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.
Description above from the Wikipedia article Will Arnett, licensed under CC-BY-SA, full list of contributors on Wikipedia.

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