

Mark Gatiss (/ˈɡeɪtɪs/; born 17 October 1966) is an English actor, comedian, screenwriter, director, producer and novelist. He is best known for his work on television, acting in and co-creating shows with Steven Moffat. Gatiss has received several awards, including a BAFTA TV Award, a Primetime Emmy Award, a Peabody Award, and two Laurence Olivier Awards. Gatiss co-created, co-wrote and acted in the BBC comedy series The League of Gentlemen (1999–2002). He co-created and portrayed Mycroft Holmes in the BBC series Sherlock (2010–2017) and Frank Renfield in the BBC / Netflix miniseries Dracula (2020). He also wrote several episodes of Doctor Who during Moffat's tenure as showrunner and two episodes during Russell T Davies' earlier tenure. His other TV roles include Tycho Nestoris in Game of Thrones (2014–2017), Stephen Gardiner…
Popular credits from TMDb for additional context.

Game of Thrones
2011 • TV
Tycho Nestoris

Midsomer Murders
1997 • TV
Rev Giles Shawcross

Doctor Who
2005 • TV
Gantok

Agatha Christie's Poirot
1989 • TV
Leonard Boynton

QI
2003 • TV
Self

Sherlock
2010 • TV
Mycroft Holmes

Agatha Christie's Marple
2004 • TV
Ronald Hawes

Mission: Impossible - The Final Reckoning
2025 • Movie
Angstrom

Good Omens
2019 • TV
Mr. Harmony

The Fantastic 4: First Steps
2025 • Movie
Ted Gilbert
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