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DeMann started at the age of 5 doing commercials and voice overs in his hometown of Chicago. He was born in the business under the guidance of his father, acclaimed actor/voice over, Douglas Alan Mann. Douglas was one of the founders of the critically acclaimed theater, Chicago Theater Company, Chicago's first Black Equity Theater. At his dad's ... See full bio »
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Known For


Hide Hide Show Show Miscellaneous Crew (8 credits)
 2010 For the Love of Ray J (TV Series) (production coordinator - 2 episodes)
- Reunion Special (2010) ... (production coordinator)
- Episode #2.13 ... (production coordinator)
 2009 I Do... I Did! (key craft service) / (production assistant - as De Mann)
 2007 Rock of Love with Bret Michaels (TV Series) (assistant production coordinator - 1 episode)
- Reunion ... (assistant production coordinator - as De Mann)
 2007 The 21st Annual Genesis Awards (Video) (key production assistant)
 2005 Social Guidance (key production assistant)
 2005 All Starz Live (Video) (key production assistant)
 2003 The Great Commission (production assistant)
 2000 Shadow of the Blair Witch (TV Movie) (production assistant)
Hide Hide Show Show Actor (8 credits)
 2016 Shameless (TV Series)
- The Defenestration of Frank (2016) ... Herman
 2009 Chain Letter
Scientist (as De Mann)
 2007 Random! Cartoons (TV Series)
- Teapot! (2007) ... Announcer (voice)
 2001 Spring Break Lawyer (TV Movie)
 1997 Pimps (Short)
Prostitute (as De Mann)
 1997 Early Edition (TV Series)
College Student
- Love Is Blind (1997) ... College Student (uncredited)
 1991 Up Against the Wall
Hide Hide Show Show Transportation department (4 credits)
 2009 Chain Letter (transportation driver - as De Mann)
 2008 Nite Tales: The Movie (production driver)
 2008 The Hustle (driver: cast)
 2007 Dead Tone (driver - as De Mann)

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Personal Details

Alternate Names:

De Alan Mann | De Mann


5' 7" (1.7 m)

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