- Butch Hartman
- original character designer / animator: main title / layout designer / sheet timer / sheet timing (156 episodes, 2001-2017)
- Matt Holtz
- model and layout clean-up artist / model and layout clean-up / clean-up artist / model and layout cleanup / layout clean-up artist (117 episodes, 2001-2017)
- Donna Zeller
- model and layout clean-up artist / clean-up artist / model and layout clean-up / additional character cleanup / model and layout cleanup (110 episodes, 2001-2015)
- Isaac Marzioli
- model and layout clean-up artist / clean-up artist / model and layout clean-up (105 episodes, 2002-2017)
- Jim Worthy
- layout designer / background layout designer / layout artist (87 episodes, 2002-2017)
- Ray Leong
- lead clean-up artist / model and layout clean-up artist / clean-up artist / layout clean-up artist (84 episodes, 2001-2015)
- Ernie Gilbert
- character designer / design supervisor / Character Designer (81 episodes, 2001-2011)
- Dan Chessher
- background painter / background painter segment: "The Big Problem" (79 episodes, 2001-2011)
- Don Kim
- animator: animation (70 episodes, 2001-2006)
- Gordon Hammond
- character designer / design supervisor (69 episodes, 2002-2015)
- Andres Nieves
- model and layout clean-up artist / clean-up artist / layout clean-up artist / model and layout clean-up / model and layout cleanup (68 episodes, 2001-2014)
- Kathryn Gilmore
- final checker (68 episodes, 2002-2011)
- Kristin Donner
- background painter / color key stylist (67 episodes, 2003-2015)
- Larry Murphy
- layout designer (65 episodes, 2001-2014)
- George Goodchild
- color stylist / design supervisor / character designer / color key stylist / clean-up artist (65 episodes, 2001-2011)
- Meg Hanna
- color stylist / assistant color key (62 episodes, 2001-2009)
- Shoshana Solomon
- model and layout clean-up artist / model and layout clean-up / lead character clean-up artist / layout clean-up artist (63 episodes, 2001-2011)
- Brian Robitaille
- animatic operator (61 episodes, 2001-2008)
- Kevin Zelch
- animatic scanner (58 episodes, 2001-2009)
- Edgar Larrazábal
- animation director / sheet timer (52 episodes, 2001-2009)
- Holly Almaguer
- color key stylist / background painter (50 episodes, 2001-2006)
- Russell Calabrese
- animation director / sheet timer (46 episodes, 2001-2009)
- David Winn
- animation director (45 episodes, 2001-2008)
- Randol Eagles
- layout designer / background layout designer / layout artist (44 episodes, 2008-2017)
- Charlene Moncrief
- final checker (44 episodes, 2011-2017)
- Juli Murphy
- sheet timer / assistant animator: main title (40 episodes, 2001-2006)
- David Brueggeman
- model and layout clean-up artist / model and layout clean-up (39 episodes, 2008-2015)
- Michelle Bryan
- sheet timer / final checker (36 episodes, 2001-2005)
- George Taylor
- background painter / background painter, segment "Class Clown" (36 episodes, 2002-2017)
- Herb Moore
- animatic supervisor (35 episodes, 2002-2009)
- Mike Dougherty
- character designer (36 episodes, 2008-2015)
- Cheng-Li 'Kelly' Chan
- color stylist / background painter (35 episodes, 2002-2015)
- Alex Deligiannis
- color stylist (33 episodes, 2008-2015)
- Marlene Robinson May
- animation director / sheet timer (31 episodes, 2001-2006)
- Bill Dunn
- color key stylist / background painter (33 episodes, 2001-2004)
- Vonnie Batson
- sheet timer (32 episodes, 2001-2004)
- Larry Leichliter
- assistant animator: main title / animation director / sheet timer (30 episodes, 2001-2006)
- Kaz Aizawa
- background painter (31 episodes, 2008-2014)
- Edgar Duncan
- layout designer (30 episodes, 2001-2004)
- Bill Exter
- final checker (28 episodes, 2002-2004)
- Jose Hernandez
- model and layout clean-up artist / model and layout clean-up (26 episodes, 2003-2014)
- Kirk Tingblad
- animation director / sheet timer (19 episodes, 2001-2008)
- Teri Shikasho
- background painter / color key stylist (20 episodes, 2001-2003)
- Bill Schwab
- character designer (20 episodes, 2002-2005)
- Nofio Pecoraro
- model and layout clean-up artist / model and layout clean-up (20 episodes, 2013-2014)
- Sean Dempsey
- animation director / sheet timer (18 episodes, 2001-2009)
- Robert Hughes
- sheet timer / animation director (19 episodes, 2001-2006)
- Debbie Baber
- sheet timer (18 episodes, 2002-2006)
- Alex Dilts
- layout designer (18 episodes, 2002-2006)
- Antoine Guilbaud
- character designer / layout artist (18 episodes, 2002-2006)
- Jill Halliday
- lip assignment (18 episodes, 2002-2006)
- Jack Heiter
- overseas supervising director (18 episodes, 2002-2006)
- John Holmquist
- main character design (18 episodes, 2002-2006)
- Pete Michels
- sheet timer (18 episodes, 2002-2006)
- Howy Parkins
- animation director (18 episodes, 2002-2006)
- Leonardo Pinero
- sheet timer (18 episodes, 2002-2006)
- Becca Ramos
- checking supervisor (18 episodes, 2002-2006)
- Mike Stribling
- sheet timer (18 episodes, 2002-2006)
- Merle Welton
- supervising checker (18 episodes, 2002-2006)
- Eirik Paye
- layout designer / character designer (18 episodes, 2008-2015)
- Sydney Sharp
- model and layout clean-up artist / model and layout clean-up (18 episodes, 2013-2014)
- Joel Fajnor
- layout designer (17 episodes, 2008-2010)
- Honore Gauthier
- background painter (16 episodes, 2002-2004)
- David Manners
- model and layout clean-up artist (16 episodes, 2003-2004)
- Niki Lopez
- color stylist (16 episodes, 2013-2015)
- Eric Bryan
- character designer / character mouth charts (15 episodes, 2001-2003)
- Wesley 'Lito' T. Paguio
- background painter / background designer (15 episodes, 2013-2015)
- Stephen Silver
- character designer / character designer: Deja Vu (14 episodes, 2001-2016)
- Cynthia McIntosh
- color key stylist (13 episodes, 2002-2003)
- Bob Treat
- sheet timer (13 episodes, 2003-2006)
- Martin Cendreda
- color stylist (13 episodes, 2013-2014)
- Jiny He
- color stylist (13 episodes, 2013-2014)
- Steve Lambe
- character designer (13 episodes, 2013-2014)
- Linda Fong
- background painter (13 episodes, 2016-2017)
- Millet Henson
- model and layout clean-up artist / model and layout clean-up (13 episodes, 2016-2017)
- Patricia Pham
- model and layout clean-up artist / model and layout clean-up (13 episodes, 2016-2017)
- Maria Konwicka
- checker (12 episodes, 2003-2006)
- Kitty Schoentag
- checker (12 episodes, 2003-2006)
- Jeremiah Alcorn
- character designer (12 episodes, 2013-2014)
- Benjamin Anders
- character designer (12 episodes, 2016-2017)
- Julia Rothenbuhler-Garcia
- color stylist (12 episodes, 2016-2017)
- Steve Christian
- background scanning (11 episodes, 2001)
- Stephen Lewis
- layout designer (11 episodes, 2001)
- Ken Bruce
- sheet timer / final checker (11 episodes, 2002-2004)
- Dean Heezen
- character designer (11 episodes, 2016-2017)
- Barbara Dourmaskin-Case
- sheet timer (10 episodes, 2001-2014)
- Keiko Murayama
- background painter (10 episodes, 2013-2014)
- Jessie Seely
- color stylist (10 episodes, 2016-2017)
- Tom Yasumi
- animation director / sheet timer (9 episodes, 2001-2006)
- Olga Gerdjikov
- layout designer (9 episodes, 2013-2014)
- Fred Miller
- animation director (8 episodes, 2001-2002)
- Kevin Petrilak
- sheet timer (8 episodes, 2003-2004)
- Bob Boyle
- character designer / design supervisor / layout designer (6 episodes, 2001-2003)
- Karen Shaffer
- final checker (7 episodes, 2001)
- Nadia Vurbenova
- background painter (7 episodes, 2001)
- Charlie Cooper
- sheet timer (7 episodes, 2002)
- Samuel Agro
- background layout designer (7 episodes, 2017)
- Greg Araya
- animator (7 episodes, 2017)
- Andy Arett
- animator (7 episodes, 2017)
- Faruk Cemalovic
- character designer (7 episodes, 2017)
- Sam Chi
- animator (7 episodes, 2017)
- David Gerhard
- animator (7 episodes, 2017)
- Andre Guindi
- animator (7 episodes, 2017)
- Nicole Kozak
- animator (7 episodes, 2017)
- Stephen Sawran
- animator (7 episodes, 2017)
- Craig Simmons
- character design supervisor (7 episodes, 2017)
- Shawn Toshikian
- assistant animator (7 episodes, 2017)
- Michelle Tripp
- animation director (7 episodes, 2017)
- Marcus Velazquez
- clean-up artist (7 episodes, 2017)
- Andrew Wolf
- animation layout supervisor / animation layout team (7 episodes, 2017)
- Jeffrey Zikry
- animator (7 episodes, 2017)
- Gary Conrad
- sheet timer (6 episodes, 2001-2004)
- Phil Cummings
- sheet timer (6 episodes, 2001)
- Dana Granger
- additional character cleanup (6 episodes, 2001)
- Gary Hall
- final checker (6 episodes, 2001)
- Maureen Mascarina
- additional character cleanup (6 episodes, 2001)
- Andy Suriano
- character designer / lead character designer (6 episodes, 2001)
- Howard E. Baker
- overseas supervising director (6 episodes, 2002)
- Hye-Jung Kim
- color key stylist (6 episodes, 2003-2004)
- Bradley J. Gake
- layout designer (6 episodes, 2013-2014)
- Matt Allen
- background painter / color stylist (6 episodes, 2017)
- Parker Bryant
- background painter / color stylist (6 episodes, 2017)
- Rob Bryson
- background layout supervisor (6 episodes, 2017)
- Tim Deacon
- background layout designer / background layout supervisor (6 episodes, 2017)
- Vanessa Del Priore
- animation layout team (6 episodes, 2017)
- Daniella Demysh
- character designer / posing team (6 episodes, 2017)
- Geoff Donovan
- background painter (6 episodes, 2017)
- Matias Hannecke
- background painter / color stylist (6 episodes, 2017)
- Chad Hicks
- design supervisor (6 episodes, 2017)
- Ed Lee
- background layout designer / background layout supervisor (6 episodes, 2017)
- Darnell Lysius-Dicette
- character designer (6 episodes, 2017)
- Steve Manning
- background layout designer / background layout supervisor (6 episodes, 2017)
- Michael Rainsberry
- animation layout team / model and layout cleanup / model and layout cleanup/breaking team / model and layout cleanup/breakup team (6 episodes, 2017)
- November Rush
- background layout designer / background layout supervisor (6 episodes, 2017)
- Danny Setna
- background layout designer / background layout supervisor (6 episodes, 2017)
- Martin Smith
- background painter / color stylist (6 episodes, 2017)
- Phillip Williams
- character designer (6 episodes, 2017)
- Sarah Frost
- sheet timer / final checker (5 episodes, 2001-2003)
- Lindsey Pollard
- sheet timer / animation director (5 episodes, 2001-2003)
- Sarah Baril
- animator (5 episodes, 2017)
- Brentton Barkman
- posing team (5 episodes, 2017)
- Leanne Benner
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (5 episodes, 2017)
- Tara Blair
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (5 episodes, 2017)
- Sean Branigan
- animation lead (5 episodes, 2017)
- Maneerat Bunchoo
- animation supervisor (5 episodes, 2017)
- Paul Caron
- animator (5 episodes, 2017)
- Matthew Cemalovic
- animator (5 episodes, 2017)
- Clement Chan
- animator (5 episodes, 2017)
- Jason Clarke
- vfx designer/animator (5 episodes, 2017)
- Darren Donovan
- flash fx supervisor / vfx designer/animator (5 episodes, 2017)
- Gerry Duchemin
- animator (5 episodes, 2017)
- LeighAnna Frostad
- posing team (5 episodes, 2017)
- Bojan Gligorevic
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (5 episodes, 2017)
- Sharon Kim
- model and layout cleanup/breaking supervisor (5 episodes, 2017)
- Kezia Ma
- posing team (5 episodes, 2017)
- Doug Macklin
- model and layout cleanup/breaking supervisor (5 episodes, 2017)
- Amanda Martin
- posing supervisor (5 episodes, 2017)
- Timothy Martin
- animator (5 episodes, 2017)
- Mike McKay
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (5 episodes, 2017)
- Shannon Mistry
- animator (5 episodes, 2017)
- Sean Nasmith
- animator (5 episodes, 2017)
- Raoul Olou
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (5 episodes, 2017)
- Dharmali Patel
- posing team (5 episodes, 2017)
- Kamonthep Phungurai
- animator (5 episodes, 2017)
- Jens Pindal
- animator (5 episodes, 2017)
- Martin Ros
- animator (5 episodes, 2017)
- Ricky Silva
- animator (5 episodes, 2017)
- Jeffrey Size
- posing team (5 episodes, 2017)
- Evan Steacy
- animator (5 episodes, 2017)
- Haley Rose Szereszewski
- posing team (5 episodes, 2017)
- Meghan Taylor
- animator (5 episodes, 2017)
- Kareem Thompson
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (5 episodes, 2017)
- Quinn Thompson
- model and layout cleanup/breakup team / model and layout cleanup/breaking team (5 episodes, 2017)
- James Walsh
- posing supervisor (5 episodes, 2017)
- Darren Ward
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (5 episodes, 2017)
- Shannon Tindle
- character designer / character designer: Deja Vu (4 episodes, 2001)
- Justin 'Dusty' Wakefield
- clean-up artist / layout clean-up artist / model and layout cleanup (4 episodes, 2001)
- Daniel de la Vega
- sheet timer (4 episodes, 2005-2006)
- Francis Giglio
- background painter (4 episodes, 2014-2015)
- Ken Lai
- model and layout cleanup/breaking team / model and layout cleanup/breakup team (4 episodes, 2017)
- Richard Ziehler-Martin
- background painter (3 episodes, 2001)
- Andrew Gentle
- character designer / layout designer (3 episodes, 2002-2014)
- Mike Kurinski
- background painter (3 episodes, 2002)
- Sean Charmatz
- model and layout clean-up artist (3 episodes, 2005-2006)
- Michael Allen
- character designer (3 episodes, 2005)
- Ernie Ochoa
- character designer / prop designer (3 episodes, 2016)
- Sheldon Arnst
- overseas supervisor (2 episodes, 2001)
- Joseph Holt
- layout designer (2 episodes, 2001)
- Steven Kellams
- background scanning (2 episodes, 2001)
- Eric Stanton
- background scanning (2 episodes, 2001)
- Ken Boyer
- sheet timer (2 episodes, 2002-2014)
- Mark Christiansen
- character designer (2 episodes, 2002-2014)
- David Cutler
- layout artist (2 episodes, 2002-2014)
- Tom Foxmarnick
- background painter (2 episodes, 2002-2014)
- Jeff Hall
- sheet timer (2 episodes, 2002-2014)
- Gordon Kent
- sheet timer (2 episodes, 2002-2014)
- Fred Kim
- background painter (2 episodes, 2002-2014)
- Jim Stenstrum
- character designer (2 episodes, 2002-2014)
- Nathan Chew
- sheet timer (2 episodes, 2002)
- Brent Gordon
- character designer (2 episodes, 2002)
- Don Judge
- sheet timer (2 episodes, 2002)
- Jerry Richardson
- background painter / color key stylist (2 episodes, 2002)
- Benjamin Balistreri
- character designer (2 episodes, 2003-2004)
- Dave Lyman
- sheet timer (2 episodes, 2003)
- Dustin D'Arnault
- character designer / prop designer (2 episodes, 2016)
- Jerilyn Dever
- sheet timer (1 episode, 2001)
- Jaime Diaz
- sheet timing (1 episode, 2001)
- Greg Gibbons
- additional background painter (1 episode, 2001)
- Tom MacDougall
- maquette sculptor (1 episode, 2001)
- Gary Mouri
- background painter (1 episode, 2001)
- Kathleen Quaife-Hodge
- final checker (1 episode, 2001)
- Don Spencer
- character clean-up (1 episode, 2001)
- Debbie Du Bois
- background painter (1 episode, 2002)
- Ron Myrick
- animation director (1 episode, 2002)
- Frank Rocco
- character designer (1 episode, 2002)
- David Gregory
- background painter (1 episode, 2003)
- Steve C. Meyers
- layout designer (1 episode, 2003)
- Rob Renzetti
- layout designer (1 episode, 2003)
- Ricky Santana
- sheet timer (1 episode, 2003)
- Pauline Sim
- color key stylist (1 episode, 2003)
- James T. Walker
- sheet timer (1 episode, 2003)
- Maxwell Atoms
- character designer (1 episode, 2004)
- Brandon Kruse
- character designer (1 episode, 2008)
- Myungseon Baek
- background: Yeson Entertainment (1 episode, 2009)
- Soonyeop Cho
- coloring: Yeson Entertainment (1 episode, 2009)
- Youngoh Park
- inbetweener: Yeson Entertainment (1 episode, 2009)
- Gwangsun Young
- scanning: Yeson Entertainment (1 episode, 2009)
- Anthony Agrusa
- key animator (uncredited) (3 episodes, 2003)
- Horseman Cao
- animation director (uncredited) (3 episodes, 2003)
- Phat Ejercitado
- key animator (uncredited) (3 episodes, 2003)
- Tino Guanlao
- animation director (uncredited) (3 episodes, 2003)
- Ric Jamlig
- key animator (uncredited) (3 episodes, 2003)
- Abe Legaspi
- key animator (uncredited) (3 episodes, 2003)
- Marco Plantilla
- key animator (uncredited) (3 episodes, 2003)
- Melvin Silao
- key animator (uncredited) (3 episodes, 2003)
- Nathan Walrath
- animation director (uncredited) (3 episodes, 2003)
- Ricky Yoingco
- key animator (uncredited) (3 episodes, 2003)
- Rob Gibbs
- animator: animation (uncredited) (2 episodes, 2001)
- Eugene Mattos
- guest animator (uncredited) (1 episode, 2003)
- Michael Rann
- guest animator (uncredited) (1 episode, 2003)
- Lin-Z Rogers
- checker Klasky Csupo (uncredited) (1 episode, 2003)
- Ed Baker
- storyboard artist (uncredited) (1 episode, 2011)
