Ritchie Coster

Ritchie Coster (born 1 July 1967) is an English character actor. He is best known for playing the roles of Dietrich Banning in The Tuxedo (2002), the Chechen in The Dark Knight (2008), Elias Kassar in Blackhat (2015), Mayor Austin Chessani on the second season of the HBO anthology television series True Detective and Francisco Scaramucci / Mr. Blue on the SyFy television series Happy! Since 2025, he has been part of the main cast of the CBS drama series Watson.

Ritchie Coster
Born	(1967-07-01) 1 July 1967 (age 58) London, England
Alma mater	Latymer School, Edmonton Guildhall School of Music and Drama
Occupation	Actor
Years active	1997–present

Career

Coster has played various roles throughout his career. In the 1998 remake of Rear Window he played the sculptor who was married to the bottle loving woman Ilene played by Allison Mackie.^[1] In television, he has appeared in at least seven episodes of the Law & Order franchise from 1999 to 2009.^[2]

Filmography

Film

Year	Title	Role	Notes
1999	The Thomas Crown Affair	Janos
2000	The Photographer	Attacker #1
	Bait	Buyer
2001	15 Minutes	News Stand Vendor
2002	Pipe Dream	Pascal
	The Tuxedo	Dietrich Banning
2006	The Sentinel	The Handler
2007	American Gangster	Joey Sadano
2008	The Dark Knight	The Chechen
2010	The Bounty Hunter	Ray
	Let Me In	Mr. Zoric
	Pete Smalls Is Dead	Hal Lazar
2014	By the Gun	Tony Matazano
	Rose	Samuel	Short film
2015	Blackhat	Elias Kassar
	Creed	Pete Sporino
2016	The Great & the Small	Richie
2017	Submission	Dean Bentham
2019	The Bygone	Beckett Summer
2021	After Yang	Russ
2024	King Ivory	Mickey Greene

Television

Year	Title	Role	Notes
1997	Dellaventura	—	Episode: "Hell's Kitchen"
1997–1998	New York Undercover	Keith Draper and Flannagan	2 episodes
1998	F/X: The Series	Jimmy Hickman	Episode: "Reaper"
	Rear Window	Julian Thorpe	TV movie
1999	Law & Order: Special Victims Unit	Carlo Parisi	Episode: "...Or Just Look Like One"
	Third Watch	Rudy	Episode: "Sunny, Like Sunshine"
2000	Sex and the City	Caleb McDougal	Episode: "Don't Ask, Don't Tell" Credited as Richie Coster
2000–2001	As the World Turns	Gabriel Frank	Unknown episodes
2000–2006	Law & Order	Jorgan Stern Mark Bruner DEA Agent Kevin Almonte	3 episodes[a]
2002–2009	Law & Order: Criminal Intent	Simon Matic and Jack Taylor	2 episodes
2002	HBO First Look	Himself	Episode: "'The Tuxedo': Tailor Made for Jackie Chan"
2003	Hack	Nick Trepov	2 episodes
2004	Traffic	Fazal	Miniseries 3 episodes
	With God on Our Side: George W. Bush and the Rise of the Religious Right in America	Himself (Narrator)	TV movie
2005	Jonny Zero	Garret / Garrett	Series regular; 10 episodes
	Law & Order: Trial by Jury	Shane Lucas	Episode: "Skeleton"
2005–2006	Guiding Light	Nate / Alfred	4 episodes
	Beautiful People	Tyler Lustig	3 episodes
2006	Kidnapped	Bradwell Scott	Episode: "Sorry, Wrong Number"
2008	John Adams	Captain Preston	Episode: "Join or Die"; Miniseries
	CSI: Crime Scene Investigation	Arthur Blisterman	Episode: "Art Imitates Life"
2009	Virtuality	Dr. Jimmy Johnson	TV movie
2011–2012	Luck	Renzo	Series regular; 9 episodes
2011	Person of Interest	Assassin	Episode: "Ghosts"
2012	Luck: A Day at the Races	Himself	TV movie
2013	The Blacklist	Anslo Garrick	2 episodes
2014	Babylon Fields	Ernie	TV movie
2015	HBO First Look: Blackhat	Himself	TV movie
	Blackhat: On Location Around the World	Himself	Documentary video
	Blackhat: Creating Reality	Himself	Documentary video
	True Detective	Mayor Austin Chessani	7 episodes
2017	Billions	Donald Thayer	3 episodes
	Shades of Blue	Michael Bianci	7 episodes
2017–2019	Happy!	Francisco "Mr. Blue" Scaramucci, Orcus	Main role
2020	The Flight Attendant	Victor	3 episodes
2021	The Walking Dead	Pope	4 episodes
2022–2023	Tulsa King	Caolan Waltrip	7 episodes
2025–present	Watson	Shinwell Johnson	Main cast

Key

†	Denotes series/miniseries that have not yet been released

Video games

Year	Title	Voice role
2003	Midnight Club 2	Blog
2007	BioShock	Bill McDonagh

Notes

1. "Dissonance" as Jorgan Stern, "Bodies" as Mark Bruner and "Invaders" as DEA Agent Kevin Almonte