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. Description above from the Wikipedia article Mark Sheppard, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Born: 30 May 1964
Played In
Exes
Senior Investigator Gary
Secret Level
Astropath / Ultramarines Orbital Command (voice)
Walker Independence
Hagan
Doom Patrol
Willoughby Kipling
MacGyver
Fake Dr. Zito
Doctor Who: Farewell to Matt Smith
Doctor Who Explained
Self
Sons of Liberty
Ackley
Mysterious Island
Young Captain Nemo
Xtinction: Predator X
Dr. Charles LeBlanc
White Collar
Curtis Hagen
Warehouse 13
Benedict Valda
Dollhouse
Tanaka
Leverage
Jim Sterling
The Middleman
Manservant Neville
In Plain Sight
Russell
Broken
Malcolm
Bionic Woman
Anthony Anthros
Chuck
Ring Director
Burn Notice
Tom Prescott
Shark
Rupert Stone
Supernatural
Crowley
Doctor Who
Canton Delaware
Medium
Charles Walker
Unstoppable
Leitch
Battlestar Galactica
Romo Lampkin
Evil Eyes
Peter
Megalodon
Mitchell Parks
NCIS
Young Mr. Pain (uncredited)
Las Vegas
George Beckwahr
Deep Shock
Chomsky
Jake 2.0
Hartman
Without a Trace
Johnny Patani
Firefly
Badger
Fastlane
Ronan Dennehy
Monk
Chris Downey
New Alcatraz
Yuri
24
Ivan Erwich
Lost Voyage
Ian Fields
UC: Undercover
I Love 1990s
The Chronicle
Special Unit 2
The Chameleon
Lady in the Box
CSI: Crime Scene Investigation
Rod Darling
CSI: Crime Scene Investigation
Dimitri Sadesky
The Invisible Man
Yuri Gregorov
Farewell, My Love
M. J.
Out of the Cold
Fang
Soldier of Fortune, Inc
Christopher 'C.J.' Yates
Charmed
Arnon
Martial Law
Clay Sullivan
V.I.P.
Nero
Nether World
California
Soldier of Fortune, Inc.
CJ Yates
The Practice
Eddie Wicks
Lover's Knot
Nigel Bowles
Sliders
Jack
Star Trek: Voyager
Leucon
M.A.N.T.I.S.
In the Name of the Father
Paddy Armstrong
The X-Files
Bob the Caretaker / Cecil L'Ively
Silk Stalkings
Eric
Ever After
The Ringmaster