[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/mark-sheppard_7196.jpg]]

-> ''"[[Series/{{Firefly}} Badger]] sighting!"''
-->-- '''[[MemeticMutation The Internet]]''' on Mark Sheppard

A London-born actor, Mark Andreas Sheppard (born 30 May 1967 in London, England) is mostly known for his television work. He's usually a single-episode guest star or a recurring bit player rather than a regular castmember, but his appearances are [[EnsembleDarkhorse always memorable.]]

Sheppard's roles tend towards the villainous, or at least the mysterious and morally ambiguous. (When asked, he'll mention with some pride that he's never played a "bad guy".) If your favorite show featured a sinister and slightly creepy-looking Englishman for a couple episodes, it was probably him.

He also does the voice-over work for BBC America's promos, so it's also possible you'd recognize him from his voice alone. Funnily enough, at [[Recap/DoctorWhoS32E1TheImpossibleAstronaut one point,]] he was doing a voiceover (in his British accent) introducing a show he was starring (in an American accent.)

Before becoming an actor he played drums for the PostPunk band Television Personalities. He is the son of legendary sci-fi genre actor Creator/WMorganSheppard, and between them they probably have the unique distinction of being the only father and son to appear in both ''Franchise/StarTrek'' and ''Franchise/DoctorWho'' (though only in the latter as the same character). On that note, they've twice been hired as a pair to be a TimeShiftedActor - the other time was on ''Series/{{NCIS}}''.

Not to be confused with Brigadier General Mark Jamison Sheppard, the GDI supreme commander from ''VideoGame/CommandAndConquerTiberianDawn'', or Mark Allen Shepard, aka Morn from ''Series/StarTrekDeepSpaceNine''.

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!!Notable roles:

* ''Series/TheXFiles'': Cecil L'ively, a gardener who starts fires with his mind.
* ''Series/{{Firefly}}'': Badger, one of the crew's regular criminal contacts. Interestingly, he's playing a role there originally meant for Creator/JossWhedon himself.
* ''Series/{{Sliders}}'': in ''Net Worth'' he plays a gang leader among the poor separated from the rich.
* ''Series/StarTrekVoyager'': Leucon, father of Icheb.
* ''Series/TheMiddleman'': Manservant Neville, an environmentally-conscious electronics mogul who may or may not be evil. [[spoiler:He totally is.]]
* ''Series/BurnNotice'': Tom Prescott, a bank robber who discovers that spies make bad hostages.
* ''Series/{{Leverage}}'': Jim Sterling, an insurance investigator who used to be Nate's coworker and close friend, now a WildCard antagonist to the team. "Sterling never loses" is an ''official rule'' in the writers' room.
* ''Series/WhiteCollar'': Curtis Hagen, a notorious art forger. Notable for being the show's first villain of the week, he later returned in the show's fifth season as its main antagonist.
* ''Series/{{Dollhouse}}'': Inspector Graham Tanaka
* ''Series/{{Battlestar Galactica|2003}}'': Romo Lampkin. An eccentric and ruthless lawyer--seemingly even [[AmoralAttorney amoral]]--[[AntiHero but still one of]] [[DarkIsNotEvil the good guys]].
* ''Series/{{Medium}}'': Dr. Charles Walker
* ''Series/{{Supernatural}}'': Crowley, leader of the [[DealWithTheDevil Crossroads Demons]] and new Ruler of Hell. Wound up becoming one of the breakout characters on the show, [[PromotionToOpeningTitles becoming a series regular in the 10th season]].
* ''Series/{{Warehouse 13}}'': Benedict Valda, one of the Regents, the shadowy organization that runs the Warehouse.
* ''VideoGame/TheConduit'': Michael Ford (no relation to [[Series/{{Leverage}} Nate Ford]]).
* ''Series/{{Chuck}}'': The Director of the The Ring
* ''Series/{{Jake 20}}'': Plays an American, a member of an Army Special Forces unit [[spoiler:which has gone rogue]], in the episode ''Whiskey-Tango-Foxtrot''.
* ''Series/{{CSI}}'': As a sleazy photographer in the S1 episode 'The Hunger Artist' and a Russian pimp in 'The Lost Girls.'
* ''Series/DoctorWho'': Canton Everett Delaware III, a recently ousted FBI agent brought back into the fold by UsefulNotes/RichardNixon to deal with a seemingly [[Recap/DoctorWhoS32E1TheImpossibleAstronaut impossible]] [[Recap/DoctorWhoS32E2DayOfTheMoon problem]]. Joined by [[RealLifeRelative his father]] in the same role but [[TimeshiftedActor older]]. And notably one of the rare characters he's played who ''[[PlayingAgainstType isn't]]'' an antagonist, jerkish AntiHero, or [[TokenEvilTeammate somewhere in between]], not counting the sequence where he [[PretendToBeBrainwashed Pretends To Be Brainwashed]].
* ''Series/{{NCIS}}'': Marcin Jerek, a CIA TortureTechnician. This is another role he shared with his father.
* ''Series/TwentyFour'': Ivan Erwich, a recurring antagonist in the first half of season five. The role was intended for Eddie Izzard, who quit after one day.
* ''Series/{{Monk}}'': A crooked gravedigger who happens to be the killer of the week, in an episode that was notable for being one of the earliest ones with Monk's second assistant Natalie. He also had a [[OohMeAccentsSlipping little trouble]] keeping his American accent in this one.
* ''Series/DoomPatrol2019'': Willoughby Kipling, a ComicBook/JohnConstantine [[TrenchcoatBrigade expy]] who needs the Doom Patrol to help him stop the EndOfTheWorld.
* ''[[Series/Charmed1998 Charmed]]'': Arnon, a demon who desires to increase his powers.
* ''WesternAnimation/MaoMaoHeroesOfPureHeart'': Tiny Toad, leader of the Thicket Thieves.
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