Flex Alexander

Biography

Mark Alexander Knox (born April 15, 1970), better known as Flex Alexander or Flex, is an American actor, comedian and dancer.

Career Overview

Flex Alexander has 45 screen credits in a career dating back to 1992. Their work spans 3 cinematic universes — most prominently The Hills Have Eyes Reboot with 1 titles. Signature works include The Hills Have Eyes 2, Man in the Mirror: The Michael Jackson Story, Snakes on a Plane. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.

Personal Facts

Known For

Acting

Gender

male

Known Credits

45

Birth Date

1970-04-15 00:00:00

Birth Place

New York City, New York, USA

Known For

• 

  The Hills Have Eyes 2
• 

  Man in the Mirror: The Michael Jackson Story
• 

  Snakes on a Plane
• 

  Unrequited
• 

  And I Danced
• 

  Snakes on a Set: Behind the Scenes

Associated Universes

Universe traveler — spans 3 universes

• The Hills Have Eyes Reboot (1 titles)
• The Hills Have Eyes (Reboot) Collection (1 titles)
• She's All That (1 titles)

Frequent Collaborators

• Samuel L. Jackson (2 collaborations)
• Julianna Margulies (2 collaborations)
• Kenan Thompson (2 collaborations)
• Rachel Blanchard (2 collaborations)
• Keith Dallas (2 collaborations)
• Sunny Mabrey (2 collaborations)
• Lin Shaye (2 collaborations)
• Bobby Cannavale (2 collaborations)
• Michael McMillian (1 collaborations)
• Jessica Stroup (1 collaborations)

Credits

• actors (45 credits)

  • Unrequited

    Erik

    actor

    actors
    2026
  • The Assistant

    Shawn Fields

    actor

    actors
    2023
  • Trigger

    Michael Mass

    actor

    actors
    2020
  • Ballbuster

    Luther

    actor

    actors
    2020
  • Maybe I'm Fine

    Jeffrey

    actor

    actors
    2019
  • And I Danced

    Self

    actor

    actors
    2018
  • Carl Weber's The Family Business

    - My Son, the Thief (2025) ... Low Jack actor actors

    - Welcome to the Family...Not! (2025) ... Low Jack actor actors
    2018
  • Station 19

    - Under the Surface (2018) ... Evan Forrester actor actors
    2018
  • Love by the 10th Date

    Preacher Hill

    actor

    actors
    2017
  • Lucifer

    - Homewrecker (2016) ... Simon Hallbrooks actor actors
    2016
  • Soul Ties

    Jessie

    actor

    actors
    2015
  • My Sister's Wedding

    Matthew

    actor

    actors
    2013
  • 24 Hour Love

    Bradford

    actor

    actors
    2013
  • Masters of Sex

    - Love And Marriage (2013) ... Walter actor actors
    2013
  • The Client List

    - Unanswered Prayers (2013) ... The Wolf actor actors
    2012
  • Blue Bloods

    - Pilot (2010) ... Demarcus King actor actors
    2010
  • The List

    Chet

    actor

    actors
    2007
  • The Hills Have Eyes 2

    Sarge

    actor

    actors
    2007
  • Poor Boy's Game

    Ossie Paris

    actor

    actors
    2007
  • Snakes on a Blog

    Self

    actor

    actors
    2007
  • Snakes on a Set: Behind the Scenes

    Self

    actor

    actors
    2007
  • The Snake Pit: On the Set of 'Snakes on a Plane'

    Self

    actor

    actors
    2007
  • Snakes on a Plane: Meet the Reptiles

    Self

    actor

    actors
    2007
  • Snakes on a Plane

    Three G's

    actor

    actors
    2006
  • Pure Venom: The Making of Snakes on a Plane

    Self

    actor

    actors
    2006
  • Her Minor Thing

    Marty

    actor

    actors
    2005
  • Shira: The Vampire Samurai

    Small Change Willie (as Flex)

    actor

    actors
    2005
  • Grey's Anatomy

    - Momma Knows Best (2018) ... Evan Forrester actor actors
    2005
  • Man in the Mirror: The Michael Jackson Story

    Michael Jackson

    actor

    actors
    2004
  • Sweet Oranges

    Himself

    actor

    actors
    2004
  • Gas

    Damien

    actor

    actors
    2004
  • CSI: Miami

    - Miami, We Have a Problem (2010) ... Beau Lendell actor actors

    - Deep Freeze (2007) ... Beau Lendell actor actors
    2002
  • Out Cold

    Anthony

    actor

    actors
    2001
  • Girlfriends

    - A Kiss Before Lying (2001) ... Darnell Wilkes actor actors

    - Bad Timing (2001) ... Darnell Wilkes actor actors

    - Never a Bridesmaid (2000) ... Darnell Wilkes actor actors

    - Everything Fishy Ain't Fish (2000) ... Darnell Wilkes actor actors

    - The Remains of the Date (2000) ... Darnell Wilkes actor actors
    2000
  • Santa and Pete

    Pete

    actor

    actors
    1999
  • The Apartment Complex

    actor

    actors
    1999
  • She's All That

    Kadeem

    actor

    actors
    1999
  • Modern Vampires

    Trigger

    actor

    actors
    1998
  • Ice

    Kelvin

    actor

    actors
    1998
  • The 6th Man

    Jerrod Smith

    actor

    actors
    1997
  • City of Industry

    A Roc

    actor

    actors
    1997
  • Moesha

    - Cold Busted (1997) ... Dread actor actors
    1996
  • Money Train

    Hood

    actor

    actors
    1995
  • Sister, Sister

    - The Concert (1994) ... Cold Dog actor actors
    1994
  • Juice

    Contest Auditioner

    actor

    actors
    1992