Mark Andreas Sheppard is a British-American 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.
| Movie | Year | Type |
|---|---|---|
| Mysterious Island | 2010 | Director |
| Series | Episodes | Date | Type |
|---|---|---|---|
| Doom Patrol | Fun Size Patrol | June 25, 2020 | Guest Star |
| Inside Of You | Mark Sheppard | October 1, 2019 | Guest Star |
| Doom Patrol | Paw Patrol | March 15, 2019 | Guest Star |
| Doom Patrol | Cult Patrol | March 8, 2019 | Guest Star |
| MacGyver (2016) | Cigar Cutter | April 14, 2017 | Guest Star |
| White Collar | Live Feed | January 9, 2014 | Guest Star |
| White Collar | Digging Deeper | December 12, 2013 | Guest Star |
| Doctor Who: The Doctors Revisited | The Eleventh Doctor | November 24, 2013 | Guest Star |
| White Collar | At What Price | October 17, 2013 | Guest Star |
| Leverage | The Long Goodbye Job | December 25, 2012 | Guest Star |
| Leverage | The Broken Wing Job | September 9, 2012 | Guest Star |
| Leverage | The Queen's Gambit Job | August 28, 2011 | Guest Star |
| Doctor Who (2005) | Day of the Moon (2) | April 30, 2011 | Guest Star |
| Doctor Who (2005) | The Impossible Astronaut (1) | April 23, 2011 | Guest Star |
| Supernatural | Weekend at Bobby's | October 15, 2010 | Guest Star |
| Warehouse 13 | Buried (1) | September 14, 2010 | Guest Star |
| Warehouse 13 | Around the Bend | August 10, 2010 | Guest Star |
| Warehouse 13 | Beyond Our Control | July 20, 2010 | Guest Star |
| Leverage | The Maltese Falcon Job (2) | February 17, 2010 | Guest Star |
| Leverage | The Three Strikes Job (1) | February 10, 2010 | Guest Star |
| Leverage | The Zanzibar Marketplace Job | January 27, 2010 | Guest Star |
| CSI: Crime Scene Investigation | The Lost Girls (3) | November 12, 2009 | Guest Star |
| Battlestar Galactica (2003) | Daybreak (1) | March 13, 2009 | Guest Star |
| Leverage | The Second David Job (2) | February 24, 2009 | Guest Star |
| Leverage | The First David Job (1) | February 17, 2009 | Guest Star |
| Burn Notice | Bad Breaks | February 12, 2009 | Guest Star |
| Battlestar Galactica (2003) | Blood on the Scales | February 6, 2009 | Guest Star |
| Leverage | The 12-Step Job | February 3, 2009 | Guest Star |
| Leverage | The Two-Horse Job | December 16, 2008 | Guest Star |
| The Middleman | The Palindrome Reversal Palindrome | September 1, 2008 | Guest Star |
| The Middleman | The Clotharian Contamination Protocol | August 25, 2008 | Guest Star |
| In Plain Sight | To Serge with Love | August 3, 2008 | Guest Star |
| Battlestar Galactica (2003) | Sine Qua Non | May 30, 2008 | Guest Star |
| Shark | One Hit Wonder | May 13, 2008 | Guest Star |
| Battlestar Galactica (2003) | Crossroads (2) | March 25, 2007 | Guest Star |
| Battlestar Galactica (2003) | Crossroads (1) | March 18, 2007 | Guest Star |
| Battlestar Galactica (2003) | The Son Also Rises | March 11, 2007 | Guest Star |
| Medium | Blood Relations | November 29, 2006 | Guest Star |
| Without a Trace | Requiem | May 4, 2006 | Guest Star |
| 24 | Day 5: 3:00 P.M. - 4:00 P.M. | February 20, 2006 | Guest Star |
| Medium | Doctor's Orders | January 9, 2006 | Guest Star |
| Medium | Penny for Your Thoughts | May 9, 2005 | Guest Star |
| CSI: NY | Hush | February 23, 2005 | Guest Star |
| Monk | Mr. Monk vs. the Cobra | January 28, 2005 | Guest Star |
| Jake 2.0 | Whiskey - Tango - Foxtrot | November 12, 2003 | Guest Star |
| Fastlane | Monster | March 14, 2003 | Guest Star |
| Firefly | Serenity | December 20, 2002 | Guest Star |
| Firefly | Shindig | November 1, 2002 | Guest Star |
| Charmed | Witches in Tights | October 13, 2002 | Guest Star |
| Firefly | The Train Job | September 20, 2002 | Guest Star |
| CSI: Crime Scene Investigation | The Hunger Artist | May 16, 2002 | Guest Star |
| UC: Undercover | Manhunt | March 23, 2002 | Guest Star |
| V.I.P. | 48 1/2 Hours | February 16, 2002 | Guest Star |
| Special Unit 2 | The Skin | October 10, 2001 | Guest Star |
| The Chronicle | Bring Me the Head of Tucker Burns | August 25, 2001 | Guest Star |
| The Invisible Man (2000) | Diseased | February 5, 2001 | Guest Star |
| Star Trek: Voyager | Child's Play | March 8, 2000 | Guest Star |
| The Practice | Day in Court | December 12, 1999 | Guest Star |
| Sliders | Net Worth | January 11, 1999 | Guest Star |
| The X-Files | Fire | December 17, 1993 | Guest Star |
