (2010) as Rhett Walden
  • Shameless US (2010) as Rod
  • Breakout Kings (2011) as Theodore "T-Bag" Bagwell
  • Earth's Final Hours (2011) as John Streich
  • My Way (Cloclo[1]) (2011) as Frank Sinatra
  • Cult (2012) as Roger Reeves
  • Prison Break (2016-present) as Theodore "T-Bag" Bagwell

On Criminal MindsEdit

Knepper portrayed schizophrenic budding serial killer and abductor Rhett Walden in the Season Six episode Reflection of Desire.


  1. French translation

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