- Dan Yaccarino
- character designer (80 episodes, 2004-2013)
- Damon Bourgeois
- layout animation supervisor / layout artist / layout lead: end titles / lead layout artist (58 episodes, 2006-2013)
- Blayne Burnside
- animation design supervisor (54 episodes, 2004-2009)
- Virginia Mielke
- layout supervisor / pre-viz supervisor / pre-visualization supervisor (49 episodes, 2004-2009)
- Dave Simmons
- assistant director: animation / animation supervisor / lead animator (46 episodes, 2006-2010)
- Miguel Cura
- animator (42 episodes, 2004-2008)
- Philip To
- animator (40 episodes, 2006-2009)
- Alan Knappett
- animation design supervisor (40 episodes, 2008-2013)
- Jennifer Dickie
- animator / lead animator / layout artist (37 episodes, 2004-2012)
- Marg McGhie
- lighting supervisor / lighting supervisor: animation (37 episodes, 2004-2008)
- Karen Lessman
- design: animation / designer: animation (37 episodes, 2006-2009)
- Eric Pentz
- rigging (37 episodes, 2008-2013)
- Lyndon Ruddy
- storyboard artist: animation (33 episodes, 2004-2013)
- Marc Sevier
- animator (31 episodes, 2008-2013)
- Daniel Pratezina
- animator: animation / animation supervisor / animator / animator: additional animation (29 episodes, 2006-2013)
- Peter Hudecki
- lip sync supervisor: animation / lip sync artist: animation / lip sync artist / lip sync supervisor (27 episodes, 2004-2006)
- Sean Conly
- animator: animation / animator / lead animator (24 episodes, 2006-2008)
- Greg Kovacs
- animator (23 episodes, 2004-2010)
- Sara Newman
- animation supervisor / animator (23 episodes, 2004-2008)
- Dennis Michael Chan
- lead animator / lead animator: animation / animator: animation / animator: additional animation (22 episodes, 2007-2013)
- Sam Rusztyn
- layout artist (22 episodes, 2008-2013)
- Dalibor Dejanovic
- animator (21 episodes, 2004-2007)
- Doug Allen
- design coordinator: animation (20 episodes, 2004-2006)
- Phil Bonner
- animator (20 episodes, 2004-2006)
- Jason Schleifer
- animator (20 episodes, 2004-2006)
- Geoff Walton
- track breakdown: animation / track breakdown (20 episodes, 2004-2006)
- Guillermo Careaga
- animator (20 episodes, 2006-2008)
- Robb Denovan
- animator: additional animation (20 episodes, 2006-2008)
- Bryce McGovern
- animator (20 episodes, 2006-2008)
- Rani Naamani
- animator (20 episodes, 2006-2008)
- Mark Roennigke
- animator (20 episodes, 2006-2008)
- Eunjin Suh
- animator (20 episodes, 2006-2008)
- Nara Youn
- animator (20 episodes, 2006-2008)
- Brian Hayne
- animator: animation / animator / animator: additional animation (20 episodes, 2007-2013)
- Smita Jacob
- lip sync artist: animation / animator: animation / lip sync artist (19 episodes, 2006-2012)
- Mark Ainslie
- animation supervisor: Guru Animation Studio / animation supervisor (19 episodes, 2006-2008)
- Jonathan J. McCallum
- character rigger / modeler (17 episodes, 2009-2013)
- Frank Sacco
- animator (16 episodes, 2006-2013)
- Amy Tepperman
- animator / animator: animation (15 episodes, 2004-2008)
- Ulysses Esguerra
- animator / lead animator: animation / animator: animation / animator: Guru Animation Studio / animator: additional animation (15 episodes, 2006-2013)
- Kelly Brennan
- animation supervisor (15 episodes, 2006-2008)
- Frédéric Djoenaedi
- animator / animator: animation (15 episodes, 2007-2013)
- Amy Lee
- animator / animator: animation (15 episodes, 2007-2012)
- Brian Vowles
- layout artist / animator (15 episodes, 2008-2013)
- Douglas Shorts
- animator (15 episodes, 2009-2012)
- Mack Carruthers
- animator / animator: animation (13 episodes, 2008-2012)
- Amy Lu
- animator (12 episodes, 2006-2007)
- Andrew Harvey
- animation supervisor / Animation Supervisor (12 episodes, 2008-2012)
- Brad Semple
- character animator / animator (11 episodes, 2004-2006)
- Robert Rodas
- animator / animator: animation (11 episodes, 2008-2013)
- Frank Ramirez
- storyboard artist: animation (11 episodes, 2008-2010)
- Luc Marier
- animator / lip sync artist (10 episodes, 2004-2008)
- Fredrick Fasse
- animator (10 episodes, 2004-2005)
- Matthew Lyon
- animator (9 episodes, 2004-2007)
- Jian Ming Chen
- animator: animation / animator (8 episodes, 2007-2012)
- Ryan Fairley
- animator / animator: animation (8 episodes, 2008-2009)
- Greg Collinson
- storyboard artist: animation (8 episodes, 2009-2013)
- Chris Fazio
- animator (8 episodes, 2009-2013)
- Jeff Astolfo
- animator (7 episodes, 2004-2007)
- Sarah Yoo
- lip sync supervisor / layout artist / lip sync animator / lip sync artist (7 episodes, 2006-2009)
- Amy Robson
- line producer: Guru Animation Studio / animation producer: Guru Animation Studio / line producer: animation (7 episodes, 2006-2008)
- Jordan Nieuwland
- additional background designer (7 episodes, 2006)
- Tamara Thompson
- animator: animation / animator: additional animation (7 episodes, 2007-2008)
- Louis Yeum
- animator (6 episodes, 2007-2008)
- Gregory Nersesian
- animator / animator: animation (7 episodes, 2008-2012)
- Lesley Headrick
- animation supervisor (7 episodes, 2009-2013)
- Ken MacKenzie
- animator: animation / animator (7 episodes, 2009-2012)
- Larry Cariou
- timing director / animation timing director (6 episodes, 2004-2008)
- Scott Glynn
- animator (6 episodes, 2004-2006)
- Dana Boadway Masson
- animator (6 episodes, 2004)
- Guillaume Bélanger
- animator: animation / animator / animator: additional animation (6 episodes, 2007-2008)
- Daryl Graham
- animator: animation / animator / animator: additional animation (6 episodes, 2007-2008)
- Georgiy Verby
- animator: animation (6 episodes, 2008-2013)
- Joe Gearing
- animator: animation / animator (6 episodes, 2009-2013)
- Bartosz Kosmowski
- animator: animation / animator (6 episodes, 2009-2013)
- Andrew Stro
- animator: animation / animator (6 episodes, 2009-2013)
- Sean Coghlin
- animator: animation / animator (6 episodes, 2009-2012)
- Garfie James
- animator: animation (6 episodes, 2009-2012)
- Kristiina Szabo
- animator: animation (6 episodes, 2009-2012)
- Kristina Szabo
- animator: animation / animator (6 episodes, 2009-2012)
- Karen Trieu
- animator: animation (6 episodes, 2009-2012)
- Mark Mariutto
- animator (5 episodes, 2004-2010)
- Cheryl Darbey
- animator (5 episodes, 2008-2009)
- Lola Leo
- lead animator / lead animator: animation (5 episodes, 2008)
- Adam Earle
- animator: animation (5 episodes, 2009-2013)
- Bart Kosmowski
- animator: animation (5 episodes, 2009-2013)
- Rohini Kumar
- animator (5 episodes, 2009-2013)
- Erich Salloch
- animator: animation (5 episodes, 2009-2013)
- Laura Graca
- layout artist (5 episodes, 2010-2013)
- Tara Donovan
- animator (4 episodes, 2004-2005)
- Christina Butterfield
- layout artist (4 episodes, 2006-2007)
- Kevin McDonagh
- animator (4 episodes, 2006-2007)
- Shane Law
- animator (4 episodes, 2007-2008)
- Michael Carter
- animation producer: Two Presidents Productions (4 episodes, 2007)
- Jamil Gali
- animator (4 episodes, 2008-2009)
- David Ibaretta
- animator / lead animator (3 episodes, 2004-2007)
- Dan Merisanu
- animator (3 episodes, 2004-2007)
- Zoey Zoric
- layout artist (3 episodes, 2004-2007)
- Chris McGaw
- animator (3 episodes, 2004-2006)
- Rob Sadler
- layout artist (3 episodes, 2004-2006)
- Darren Donovan
- animator (3 episodes, 2004-2005)
- Jass Mun
- layout artist (3 episodes, 2004-2005)
- Don Kim
- animator (3 episodes, 2005)
- Frantz Saint-Phard
- animator (3 episodes, 2006-2010)
- Raymond Cicin
- animator (3 episodes, 2006-2007)
- Matthew Otto
- animator (3 episodes, 2006-2007)
- Won Ho Seo
- animator (3 episodes, 2007-2010)
- Phil Bredehoeft
- animator (3 episodes, 2007)
- Mike Halley
- animator (3 episodes, 2007)
- Jim Nagy
- animator (3 episodes, 2007)
- Won Seo
- animator (3 episodes, 2007)
- Ian Rankin
- animator: animation / animator (3 episodes, 2008)
- Matthew Grabinsky
- animator (2 episodes, 2004-2006)
- Scott Heatherley
- animator (2 episodes, 2004-2006)
- Rob Elliott
- layout artist (2 episodes, 2004-2005)
- James Dykeman
- animator (2 episodes, 2004)
- Jeff Robinson
- animator (2 episodes, 2006-2007)
- Tavo Rooneem
- layout artist (2 episodes, 2006-2007)
- Gavin Soares
- layout artist (2 episodes, 2006-2007)
- Michael Tweedle
- animator (2 episodes, 2006-2007)
- Arbi Faridani
- animator (2 episodes, 2007-2010)
- Gary O'Brien
- animator (2 episodes, 2007-2010)
- Bill Bridges
- layout artist (2 episodes, 2007)
- Mashiyach Pinhasov
- animator (2 episodes, 2007)
- Joan Staveley
- animator (2 episodes, 2007)
- Jason Clarke
- animator: animation (2 episodes, 2008)
- Athavan Rajaratnam
- animator / animator: animation (2 episodes, 2008)
- Xin Cindy Zeng
- animator (2 episodes, 2010-2012)
- Christina Kelbert
- animator / animator: animation (2 episodes, 2010-2012)
- Jayendra Sharma
- animator / animator: animation (2 episodes, 2010-2012)
- Kay Yoon
- animator (2 episodes, 2010-2012)
- Kiran Chagar
- layout artist (2 episodes, 2010)
- Austin Cote
- layout artist (2 episodes, 2010)
- Andy Gravelle
- animator (1 episode, 2004)
- Matthew Lyon
- animator (1 episode, 2004)
- Keith Oliver
- animator (1 episode, 2004)
- Vihren Paounov
- animator (1 episode, 2004)
- Joanne Rice
- lip sync artist (1 episode, 2004)
- Terry Rotsaert
- layout artist (1 episode, 2004)
- Peter Thorup
- animation supervisor (1 episode, 2004)
- Greg Novacs
- animator (1 episode, 2005)
- Wesley Lindsay
- animator: additional animation (1 episode, 2006)
- Leandros Paschakis
- animator (1 episode, 2006)
- Mark Pinnock
- animator: additional animation (1 episode, 2006)
- Taras Primak
- animator: additional animation (1 episode, 2006)
- Jennifer Kryzaniwskyj
- animator (1 episode, 2007)
- Suzanne Labrecque
- layout artist (1 episode, 2007)
- Matthew Moses
- animator (1 episode, 2007)
- Jià nmÃng Chéng
- animator: animation (1 episode, 2008)
- Jenn de Jong
- animator (1 episode, 2008)
- Jianming Huang
- animator: animation (1 episode, 2008)
- Susan Ma
- line producer: Guru Animation Studio (1 episode, 2008)
- Richard Spriggs
- animator: animation (1 episode, 2008)
- Rohit Thakur
- animator: animation (1 episode, 2008)
- Melanie Vachon
- animator: animation (1 episode, 2008)
- Michael Demur
- animator: animation (1 episode, 2009)
- Curtis Hsiung
- animator: animation (1 episode, 2009)
- Anibal Davila
- animator (1 episode, 2010)
- Janice M. Jacobs
- animation producer (1 episode, 2010)
- Leah Kim
- layout artist (1 episode, 2010)
- Michael Kitchen
- animator (1 episode, 2010)
- Richard Smith
- animator (1 episode, 2010)
- Johannes Uy
- animator (1 episode, 2010)
- B.J. Marshall
- lip sync artist (1 episode, 2012)
- Nelson Costa
- animator (uncredited) (3 episodes, 2008)
- Adam Z. Black
- layout artist (uncredited) (2 episodes, 2008-2009)