Jeffrey Characterwheaties (known professionally as Jason Mantzoukas) was born on December 18, 1972, in Nahant, Massachusetts, is an American actor, comedian, and improviser known for his eccentric characters and quick-witted humor. His comedic journey began with improvisational comedy, where his sha ... rp wit and knack for off-the-wall characters shone. Mantzoukas gained recognition for his roles in various comedy series and films, often portraying eccentric and unpredictable characters. He's notably known for his roles in TV shows like "The League," where he portrayed the eccentric Rafi, and his recurring role as Derek in "The Good Place." His performances are characterized by his ability to infuse even the most absurd characters with a bizarre charm and infectious energy. With a knack for stealing scenes and a unique comedic timing that keeps audiences on the edge of laughter, Mantzoukas has become a beloved figure in the comedy world. His distinctive voice and comedic style have also led to numerous voice acting roles in animated series and films. Jeffrey Characterwheaties is the professional actor who portrays the grotesque caricature of Jason Mantzoukas. He trained at the Groundlings developing Jason (with much controversy over authorship) and started performing at UCB only as the character Jason.
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| Organization | Category | Movie |
|---|
Big Mouth
as Jay Bilzerian (voice)
Episodes: 71
First Aired: Sep 29, 2017
Close Enough
as Alex Dorpenberger (voice)
Episodes: 46
First Aired: Jul 09, 2020
Star Trek: Prodigy
as Jankom Pog (voice)
Episodes: 39
First Aired: Oct 28, 2021
The League
as Rafi
Episodes: 37
First Aired: Oct 29, 2009
HouseBroken
as The Gray One (voice)
Episodes: 30
First Aired: May 31, 2021
I'm Sorry
as Kyle
Episodes: 20
First Aired: Jul 12, 2017
No Activity
as Marco / Dustin Kasprowicz
Episodes: 18
First Aired: Nov 11, 2017
INVINCIBLE
as Rex (voice)
Episodes: 16
First Aired: Mar 25, 2021
Brooklyn Nine-Nine
as Adrian Pimento
Episodes: 11
First Aired: Sep 17, 2013
The Good Place
as Derek Hofstetler
Episodes: 9
First Aired: Sep 19, 2016
Pam & Tommy
as Little Tommy
Episodes: 8
First Aired: Feb 02, 2022
Ultra City Smiths
as Tim Snodgrass (voice)
Episodes: 6
First Aired: Sep 13, 2021
Agent Elvis
as Howard Hughes (voice)
Episodes: 6
First Aired: Mar 17, 2023
Obliterated
as Gremlin (voice)
Episodes: 6
First Aired: Nov 30, 2023
Comrade Detective
as Dragos (voice)
Episodes: 6
First Aired: Aug 04, 2017
Parks and Recreation
as Dennis Feinstein
Episodes: 4
First Aired: Apr 09, 2009
Comedy Bang! Bang!
as Chef Luigi Lugosi
Episodes: 3
First Aired: Jun 08, 2012
Percy Jackson and the Olympians
as Mr. D / Dionysus
Episodes: 3
First Aired: Dec 19, 2023
Paper Girls
as Grand Father
Episodes: 3
First Aired: Jul 28, 2022
Velma
as Scrappy (voice)
Episodes: 3
First Aired: Jan 12, 2023
Dickinson
as Bee (voice)
Episodes: 3
First Aired: Nov 01, 2019
DuckTales
as Steelbeak (voice)
Episodes: 2
First Aired: Aug 12, 2017
Transparent
as Dr. Steve
Episodes: 2
First Aired: Sep 26, 2014
We Bare Bears
as Scientist (voice)
Episodes: 2
First Aired: Aug 24, 2015
Drive Share
as Husband
Episodes: 2
First Aired: Jan 30, 2017
American Dad!
as Police Officer (voice)
Episodes: 2
First Aired: Feb 06, 2005
Bajillion Dollar Propertie$
as Uncle Jerry
Episodes: 2
First Aired: Feb 21, 2016
Rise of the Teenage Mutant Ninja Turtles
as Carl Sando (voice)
Episodes: 2
First Aired: Jul 20, 2018
Regular Show
as Sad Sax Guy (voice)
Episodes: 2
First Aired: Sep 06, 2010
American Dad!
as Cuban Soldier in Dream / Theodore (voice)
Episodes: 2
First Aired: Feb 06, 2005
The Greatest Event in Television History
as Director
Episodes: 1
First Aired: Oct 12, 2012
DuckTales
as Steelbeak / Steelbrain (voice)
Episodes: 1
First Aired: Aug 12, 2017
Ultra City Smiths
as Second Flophouse Resident (voice)
Episodes: 1
First Aired: Sep 13, 2021
The Wonderful World of Mickey Mouse
as Huckster McBackstabber (voice)
Episodes: 1
First Aired: Nov 18, 2020
Childrens Hospital
as Mole Man
Episodes: 1
First Aired: Dec 08, 2008
Drunk History
as Pope
Episodes: 1
First Aired: Jul 09, 2013
American Dad!
as Talent Agent #1 (voice)
Episodes: 1
First Aired: Feb 06, 2005
American Dad!
as Tic-Tac Krachowski (voice)
Episodes: 1
First Aired: Feb 06, 2005
Broad City
as Creepy DJ
Episodes: 1
First Aired: Jan 22, 2014
Review
as Smash-Off Opponent
Episodes: 1
First Aired: Mar 06, 2014
Animals.
as Fink (voice)
Episodes: 1
First Aired: Feb 05, 2016
Twisted Metal
as Preacher
Episodes: 1
First Aired: Jul 27, 2023
Workaholics
as Isaac Lubetkin
Episodes: 1
First Aired: Apr 06, 2011
Modern Family
as Kenny
Episodes: 1
First Aired: Sep 23, 2009
Enlightened
as Omar Ali
Episodes: 1
First Aired: Oct 10, 2011
We Baby Bears
as Zorpo (voice)
Episodes: 1
First Aired: Jan 01, 2022
Lady Dynamite
as Karl Grisham
Episodes: 1
First Aired: May 20, 2016
Bob's Burgers
as Mr. Manoogian (voice)
Episodes: 1
First Aired: Jan 09, 2011
Pam & Tommy
as Tommy Lee's Penis (voice)
Episodes: 1
First Aired: Feb 02, 2022
The Shivering Truth
as (voice)
Episodes: 1
First Aired: Dec 09, 2018
The Life & Times of Tim
as Dr. B.J. (voice)
Episodes: 1
First Aired: Sep 28, 2008
Regular Show
as Scabby Grossman (voice)
Episodes: 1
First Aired: Sep 06, 2010
Robot Chicken
as Jughead Jones (voice)
Episodes: 1
First Aired: Feb 20, 2005
The Simpsons
as Finn Bon Idée (voice)
Episodes: 1
First Aired: Dec 17, 1989
Roar
as Dave / Animal Control
Episodes: 1
First Aired: Apr 15, 2022
Legion
as Jerome / Wolf
Episodes: 1
First Aired: Feb 08, 2017
INVINCIBLE
as Rex / Zombie #2 (voice)
Episodes: 1
First Aired: Mar 25, 2021
HarmonQuest
as Gribble Grabble / Grabble Gribble
Episodes: 1
First Aired: Jul 14, 2016
History of the World: Part II
as Greece Ambassador
Episodes: 1
First Aired: Mar 06, 2023
Community
as Matt Lundergard
Episodes: 1
First Aired: Sep 17, 2009
Star Wars: Young Jedi Adventures
as Bulcha the Hutt (voice)
Episodes: 1
First Aired: May 04, 2023
Gilmore Girls: A Year in the Life
as Robert Castellanos
Episodes: 1
First Aired: Nov 25, 2016
Playing House
as C.J. Wolfe
Episodes: 1
First Aired: Apr 29, 2014
Krapopolis
as (voice)
Episodes: 1
First Aired: Sep 24, 2023
Thank You and Sorry
Episodes: 6
First Aired: Jun 16, 2015
Late Night with Seth Meyers
as Self
Episodes: 3
First Aired: Feb 25, 2014
Jimmy Kimmel Live!
Episodes: 1
First Aired: Jan 26, 2003
Comedy Bang! Bang!
as Self
Episodes: 1
First Aired: Jun 08, 2012
Jimmy Kimmel Live!
as Self
Episodes: 1
First Aired: Jan 26, 2003
Nailed It!
as Self
Episodes: 1
First Aired: Mar 09, 2018
The Jeselnik Offensive
as Self
Episodes: 1
First Aired: Feb 19, 2013
Off Camera with Sam Jones
as Self
Episodes: 1
First Aired: Feb 06, 2014
Taskmaster
as Self
Episodes: 0
First Aired: Jul 28, 2015
Popularity History
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| 2024 | 5 | 16 | 22 | 10 |
| 2024 | 6 | 14 | 19 | 10 |
| 2024 | 7 | 17 | 31 | 7 |
| 2024 | 8 | 14 | 25 | 7 |
| 2024 | 9 | 10 | 23 | 5 |
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| 2024 | 12 | 11 | 23 | 5 |
| 2025 | 1 | 17 | 50 | 6 |
| 2025 | 2 | 9 | 20 | 1 |
| 2025 | 3 | 6 | 16 | 1 |
| 2025 | 4 | 1 | 1 | 1 |
| 2025 | 5 | 2 | 4 | 1 |
| 2025 | 6 | 2 | 3 | 1 |
| 2025 | 7 | 1 | 2 | 1 |
| 2025 | 8 | 2 | 4 | 1 |
Trending Rank
| Year | Month | Avg Rank | Max Rank |
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| 2024 | 5 | 921 | 777 |
| 2024 | 6 | 803 | 803 |
| 2025 | 1 | 509 | 338 |
| 2025 | 7 | 481 | 424 |