Dov Yosef Tiefenbach (born December 8, 1981, in Toronto, Ontario, Canada) is a Jewish Canadian actor and musician, 5′ 5″ (165 cm) tall, who began his acting career at age twelve in commercials before landing his first on-screen role as Josh Avery in the television series RoboCop (1994). He made his first starring role as Murray Murray in the short film Love Child (1995) alongside Neve Campbell, and went on to star as Nick Burns in the 1996 Broadway production of A Thousand Clowns opposite Judd Hirsch. He won the Leo Award for Best Supporting Male Performance for Flower & Garnet (2002), and as a musician he fronted the Toronto indie pop bands Theresa Sound-World (named after a Sonic Youth song) and Trucks Leaving. He currently resides in Los Angeles. His most notable film credits include Azrael in Jason X (2001), Bradley Thomas in Harold & Kumar Go to White Castle (2004), a role in Tommy Boy (1995), It Takes Two (1995), The Mighty (1998), Knockaround Guys (2001), Adrian in The Dark Hours (2005), Billy in Parasomnia (2008), Hershey in You Might as Well Live (2009), Moises in Polish Bar (2010), Oogie in Sympathy for Delicious (2010), Logan in Asthma (2015), Samson Griggs in Poor Boy (2016), Will Sacco in We Forgot to Break Up (2017), a Club Customer in Molly's Game (2017), Jason in All My Puny Sorrows (2021), and Larry in It Feeds (2025). On television he is best known as Keechie in The Umbrella Academy (2020, 6 episodes), Gizmo in Titans (2021), Percy Campbell in Transplant (2023, 3 episodes), Steve in The Boys (2024, 2 episodes), Fitz in Law & Order: Special Victims Unit (2018–2019, 5 episodes), with additional credits in Goosebumps (1996, 1998), Little Men (1998), Witchblade (2002), CSI: Crime Scene Investigation (2006), The Strain (2014), Homeland (2017), Pretty Hard Cases (2021), and Murdoch Mysteries.
as Larry
as Jason
as Chad 'Cisco' Payne(1 ep)
as Mr. Harchol
as Percy Campbell(3 eps)
as Steve(2 eps)
as Keechie(6 eps)
as Gizmo(1 ep)
as Samson Griggs
as James
as Club Customer
as Will Sacco
as David
as Photographer(1 ep)
as Logan Backer
as Aaron
as Air Traffic Controller(1 ep)
as Benny
as Cashier
as Zed Starkovitch
as Andre Lustig(1 ep)
as Robin
as Bert
as Jeweler(1 ep)
as Ronnie
as Triple Decka 1K
as Oogie
as Elliot Hughes(1 ep)
as Hershey Hershenfield
as Main Character
as Billy
as Stewart "The Sauce" Jackson
as Lucky Carroway(3 eps)
as Adrian
as Crackle(6 eps)
as Hippie Student
as Rufus(1 ep)
as Organic Clerk
as Lonny Goosen
as Willy Lopez
as Tommy
as Matt
as Ronnie
as Teeze
as Azrael
as Mask
as High School Kid
as Ryan Klein
as Reggie
as Little Steve
as Anthony Himmer(1 ep)
as Irwin Flickas
as Marty Billings(1 ep)
as Fitz(5 eps)
as Yitzy(1 ep)
as Jack Ford(6 eps)
as Erek(2 eps)
as Doghouse Boy #1
as Tim Swanson
as Boy with Purple Socks
as Mark's Friend
as Joel
as Harry Butkis Jr.
as Tim Swanson(1 ep)
as Fred(2 eps)
as Kid at Lake
as Murray Murray
as Caller (voice)(1 ep)
as Eric