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.
Alongside acting, Mark Sheppard is also known as a musician.
Mark Sheppard's most notable role to date came in Supernatural (2005), where he played Crowley. He also appeared in Doctor Who (2005) as Canton Delaware. Most recently appeared in In the Name of the Father (1993) as Paddy Armstrong.
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