Mark Sheppard

Mark Andreas Sheppard is a British-American actor and musician. He is often credited as "Mark A. Sheppard". Sheppard is known for his recurring roles as the demon/King of Hell Crowley on Supernatural, 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.

Firefly · S1, E1

Episode 1

Serenity's captain agrees to transport several passengers while flying under the ruling government's radar.
Firefly · S1, E4

Episode 4

While at a ball, Mal unwittingly challenges Inara's date; a merciless crime lord takes Serenity's crew hostage.
Medium · S2, E12

Episode 12

Allison is charged with assault after an old and frightening adversary comes back to haunt her dreams.
The X-Files · S1, E12

Fire

Mulder and Scully join forces with an inspector from Scotland Yard when a man with pyrokinetic powers stalks members of the British aristocracy.
Medium · S3, E4

Episode 4

A serial killer Allison has dealt with in the past, Dr Charles Walker, is inhabiting the bodies of the living in order to continue his killing spree and Allison unwittingly becomes his next target.
Supernatural · S5, E20

The Devil You Know

The demon Crowley promises to help Dean and Sam find the remaining Horseman rings so they can trap Lucifer.

Mark Sheppard

Movies

Shows

Director

Guest Appearances