Mark Sheppard
Mark Andreas Sheppard (born 30 May 1964) is a British actor and musician. He is often credited as Mark A. Sheppard. Sheppard is known for playing the demon/King of Hell Crowley on Supernatural and for his recurring roles as lawyer Romo Lampkin on the Battlestar Galactica reboot, Interpol investigator James Sterling on Leverage, and small-time crime lord Badger on Joss Whedon's Firefly.
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Acted in
Walker Independence
2022
as Hagan
Doom Patrol
2019
as Willoughby Kipling
MacGyver
2016
as Fake Dr. Zito
Doctor Who: Farewell to Matt Smith
2013
Doctor Who Explained
2013
as Self
Sons of Liberty
2013
as Ackley
Mysterious Island
2010
as Young Captain Nemo
Xtinction: Predator X
2010
as Dr. Charles LeBlanc
White Collar
2009
as Curtis Hagen
Warehouse 13
2009
as Benedict Valda
Dollhouse
2009
as Tanaka
Leverage
2008
as Jim Sterling
The Middleman
2008
as Manservant Neville
In Plain Sight
2008
Broken
2007
as Malcolm
Bionic Woman
2007
Chuck
2007
as Ring Director
Burn Notice
2007
as Tom Prescott
Shark
2006
Supernatural
2005
as Crowley
Doctor Who
2005
as Canton Delaware
Medium
2005
as Charles Walker
Unstoppable
2004
as Leitch
Battlestar Galactica
2004
as Romo Lampkin
Evil Eyes
2004
as Peter
Megalodon
2004
as Mitchell Parks
NCIS
2003
as Young Mr. Pain (uncredited)
Deep Shock
2003
as Chomsky
Without a Trace
2002
as Johnny Patani
Firefly
2002
as Badger
Fastlane
2002
as Ronan Dennehy
Monk
2002
as Chris Downey
New Alcatraz
2002
as Yuri
24
2001
as Ivan Erwich
Lost Voyage
2001
as Ian Fields
UC: Undercover
2001
I Love 1990s
2001
The Chronicle
2001
Special Unit 2
2001
as The Chameleon
Lady in the Box
2001
CSI: Crime Scene Investigation
2000
as Rod Darling
CSI: Crime Scene Investigation
2000
as Dimitri Sadesky
The Invisible Man
2000
as Yuri Gregorov
Farewell, My Love
2000
as M. J.
Out of the Cold
1999
as Fang
Soldier of Fortune, Inc
1999
as Christopher 'C.J.' Yates
Charmed
1998
as Arnon
Martial Law
1998
V.I.P.
1998
as Nero
Soldier of Fortune, Inc.
1997
as CJ Yates
The Practice
1997
Lover's Knot
1996
as Nigel Bowles
Sliders
1995
as Jack
Star Trek: Voyager
1995
as Leucon
M.A.N.T.I.S.
1994
In the Name of the Father
1993
as Paddy Armstrong
The X-Files
1993
as Bob the Caretaker / Cecil L'Ively
Silk Stalkings
1991
as Eric