Acting · New York City, New York, USA · Born April 15, 1970
Mark Alexander Knox (born April 15, 1970), better known as Flex Alexander or Flex, is an American actor, comedian and dancer.
MovieUnrequited
2026
as Erik
MovieThe Assistant
2023
as Shawn Fields
TVThe Black Hamptons
2022
as Devon aka Lojack
TVKenan
2021
as Derek
MovieTrigger
2020
as Michael Mass
MovieBallbuster
2020
as Luther
TVmixed-ish
2019
as George
MovieMaybe I'm Fine
2019
as Jeffrey
TVCarl Weber's The Family Business
2018
as Low Jack
TVStation 19
2018
as Evan Forrester
MovieAnd I Danced
2018
as Self
MovieLove by the 10th Date
2017
as Preacher Hill
TVLucifer
2016
as Simon Hallbrooks
MovieSoul Ties
2015
as Jessie
MovieMy Sister's Wedding
2013
as Matthew
TVMasters of Sex
2013
as Walter
Movie24 Hour Love
2013
as Bradford
TVGotham Comedy Live
2012
as Self - Host
TVThe Client List
2012
as The Wolf
TVBlue Bloods
2010
as Demarcus King
MovieThe List
2007
as Chet
MovieThe Hills Have Eyes 2
2007
as Sarge
MoviePoor Boy's Game
2007
as Ossie Paris
MovieSnakes on a Blog
2007
as Self
MovieSnakes on a Plane: Meet the Reptiles
2007
as Self
MovieSnakes on a Set: Behind the Scenes
2007
as Self
MovieThe Snake Pit: On the Set of 'Snakes on a Plane'
2007
as Self
MovieLove and Other Four Letter Words
2007
as Arnold
MovieSnakes on a Plane
2006
as Three G's
MoviePure Venom: The Making of Snakes on a Plane
2006
as Self
MovieHer Minor Thing
2005
as Marty
TVGrey's Anatomy
2005
as Evan Forrester
TVCuts
2005
MovieShira: The Vampire Samurai
2005
as Small Change Willie (as Flex)
MovieMan in the Mirror: The Michael Jackson Story
2004
as Michael Jackson
Sweet Oranges
2004
as Himself
MovieGas
2004
as Damien
TVOn Air with Ryan Seacrest
2004
as Celebrity Courtyard Correspondent
TVCSI: Miami
2002
as Beau Lendell
MovieOut Cold
2001
as Anthony
TVOne on One
2001
as Flex Washington
TVGirlfriends
2000
as Darnell Wilkes
MovieSanta and Pete
1999
as Pete
MovieThe Apartment Complex
1999
TVThe Parkers
1999
MovieShe's All That
1999
as Kadeem
MovieModern Vampires
1998
as Trigger
MovieIce
1998
as Kelvin
TVTotal Security
1997
TVBrooklyn South
1997
as Buster
MovieThe 6th Man
1997
as Jerrod Smith
MovieCity of Industry
1997
as A Roc
TVHomeboys in Outer Space
1996
as Tyberius Walker
TVMoesha
1996
as Dread
MovieMoney Train
1995
as Hood
TVNew York Undercover
1994
TVSister, Sister
1994
as Cold Dog
TVWhere I Live
1993
MovieJuice
1992
as Contest Auditioner
