Acting
Flex Alexander
Born 1970-04-15
New York City, New York, USA
Department: Acting
Biography
Mark Alexander Knox (born April 15, 1970), better known as Flex Alexander or Flex, is an American actor, comedian and dancer.
Known For
Prominent works featuring Flex Alexander
TV
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Lucifer
2016
TMDB4.2
TV
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Grey's Anatomy
2005
TMDB4.1
TV
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CSI: Miami
2002
TMDB3.9
Movie
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She's All That
1999
TMDB3.1
Movie
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Snakes on a Plane
2006
TMDB2.8
TV
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Blue Bloods
2010
TMDB3.9
TV
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Station 19
2018
TMDB4.1
Movie
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The Hills Have Eyes 2
2007
TMDB2.8
Movie
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Money Train
1995
TMDB3.0
TV
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Masters of Sex
2013
TMDB3.5
Filmography & Credits
Complete career catalog (62 titles)
| Poster | Title | Character / Role | Type | Year |
|---|---|---|---|---|
 | Unrequited | Erik | Movie | 2026 |
 | The Assistant | Shawn Fields | Movie | 2023 |
 | Carl Weber's The Black Hamptons | Devon aka Lojack | TV Series | 2022 |
 | Kenan | Derek | TV Series | 2021 |
 | Trigger | Michael Mass | Movie | 2020 |
 | Ballbuster | Luther | Movie | 2020 |
 | mixed-ish | George | TV Series | 2019 |
 | Maybe I'm Fine | Jeffrey | Movie | 2019 |
 | Carl Weber's The Family Business | Low Jack | TV Series | 2018 |
 | Station 19 | Evan Forrester | TV Series | 2018 |
 | And I Danced | Self | Movie | 2018 |
 | Love by the 10th Date | Preacher Hill | Movie | 2017 |
 | Lucifer | Simon Hallbrooks | TV Series | 2016 |
 | Soul Ties | Jessie | Movie | 2015 |
 | My Sister's Wedding | Matthew | Movie | 2013 |
 | Masters of Sex | Walter | TV Series | 2013 |
 | 24 Hour Love | Bradford | Movie | 2013 |
 | Gotham Comedy Live | Self - Host | TV Series | 2012 |
 | Steve Harvey | Self | TV Series | 2012 |
 | The Client List | The Wolf | TV Series | 2012 |
 | Blue Bloods | Demarcus King | TV Series | 2010 |
 | The List | Chet | Movie | 2007 |
 | The Hills Have Eyes 2 | Sarge | Movie | 2007 |
 | Poor Boy's Game | Ossie Paris | Movie | 2007 |
 | Snakes on a Blog | Self | Movie | 2007 |
 | Snakes on a Plane: Meet the Reptiles | Self | Movie | 2007 |
 | Snakes on a Set: Behind the Scenes | Self | Movie | 2007 |
 | The Snake Pit: On the Set of 'Snakes on a Plane' | Self | Movie | 2007 |
 | Love and Other Four Letter Words | Arnold | Movie | 2007 |
 | Snakes on a Plane | Three G's | Movie | 2006 |
 | Pure Venom: The Making of Snakes on a Plane | Self | Movie | 2006 |
 | Her Minor Thing | Marty | Movie | 2005 |
 | Grey's Anatomy | Evan Forrester | TV Series | 2005 |
 | Cuts | Self / Appearance | TV Series | 2005 |
 | Shira: The Vampire Samurai | Small Change Willie (as Flex) | Movie | 2005 |
 | Man in the Mirror: The Michael Jackson Story | Michael Jackson | Movie | 2004 |
 | Sweet Oranges | Himself | Movie | 2004 |
 | Gas | Damien | Movie | 2004 |
 | On Air with Ryan Seacrest | Celebrity Courtyard Correspondent | TV Series | 2004 |
 | CSI: Miami | Beau Lendell | TV Series | 2002 |
 | Out Cold | Anthony | Movie | 2001 |
 | One on One | Flex Washington | TV Series | 2001 |
| One on One | Producer | TV Series | 2001 |
| One on One | Co-Executive Producer | TV Series | 2001 |
 | Girlfriends | Darnell Wilkes | TV Series | 2000 |
 | Santa and Pete | Pete | Movie | 1999 |
 | The Apartment Complex | Self / Appearance | Movie | 1999 |
 | The Parkers | Self / Appearance | TV Series | 1999 |
 | She's All That | Kadeem | Movie | 1999 |
 | Modern Vampires | Trigger | Movie | 1998 |
 | Ice | Kelvin | Movie | 1998 |
 | Total Security | Self / Appearance | TV Series | 1997 |
 | Brooklyn South | Buster | TV Series | 1997 |
 | The 6th Man | Jerrod Smith | Movie | 1997 |
 | City of Industry | A Roc | Movie | 1997 |
 | Homeboys in Outer Space | Tyberius Walker | TV Series | 1996 |
 | Moesha | Dread | TV Series | 1996 |
 | Money Train | Hood | Movie | 1995 |
 | New York Undercover | Self / Appearance | TV Series | 1994 |
 | Sister, Sister | Cold Dog | TV Series | 1994 |
 | Where I Live | Self / Appearance | TV Series | 1993 |
 | Juice | Contest Auditioner | Movie | 1992 |