 | Christopher McCulloch | ... | Hank Venture / ... (41 episodes, 2003-2008) |

| James Urbaniak | ... | Dr. Venture / ... (40 episodes, 2003-2008) |

| Patrick Warburton | ... | Brock Samson / ... (39 episodes, 2003-2008) |
 | Michael Sinterniklaas | ... | Dean Venture / ... (38 episodes, 2003-2008) |
 | Doc Hammer | ... | Henchman 21 / ... (33 episodes, 2004-2008) |
 | Soul-Bot | ... | H.E.L.P.eR. (23 episodes, 2003-2008) |
 | Steven Rattazzi | ... | Dr. Orpheus / ... (21 episodes, 2004-2008) |

| Lisa Hammer | ... | Triana Orpheus / ... (16 episodes, 2003-2008) |
 | Paul Boocock | ... | Dr. Jonas Venture / ... (15 episodes, 2004-2008) |

| Mia Barron | ... | Molotov Cocktease / ... (12 episodes, 2004-2008) |

| Dana Snyder | ... | The Alchemist / ... (9 episodes, 2006-2008) |

| Nina Hellman | ... | Kim / ... (9 episodes, 2004-2008) |
 | Charles Parnell | ... | Jefferson Twilight / ... (8 episodes, 2004-2008) |
 | Brendon Small | ... | Jonny Quest / ... (8 episodes, 2006-2008) |
 | Joanna Adler | ... | Myra Brandish / ... (5 episodes, 2006-2008) |

| T. Ryder Smith | ... | Baron Ünderbheit / ... (4 episodes, 2004-2006) |
 | Richard Liebmann-Smith | ... | Mexican University Administrator / ... (3 episodes, 2003-2004) |
 | Stephen Colbert | ... | Professor Impossible (2 episodes, 2004-2006) |
 | Terrence Fleming | ... | Col. Bud Manstrong (2 episodes, 2004-2006) |
 | Stephen DeStefano | ... | Dr. Entmann / ... (2 episodes, 2008) |
 | Toby Huss | ... | General Treister / ... (2 episodes, 2008) |
 | H. Jon Benjamin | ... | The Master (2 episodes, 2006) |
 | Suzanne Gilad | ... | Patty / ... (2 episodes, 2006) |
|
| Christopher McCulloch | .... | executive producer (41 episodes, 2003-2008) |
| Rachel Simon | .... | producer / associate producer / ... (38 episodes, 2004-2008) |
| Steven S.H. Yoon | .... | executive producer: Digital eMation / executive producer (37 episodes, 2004-2008) |
| Nathan Graf | .... | associate producer (27 episodes, 2003-2006) |
| David Lipson | .... | producer (15 episodes, 2003-2004) |
| Jeremy Rosenberg | .... | supervising producer / associate producer (14 episodes, 2004-2006) |
| Keith Crofford | .... | executive producer: Williams Street (13 episodes, 2008) |
| Michael Lazzo | .... | executive producer: Williams Street (13 episodes, 2008) |
| Charlie Miller | .... | executive producer / supervising producer (13 episodes, 2008) |
| Jeffrey Nodelman | .... | supervising producer (12 episodes, 2003-2004) |
| |
|
| Marina Dominis-Dunnigan | .... | color supervisor / color director (27 episodes, 2003-2006) |
| Peter Brown | .... | background painter (26 episodes, 2004-2006) |
| Jonathan Roscetti | .... | storyboard artist / storyboard revisionist (24 episodes, 2004-2006) |
| Douglas Lovelace | .... | storyboard revision supervisor / storyboard artist (23 episodes, 2004-2006) |
| Rick Lacy | .... | storyboard artist / storyboard revisionist (17 episodes, 2004-2006) |
| Bill Presing | .... | storyboard supervisor / additional color artist / ... (15 episodes, 2003-2006) |
| Doc Hammer | .... | title sequence (15 episodes, 2003-2004) |
| Christopher McCulloch | .... | title sequence / storyboard artist / ... (15 episodes, 2003-2004) |
| Liz Artinian | .... | background painter / color supervisor (15 episodes, 2006-2008) |
| Siobhan Mullen | .... | storyboard supervisor (13 episodes, 2006) |
| Stephen DeStefano | .... | storyboard artist (11 episodes, 2004-2006) |
| Michael Oviedo | .... | storyboard revisionist (11 episodes, 2004) |
| Katie Nix | .... | background painter (10 episodes, 2004) |
| Danny Kimanyen | .... | storyboard revisionist (9 episodes, 2004) |
| Tom Conner | .... | storyboard artist (8 episodes, 2004-2006) |
| Rafael Rosado | .... | storyboard artist (8 episodes, 2006) |
| Michael Manley | .... | storyboard artist (7 episodes, 2004-2006) |
| Esao Andrews | .... | background painter (5 episodes, 2004) |
| Christophe Pouchot | .... | storyboard artist (5 episodes, 2004) |
| Toni Tysen | .... | storyboard revisionist (5 episodes, 2004) |
| Mike Borkowski | .... | storyboard artist (5 episodes, 2006) |
| Michael Kornstein | .... | storyboard revisionist / additional color artist (4 episodes, 2003-2004) |
| Chris George | .... | storyboard revisionist (4 episodes, 2004) |
| Irene Wu | .... | storyboard revisionist (4 episodes, 2004) |
| Alexander Woo | .... | storyboard artist (3 episodes, 2006) |
| Bob Cavin III | .... | storyboard artist (2 episodes, 2004) |
| James Webb | .... | storyboard artist (2 episodes, 2004) |
| Dan Root | .... | storyboard artist (2 episodes, 2006) |
| Garrett O'Donoghue | .... | storyboard artist (2 episodes, 2008) |
| |
|
| Roger Mejia | .... | lip sync / lipsync and animation checker / ... (39 episodes, 2003-2008) |
| Kimson Albert | .... | animation director / computer animator (37 episodes, 2003-2008) |
| Nick DeMayo | .... | animation director / animation direction supervisor / ... (37 episodes, 2003-2008) |
| Jennifer Batinich | .... | animation director (36 episodes, 2004-2008) |
| Tom Bayne | .... | animatic director / animo compositor (29 episodes, 2004-2008) |
| Chris George | .... | character designer (29 episodes, 2004-2008) |
| Mike Foran | .... | character and prop design supervisor / computer animation director (28 episodes, 2003-2006) |
| Miguel Martinez-Joffre | .... | animation direction supervisor / animation director (28 episodes, 2003-2006) |
| Jamison K. Kwon | .... | background designer / background artist (27 episodes, 2003-2006) |
| Vinh Truong | .... | background designer / background artist (27 episodes, 2003-2006) |
| Freya Tanz | .... | background design supervisor (27 episodes, 2004-2006) |
| Matthew I. Jenkins | .... | character designer / character design (25 episodes, 2006-2008) |
| Carly Monardo | .... | character and prop color key / character color key / ... (25 episodes, 2006-2008) |
| Martin Wittig | .... | character designer / character design (25 episodes, 2006-2008) |
| Ray Feldman | .... | background designer / background artist (24 episodes, 2006-2008) |
| Agatha Sarim Kim | .... | animation coordinator: Digital eMation / animation coordinator (22 episodes, 2006-2008) |
| Rick Lacy | .... | character designer / storyboard artist / ... (21 episodes, 2003-2008) |
| Steffen Vala | .... | animatic director (14 episodes, 2004) |
| Heather Austin | .... | character and prop color key (13 episodes, 2004) |
| Amanda Baehr | .... | character designer (13 episodes, 2004) |
| Dong M. Lee | .... | background designer (13 episodes, 2004) |
| Phil Rynda | .... | character designer (13 episodes, 2004) |
| Ian Jones-Quartey | .... | animation director / ink artist (13 episodes, 2006-2008) |
| Sadie Y.E. Lee | .... | animation coordinator: Digital eMation (13 episodes, 2006) |
| Siobhan Mullen | .... | storyboard supervisor (12 episodes, 2008) |
| Deodato Pangandoyon | .... | background artist / background painter (12 episodes, 2008) |
| George Fort | .... | background design supervisor (11 episodes, 2008) |
| Danny Hynes | .... | storyboard artist (11 episodes, 2008) |
| Jonathan Roscetti | .... | storyboard artist / background designer (10 episodes, 2004-2008) |
| Denny Fincke | .... | background artist / background designer (10 episodes, 2008) |
| Christopher Palesty | .... | background artist / background designer (10 episodes, 2008) |
| Danny Kimanyen | .... | character designer / additional layout artist / ... (9 episodes, 2003-2008) |
| Christopher Fisher | .... | background artist / background painter (9 episodes, 2008) |
| Douglas Lovelace | .... | character designer / storyboard artist / ... (8 episodes, 2003-2008) |
| Erik Craddock | .... | background clean-up artist (8 episodes, 2004) |
| Lynda Nettleship | .... | background designer (8 episodes, 2006) |
| Lauren Monardo | .... | storyboard artist (7 episodes, 2008) |
| Mike Borkowski | .... | storyboard artist (6 episodes, 2008) |
| Liz Artinian | .... | coloring supervisor / storyboard artist (5 episodes, 2008) |
| Matthew Peters | .... | storyboard artist (4 episodes, 2008) |
| Rafael Rosado | .... | storyboard artist (4 episodes, 2008) |
| Tom Conner | .... | storyboard artist (3 episodes, 2008) |
| Chris Fisher | .... | background painter / background artist (3 episodes, 2008) |
| Matthew Peters | .... | storyboard artist (2 episodes, 2008) |
| |
|
| Sal Malimo | .... | track reader (27 episodes, 2004-2006) |
| Luciano DiGeronimo | .... | animo editor / animo re-compositor / ... (21 episodes, 2004-2006) |
| Rebekah Browning | .... | production assistant (15 episodes, 2003-2004) |
| Patrick Costa | .... | production assistant (15 episodes, 2003-2004) |
| Sandra Gaddis | .... | production assistant (15 episodes, 2003-2004) |
| Janet Green | .... | production assistant (15 episodes, 2003-2004) |
| Alyssa Heller | .... | production assistant (15 episodes, 2003-2004) |
| Andres Kwon | .... | production assistant (15 episodes, 2003-2004) |
| Aaron Leopold | .... | production assistant (15 episodes, 2003-2004) |
| Aura Moser | .... | production assistant (15 episodes, 2003-2004) |
| Kimberly Solano | .... | production assistant (15 episodes, 2003-2004) |
| Chris Stearns | .... | production assistant (15 episodes, 2003-2004) |
| Ki-Yong Bai | .... | supervising director: Digital eMation (14 episodes, 2004) |
| Brad Nord | .... | production coordinator (13 episodes, 2004) |
| Alexandra Andrew | .... | production coordinator (13 episodes, 2007-2008) |
| Zoya Baker | .... | production assistant (2 episodes, 2004) |
| Gary Gretsky | .... | production assistant (2 episodes, 2004) |
| Jim Mortensen | .... | production assistant (2 episodes, 2004) |
| Yevgenia Nechayevsky | .... | production assistant (2 episodes, 2004) |
| Vanessa Wood | .... | production assistant (2 episodes, 2004) |
| PeeDee Shindell | .... | production coordinator (2 episodes, 2008) |
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