
William James Remar (born December 31, 1953) is an American actor. Some of his best known film roles are as Ajax in The Warriors (1979), as homicidal maniac Albert Ganz in 48 Hrs. (1982), as Dutch Schultz in The Cotton Club (1984), and as Lord Raiden in Mortal Kombat: Annihilation (1997). He has had smaller roles in many other notable films, including Drugstore Cowboy (1989), Boys on the Side (1995), Judge Dredd (1995), Psycho (1998), What Lies Beneath (2000), 2 Fast 2 Furious (2002), Blade: Trinity (2004), Ratatouille (2007), Pineapple Express (2008), RED (2010), X-Men: First Class (2011), Django Unchained (2012), Once Upon a Time in Hollywood (2019), Oppenheimer (2023), and Megalopolis (2024). He was originally cast as Corporal Hicks in Aliens (1986) before being replaced by Michael Biehn.
On television, Remar's recurring roles include Richard Wright, the on-off tycoon boyfriend of Samantha in Sex and the City (2001 - 2004), Harry Morgan in Dexter (2006 - 2013) and Dexter: Resurrection (2025 - present), the voice of Vilgax in Ben 10 (2009 - 2012), Tonraq in The Legend of Korra (2013 - 2014), and Peter Gambi in Black Lightning (2018 - 2021). He also voices Executor Hideo in the Destiny video game series.
Remar has been married to Atsuko Remar since 1984. They have two children.

The Odyssey
2026 · as Tiresias

Oppenheimer
2023 · as Henry Stimson

They Will Kill You
2026 · as The Pig's Head (voice)

Ratatouille
2007 · as Larousse (voice)

Once Upon a Time... in Hollywood
2019 · as 'Bounty Law' - 'Ugly Owl'

Django Unchained
2012 · as Butch Pooch / Ace Speck

Judge Dredd
1995 · as Block Warlord (uncredited)

Blade: Trinity
2004 · as Ray Cumberland

The Girl Next Door
2004 · as Hugo Posh

Transformers One
2024 · as Zeta Prime (voice)

RED
2010 · as Gabriel Singer

The Warriors
1979 · as Ajax

48 Hrs.
1982 · as Albert Ganz

Pineapple Express
2008 · as General Bratt

Mortal Kombat: Annihilation
1997 · as Raiden

What Lies Beneath
2000 · as Warren Feur

Psycho
1998 · as Patrolman

Megalopolis
2024 · as Charles Cothope