William Emerson Arnett (/ɑːrˈnɛt/; born May 4, 1970) is a Canadian and American actor and comedian. He is widely known for his roles as Gob Bluth in the Fox/Netflix sitcom Arrested Development (2003–2006, 2013, 2018–2019) and the titular character in the Netflix animated series BoJack Horseman (2014–2020). He has received nominations for seven Primetime Emmy Awards and three Screen Actors Guild Awards.
Arnett was Emmy-nominated for his recurring role as Devon Banks in the NBC sitcom 30 Rock (2007–2013). He starred in the NBC sitcom Up All Night (2011–2012), the CBS sitcom The Millers (2013–2014), and the Netflix mystery series Murderville. He has also starred, co-created, and executive produced the Fox sitcom Running Wilde (2010–2011) and the Netflix comedy-drama series Flaked (2016–2017).
Arnett has acted in films such as Let's Go to Prison (2006), Blades of Glory (2007), Semi-Pro (2008), G-Force (2009), and Teenage Mutant Ninja Turtles (2014). Known for his deep baritone voice, Arnett also took roles in Danny Phantom (2004–2007), Ice Age: The Meltdown (2006), Ratatouille (2007), Horton Hears a Who! (2008), Monsters vs. Aliens (2009), Despicable Me (2010), The Nut Job film franchise (2014–2017), The Lego Movie franchise (2014–2019), Teen Titans Go! To the Movies (2018), Chip 'n Dale: Rescue Rangers (2022), and Twisted Metal (2023–).
Arnett has been Primetime Emmy Award-nominated for Arrested Development, 30 Rock, and BoJack Horseman. Since 2020, he has hosted the Fox reality series Lego Masters. Arnett began co-hosting the comedy podcast SmartLess (2020–) alongside Sean Hayes and Jason Bateman.
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Super Team Canada
Breakaway (voice) · (10 episodes)
2025
Next Goal Wins
Alex Magnussen
2023
Chip 'n Dale: Rescue Rangers
Sweet Pete (voice)
2022
Live in Front of a Studio Audience: The Facts of Life and Diff'rent Strokes
Dink Lockwood
2021
Muppets Haunted Mansion
The Host
2021
Dolittle
Rabbit (voice) (uncredited)
2020
Batman's A True Artist
Batman / Bruce Wayne (voice)
2014
The Lego Movie
Batman / Bruce Wayne (voice)
2014
The Arrested Development Documentary Project
Self
2013
Sesame Street: Elmo's Magic Numbers
Max the Magician
2012
Mansome
Self
2012
Despicable Me
Mr. Perkins (voice)
2010
Jonah Hex
Lieutenant Grass
2010
When in Rome
Antonio
2010
B.O.B.'s Big Break
The Missing Link (voice)
2009
Brief Interviews with Hideous Men
Subject #11
2009
G-Force
Kip Killian
2009
Spring Breakdown
Ted
2009
Mutant Pumpkins from Outer Space
The Missing Link (voice)
2009
Monsters vs Aliens
The Missing Link (voice)
2009
The Rocker
Lex
2008
Horton Hears a Who!
Vlad (voice)
2008
Semi-Pro
Lou Redwood
2008
The Comebacks
Mailman
2007
Wristcutters: A Love Story
Messiah
2007
The Brothers Solomon
John Solomon
2007
Hot Rod
Jonathan
2007
Ratatouille
Horst (voice)
2007
On Broadway
Tom
2007
Blades of Glory
Stranz Van Waldenberg
2007
Let's Go to Prison
Nelson Biederman IV
2006
RV
Todd Mallory
2006
Monster-in-Law
Kit
2005
The Great New Wonderful
Danny Keeler
2005
Series 7: The Contenders
Narrator (voice)
2001
Southie
Whitey
1998
Is This Thing On?
Alex
The Sexiest Man in Winnipeg
Narrator
2025
Snake Oil
Self - Celebrity Guest Advisor · (1 episode)
2023
Twisted Metal
Sweet Tooth (voice) · (22 episodes)
2023
SmartLess: On the Road
Self · (6 episodes)
2023
Mulligan
(voice) · (3 episodes)
2023
Who Killed Santa? A Murderville Murder Mystery
Detective Terry Seattle
2022
G'day
Louie (voice)
2022
Island of the Sea Wolves
Self - Narrator (voice) · (3 episodes)
2022
Cursed Friends
Shamrock
2022
Minions: The Rise of Gru
Mr. Perkins (voice)
2022
Our Flag Means Death
Calico Jack · (1 episode)
2022
Murderville
Detective Terry Seattle · (6 episodes)
2022
All or Nothing: Toronto Maple Leafs
Narrator · (5 episodes)
2021
The Choe Show
Self · (1 episode)
2021
Rumble
Steve (voice)
2021
Joker: Put on a Happy Face
Self
2020
The First Team
Mark Crane · (6 episodes)
2020
Stronger Together, Tous Ensemble
Self
2020
Best Wishes, Warmest Regards: A Schitt's Creek Farewell
Self
2020
Memory Hole
(7 episodes)
2020
LEGO Masters
Self - Host · (62 episodes)
2020
The Morning Show
Doug Klassen · (3 episodes)
2019
The Lego Movie 2: The Second Part
Batman (voice)
2019
The Masked Singer
Self - Guest Panelist · (2 episodes)
2019
Emmet's Holiday Party: A LEGO Movie Short
Batman (voice)
2018
Teen Titans Go! To the Movies
Slade (voice)
2018
Show Dogs
Agent Frank Nicholas
2018
GQ Presents: Iconic Characters
Self · (1 episode)
2018
UniKitty!
Batman (voice) · (1 episode)
2017
The Nut Job 2: Nutty by Nature
Surly (voice)
2017
The Guest Book
Rob · (1 episode)
2017
The Gong Show
Self - Judge · (9 episodes)
2017
One Brick at a Time: Making the LEGO Batman Movie
Self
2017
Riviera
Jeff Carter · (10 episodes)
2017
Cooking with Alfred
Batman
2017
Batman Is Just Not That Into You
Batman (voice)
2017
Dark Hoser
Batman
2017
Netflix Live
Himself
2017
The Lego Batman Movie
Batman / Bruce Wayne (voice)
2017
A Series of Unfortunate Events
Father · (8 episodes)
2017
Popstar: Never Stop Never Stopping
Main CMZ Reporter
2016
Teenage Mutant Ninja Turtles: Out of the Shadows
Vernon Fenwick
2016
Bad Internet
Martin Whistlebottom · (1 episode)
2016
Chelsea
Self · (1 episode)
2016
Flaked
Chip · (14 episodes)
2016
Full Frontal with Samantha Bee
Self · (1 episode)
2016
Being Canadian
Self
2015
The Late Show with Stephen Colbert
Self · (1 episode)
2015
Lip Sync Battle
Self · (1 episode)
2015
The Late Late Show with James Corden
Self - Guest · (1 episode)
2015
The Game Awards
Self · (1 episode)
2014
The Men In Blazers Show
Self · (1 episode)
2014
BoJack Horseman
BoJack Horseman / Butterscotch Horseman (voice) · (76 episodes)
2014
BoJack Horseman
BoJack Horseman / BoBo the Angsty Zebra (voice) · (1 episode)
2014
Teenage Mutant Ninja Turtles
Vern Fenwick
2014
The Tonight Show Starring Jimmy Fallon
Self · (1 episode)
2014
The Nut Job
Surly (voice)
2014
David Blaine: Real or Magic
Self
2013
The Millers
Nathan Miller · (34 episodes)
2013
Mistaken for Strangers
Self (uncredited)
2013
Wander Over Yonder
Ryder (voice) · (1 episode)
2013
Circus Halligalli
(1 episode)
2013
Monsters vs Aliens Stories
2013
The Arnold Palmer
Self - Host
2012
Girl & Chocolate - Pretty Sweet
Self
2012
Comedy Bang! Bang!
Dale · (1 episode)
2012
Men in Black 3
Agent AA (uncredited)
2012
Up All Night
Chris Brinkley · (35 episodes)
2011
Fight for Your Right Revisited
Biz Man
2011
Nuts & Robbers
Surly
2011
Conan
Self · (2 episodes)
2010
The Increasingly Poor Decisions of Todd Margaret
Brent Wilts · (18 episodes)
2010
Running Wilde
Steven Wilde · (13 episodes)
2010
Sit Down Shut Up
Hot Dog Vendor · (13 episodes)
2009
Sit Down Shut Up
Ennis Hofftard · (13 episodes)
2009
Parks and Recreation
Chris · (1 episode)
2009
Late Night with Jimmy Fallon
Self · (1 episode)
2009
Grindhouse
Announcer (voice) (Segment "Don't")
2007
Girl Missing
Kyle Steckler
2007
30 Rock
Devon Banks · (9 episodes)
2006
Freak Show
Duncan Schiesst · (7 episodes)
2006
Freak Show
General Winters · (7 episodes)
2006
Ice Age: The Meltdown
Lone Gunslinger Vulture (voice)
2006
The Office
Fred Henry · (1 episode)
2005
Danny Phantom
The Ghost Writer (voice) · (1 episode)
2004
Arrested Development
Gob Bluth · (84 episodes)
2003
Jimmy Kimmel Live!
Self · (3 episodes)
2003
Boston Public
Hand Salesman · (1 episode)
2000
The Acting Class
Will Bennett
2000
Third Watch
Kenny · (1 episode)
1999
The Mike O'Malley Show
Jimmy · (13 episodes)
1999
Law & Order: Special Victims Unit
Anthony Damon · (1 episode)
1999
The Waiting Game
Lenny
1999
The Sopranos
Mike Waldrup · (2 episodes)
1999
Will & Grace
Artemus Johnson · (1 episode)
1998
Sex and the City
Jack · (1 episode)
1998
The Broken Giant
Ezra Caton
1998
The View
Self · (1 episode)
1997
King of the Hill
Portis (voice) · (1 episode)
1997
Ed's Next Move
Weather Video Guy
1996
The Daily Show
Self · (1 episode)
1996
The Simpsons
Deputy Director Gratman (voice) · (1 episode)
1989
Saturday Night Live
Self - Cameo (uncredited) · (1 episode)
1975
Sesame Street
Max the Magician · (1 episode)
1969