Christopher Diamantopoulos ( (Khristóforos Diamantópoulos); born May 9, 1975) is a Canadian actor. He played Russ Hanneman in the HBO series Silicon Valley and starred in the film The Three Stooges as Moe Howard, and the TV series Good Girls Revolt. He voiced Mickey Mouse in the eponymous television series, The Wonderful World of Mickey Mouse and the short film Once Upon a Studio; for the former, he received two Emmy Award nominations, and worked on multiple characters in the Prime Video animated series Invincible.
Early life Diamantopoulos was born on May 9, 1975, to Greek immigrant parents in Toronto, Ontario, Canada. He grew up splitting his time between Canada and Greece. His mother is from Ioannina and his father is from Peloponnese. He is a practicing member of the Greek Orthodox Church, and a fluent Greek speaker.
Career Diamantopoulos began his career working in television commercials and professional theatre productions at the age of nine. At the age of eighteen, he left home to work in a series of American national tours. A short time later, he worked on Broadway, where he played leading parts in The Full Monty (2002) and Les Misérables (2003). Diamantopoulos attended East York Collegiate Institute.
He played Robin Williams in Behind the Camera: The Unauthorized Story of Mork & Mindy alongside Erinn Hayes. He has guest-starred in several series, including Kevin Hill, Charmed, The Sopranos, The Office, Nip/Tuck and Boston Legal. He played the interior decorator in the miniseries The Starter Wife.
He had a recurring role on State of Mind and guest-voiced on American Dad! in 2009.
On the eighth season of 24, he played U.S. president Allison Taylor's Chief of Staff Rob Weiss. He played Frank Sinatra in The Kennedys. Diamantopoulos played Moe Howard in the 2012 film The Three Stooges.
In 2013, Diamantopoulos voiced Mickey Mouse in the television series with the same name, and its follow-up series The Wonderful World of Mickey Mouse. Although Bret Iwan has voiced Mickey in most media following Wayne Allwine's death from diabetes in May 2009, Diamantopoulos voiced the character in retro-styled productions, giving Mickey Mouse a voice similar to that of Walt Disney. Most recently, he reprised the character in the 2023 short film Once Upon a Studio, made to celebrate the centennial of The Walt Disney Company and Walt Disney Animation Studios.
He had recurring roles on the NBC sitcoms Up All Night, as Maya Rudolph's on and off lover, Julian; The Office, as Brian, a former member of the show's documentary film crew (alongside Zach Woods, who he would later work again with on Silicon Valley); and on Arrested Development, as Marky, Lindsay's face-blind environmentalist boyfriend.
He appeared in the television sitcom Episodes playing the part of TV network boss Castor Sotto, and Mr. Chris in the television adaptation of About a Boy.
In 2017, Diamantopoulos starred in the musical Waitress on Broadway.
On October 11, 2018, it was revealed by TVLine that he would have a role in the spin-off pilot for the situation comedy The Middle playing Sue Heck's mercurial, charming and rich boss Nick.
He has an upcoming starring role alongside Tom Blyth in the comedy Discussion Materials adapted from Bill Keenan's memoir of the same name.
As of 28 of August 2026 he has a role as an agent, in the Apple TV series “Dark matter” in season 2.
Personal life He met Becki Newton at a subway station in New York City. They married in 2005. The couple have four children: a boy born in November 2010, a girl born in 2014, a girl born in 2020, and a girl born in 2022.
Filmography Film Year Title Role Notes 2000 The Adulterer Dave 2001 Drop Dead Roses Trevor 2006 Wedding Daze William 2007 Three Days to Vegas Laurent Perrier Protagonist Ancient Greek Narrator (voice) Documentary 2009 Under New Management Robert Monte 2012 The Three Stooges Moe Howard 2013 The Art of the Steal Guy de Cornet Empire State Spiro 2014 Dr. Cabbie Colin Hill 2015 Man Vs. Doug Batman Unlimited: Animal Instincts Green Arrow (voice) Direct-to-video A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its credits or other reliable sources of information. Batman Unlimited: Monster Mayhem 2016 Batman Unlimited: Mechs vs. Mutants 2018 The Truth About Lies Eric Stone 2021 Justice Society: World War II Steve Trevor (voice) Direct-to-video Red Notice Sotto Voce Diary of a Wimpy Kid Frank Heffley (voice) 2022 Beavis and Butt-Head Do the Universe Police Officer, Prisoners, Corrections Officers (voice) Diary of a Wimpy Kid: Rodrick Rules Frank Heffley (voice) High Heat Tom2023 Once Upon a Studio Mickey Mouse (voice) Diary of a Wimpy Kid Christmas: Cabin Fever Frank Heffley (voice) The Boys in the Boat Royal Brougham 2025Diary of a Wimpy Kid: The Last StrawFrank Heffley (voice)https://www.animationmagazine.net/2025/11/diary-of-a-wimpy-kid-the-last-straw-trailer-brings-jeff-kinney-characters-back-to-screens/
Television Year Title Role Notes 2002 Law & Order Chris Wilson Episode: "Open Season" 2004 American Dreams Coach Tom Berg 2 episodes Charmed Inspector Davis Episode: "Charmed Noir" DeMarco Affairs Ernesto Boticelli Television film Frasier Steve Episode: "And Frasier Makes Three" Kevin Hill Gil Hacker Episode: "Love Don't Live Here Anymore" Nip/Tuck Chad Myers Episode: "Erica Noughton" Third Watch Hansen Episode: "Black and Blue" 2005 Behind the Camera: The Unauthorized Story of Mork & Mindy Robin Williams Television film Into the Fire NTSB Agent #2 Television film Jake in Progress Cesar Episode: "Stand by Your Man" 2006 52 Fights Rob Television film Boston Legal Douglas Karnes Episode: "Whose God Is It Anyway?" Jason Barone Episode: "The Fleshy Part of the Thigh" 2006–present American Dad! Various voices 38 episodes 2007 CSI: Crime Scene Investigation Oliver Zarco Episode: "The Chick Chop Flick Shop" Raines Andrew Carver Episode: "Closure" Rodney 6 episodes State of Mind Phil Erikson 6 episodes 2008 Eli Stone Jake McCann Episode: "Wake Me Up Before You Go-Go" The Starter Wife Rodney 10 episodes 2010 24 Rob Weiss 12 episodes 2011 Frank Sinatra Episode: "Bobby's War" 2011–2012 Up All Night Julian 4 episodes 2012 WWE Raw Moe Howard Episode #20.15 Made in Hollywood Moe Episode #7.24; archive audio only 2013 Arrested Development Marky Bark, Divine Spirit 7 episodes Community Reinhold Episode: "Alternative History of the German Invasion" Doctor Lollipop Dr. Lollipop (voice) Pilot Chad Episode: "The Birds of Granby" Brian 5 episodes 2013–2018 Family Guy Parker Stanton, Frank Maxwell, Stryker Foxx, Millipede, Dean Martin, Mickey Mouse (voice) 7 episodes 2013–2019 Mickey Mouse Mickey Mouse, additional voices 94 episodes 2014 Hannibal Clark Ingram 2 episodes High Moon Ian Television film 2014–2015 About a Boy Mr. Chris 9 episodes Episodes Caster Sotto 8 episodes 2015 Batman Unlimited Green Arrow (voice) 2 episodes BoJack Horseman Matthew Fox (voice) Episode: "Hank After Dark" Club Penguin: Halloween Panic! Redrum (voice) Television special Ellen More or Less Jerry Television film Robot Chicken Michael Bay, Fritz Darges (voice) Episode: "Zero Vegetables" 2015–2016 Good Girls Revolt Evan Phinnaeus 'Finn' Woodhouse 10 episodes 2015–2019 Silicon Valley Russ Hanneman 25 episodes2016 Style Code Live Himself Episode: "Good Girls Revolt Cast Interview & One Knit Wonders" Duck the Halls: A Mickey Mouse Christmas Special Mickey Mouse (voice) Television special 2016–2018 Skylanders Academy Master Eon, Chompy Mage (voice) Voice, 38 episodes Justice League Action Green Arrow, Metallo, Nyorlath, H.I.V.E. Master (voice) 10 episodes 2017 Old Man Parker Television film Click, Clack, Moo: Christmas at the Farm Mouse (voice) Television film Entertainment Tonight Himself 2 episodes Law & Order: Special Victims Unit David Willard Episode: "Know It All" The Scariest Story Ever: A Mickey Mouse Halloween Spooktacular Mickey Mouse, Morty Fieldmouse, Ferdie Fieldmouse (voice) Television special 2017–2018 Celebrity Page Himself 2 episodes 2018 Patrick, Terry McKenna 6 episodes Harvey Girls Forever! Boy #1, Cheesecake the Horse (voice) Episode: "Campfire Weekend/Girls Just Wanna Save Fun" Let's Get Physical Barry Cross 8 episodes Sue Sue in the City Nick Television film Voltron: Legendary Defender Macidus (voice) 2 episodes 2018–2021 DuckTales Storkules, Drake Mallard/Darkwing Duck, Mikey Melon, Mystical Goat, Eggheads, Hades (voice) 9 episodes 2018–2019 Go Away, Unicorn! Unicorn, Dad (voice) 26 episodes 2019 FBI Benjamin Chase Episode: "Invisible" Joe Beaumont Episode: "Nightmare at 30,000 Feet" (credited as "The 'Pilot'") Elementary Jason Wood Episode: "Into the Woods" Green Eggs and Ham Bean Counter (voice) Episode: "Here" 2020 Harley Quinn Aquaman (voice) 2 episodes Rapunzel's Tangled Adventure Brock Thunderstrike/Flynn Rider (voice) Voice, episode: "Flynnposter" 2020–2021 The Fungies! Cmdr. Beefy Voice, 6 episodes 2020–2025 Blood of Zeus Poseidon, Evios, Brontes (voice; 15 episodes) 2020–2023 Mickey Mouse, additional voices 2021–present Invincible Donald Ferguson, Doc Seismic, Isotope (voice) 2021 Bless the Harts Minister Mikey (voice) Episode: "Easters 11" Solos Technician Episode: "Jenny" Big City Greens Ed Zecutive (voice) Episode: "Animation Abomination" Centaurworld Ched (voice) 18 episodes The Harper House Dr. Morocco (voice) 7 episodes Inside Job Robotus/Alpha-Beta (voice) 6 episodes The Ghost and Molly McGee Ezekiel "Tug" Tugbottom (voice) Episode: "Monumental Disaster" True Story Savvas 2022 Made for Love Agent Hank Walsh The Boys Presents: Diabolical Server, TV Reporter, CLF Leader (voice) 2 episodes Super Giant Robot Brothers Thunder (voice) 10 episodes 2022–2023 Pantheon Julius Pope (voice) 2022–present Beavis and Butt-Head Host, Keith, John Liland, George, Angel, Steve (voice) 6 episodes 2023 Daisy Jones & the Six Lee Parlin Miniseries Mrs. Davis JQ TV series The Bad Guys: A Very Bad Holiday Mr. Snake (voice) Television special 2024 The Bad Guys: Haunted Heist Mr. Snake, Reginald E. Scary (voice) Television special The Sticky Mike Byrne 6 episodes Zombies: The Re-Animated Series Sasquatch (voice) Episode: "Reality Check, Please!/Their Guy Sasquatch" 2025 The Terminal List: Dark Wolf Aaron Fuller 2 episodes 2025–present The Bad Guys: The Series Mr. Snake (voice) 19 episodes 2026 Star Wars: Maul – Shadow Lord Looti Vario (voice) 9 episodes 2026 Dark Matter Agent Mitchel MacNamara Season 2
Stage Year Title Role Venue Notes 1995Andrew Lloyd Webber - Music of the NightPerformerTouring 2000 The Full MontyEthan GirardEugene O'Neill TheatreReplacement 2001National Tour 2003 Les Misérables Marius Pontmercy Imperial TheatreReplacement 2017WaitressDr. Jim PomatterBrooks Atkinson Theatre
Video games Year Title Voice role Notes 2003Celebrity DeathmatchVoice-over actorCredited as Chris Diamantopolis 2007300: March to GloryDaxos, Persian Commander, Various PersiansGrouped under "Cast" 2023Star Wars Jedi: SurvivorMXNK-6 / Monk
Theme park attractions Year Title Role Notes 2020Mickey & Minnie's Runaway RailwayMickey MouseVoice
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