| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Adam Beechen | Crew | Writing | Writer | 1 |
 Dan Riba | Crew | Directing | Director | 19 |
 David McDermott | Crew | Writing | Writer | 1 |
 Dwayne McDuffie | Crew | Writing | Writer | 2 |
Ernie Altbacker | Crew | Writing | Writer | 2 |
 Geoffrey Thorne | Crew | Writing | Writer | 2 |
 J. M. DeMatteis | Crew | Writing | Writer | 1 |
 Kevin Grevioux | Crew | Writing | Writer | 1 |
Len Uhley | Crew | Writing | Writer | 9 |
 Len Wein | Crew | Writing | Writer | 1 |
 Marty Isenberg | Crew | Writing | Writer | 2 |
Peter David | Crew | Writing | Writer | 3 |
 Stan Berkowitz | Crew | Writing | Writer | 1 |
Steven Barnes | Crew | Writing | Writer | 1 |
Eugene Son | Crew | Writing | Writer | 1 |
Joe Casey | Crew | Writing | Writer, Creator | 39 |
Matt Wayne | Crew | Writing | Writer | 1 |
 Matt Youngberg | Crew | Directing | Director, Writer | 18 |
Steven T. Seagle | Crew | Creator | Creator | |
 Butch Lukic | Crew | Directing | Director | 14 |
 Duncan Rouleau | Crew | Writing | Writer, Creator | 7 |
 Joe Kelly | Crew | Writing | Writer, Creator | 32 |
 Charlotte Fullerton | Crew | Writing | Writer | 5 |
 Brian Swenlin | Crew | Writing | Writer | 1 |
 Adam Wylie | Cast | Actor | Pierce / Forever Knight #3 (voice) | 1 |
 Alexander Polinsky | Cast | Actor | Argit (voice) | 4 |
 Ashley Johnson | Cast | Actress | Gwen Tennyson (voice) | 52 |
 Beth Littleford | Cast | Actress | Sandra Tennyson (voice) | 1 |
 Bill Mumy | Cast | Actor | Agent Bryson (voice) | 1 |
 Brian George | Cast | Actor | Victor Valadis / Janitor (voice) | 1 |
 Charlie Schlatter | Cast | Actor | Tack / Plumber (voice) | 1 |
 Chris Pratt | Cast | Actor | Cooper (voice) | 2 |
 Christopher McDonald | Cast | Actor | Captain Nemesis (voice) | 2 |
 Danny Jacobs | Cast | Actor | Captain / Police Dispatch / Dr. Pervis (voice) | 1 |
 David McCallum | Cast | Actor | Professor Paradox (voice) | 3 |
 Dee Bradley Baker | Cast | Actor | Humungosaur (voice) | 52 |
 Diane Delano | Cast | Actress | Ma Vreedle / Pretty Boy Vreedle (voice) | 1 |
 Diedrich Bader | Cast | Actor | Simian (voice) | 1 |
 Dwight Schultz | Cast | Actor | Sheriff / Dr. Animo (voice) | 1 |
 Fred Tatasciore | Cast | Actor | Quince / Robot Guard (voice) | 1 |
 Greg Cipes | Cast | Actor | Kevin Levin (voice) | 52 |
 Greg Ellis | Cast | Actor | Dagonet / Reporter Chet Rigby (voice) | 1 |
 J.K. Simmons | Cast | Actor | Magister Gilhil / Plumber (voice) | 1 |
 James Arnold Taylor | Cast | Actor | Announcer / Fake Vilgax / Fridge (voice) | 1 |
 James Remar | Cast | Actor | Vilgax (voice) | 5 |
 Jason Marsden | Cast | Actor | Young Max Tennyson (voice) | 1 |
 Jeff Bennett | Cast | Actor | Pops Vreedle / Jailer (voice) | 1 |
 Jim Piddock | Cast | Actor | King Urien / Color Commentator / Chair Umpire (voice) | 1 |
 John DiMaggio | Cast | Actor | Will Harangue / Rath (voice) | 1 |
 Jon Polito | Cast | Actor | Mizaru (voice) | 1 |
 Juliet Landau | Cast | Actress | Natalie Tennyson / Melinda (voice) | 3 |
 Keone Young | Cast | Actor | Julie's Dad / Repair Man / Cop (voice) | 1 |
 Kevin Michael Richardson | Cast | Actor | Kwarrel (voice) | 1 |
 Marianne Muellerleile | Cast | Actress | Maureen (voice) | 1 |
 Matt Levin | Cast | Actor | Cash (voice) | 1 |
 Miguel Ferrer | Cast | Actor | Magister Hulka / Alpha #4 (voice) | 1 |
 Nicholas Guest | Cast | Actor | Simons / Worker / Guest (voice) | 1 |
 Patrick Cavanaugh | Cast | Actor | Winston / Esoterica / Additional Voices (voice) | 3 |
 Paul Eiding | Cast | Actor | Max Tennyson / Guard #1 / Guard #2 (voice) | 7 |
 Peter MacNicol | Cast | Actor | Oliver / Forever Knight #1 (voice) | 2 |
 Peter Renaday | Cast | Actor | Sir George (voice) | 5 |
 Peter Stormare | Cast | Actor | King Xarion / King Viktor (voice) | 1 |
 Powers Boothe | Cast | Actor | Sunder (voice) | 1 |
 Richard Doyle | Cast | Actor | Driscoll / Additional Voices (voice) | 2 |
 Rob Paulsen | Cast | Actor | Rhomboid Vreedle / Magister Patelliday (voice) | 1 |
 Robin Atkin Downes | Cast | Actor | Sir Cyrus / Additional Voices (voice) | 2 |
 Scott Menville | Cast | Actor | J.T. (voice) | 1 |
 Tara Strong | Cast | Actress | Serena / Young Ben Tennyson (voice) | 1 |
 Tia Texada | Cast | Actress | Elena Validus (voice) | 2 |
 Tress MacNeille | Cast | Actress | Zennith (voice) | 1 |
 Vicki Lewis | Cast | Actress | Agent Locke (voice) | 1 |
 Wil Wheaton | Cast | Actor | Mike Morningstar / Darkstar (voice) | 3 |
 Xander Berkeley | Cast | Actor | Warden Morgg / Trukk (voice) | 1 |
 Yeni Alvarez | Cast | Actress | Dr. Borges (voice) | 1 |
 Yuri Lowenthal | Cast | Actor | Ben Tennyson (voice) | 52 |
 Kari Wahlgren | Cast | Actress | Charmcaster (voice) | 4 |
 Khary Payton | Cast | Actor | Hex (voice) | 1 |
 Tara Platt | Cast | Actress | Jennifer Nocturne (voice) | 2 |
 Vyvan Pham | Cast | Actress | Mrs. Jones (voice) | 1 |
 Molly C. Quinn | Cast | Actress | Eunice / Computer (voice) | 2 |
 Olivia Hack | Cast | Actress | Emily (voice) | 1 |
 Zeno Robinson | Cast | Actor | Alan Albright / Heatblast (voice) | 2 |
 Sean Donnellan | Cast | Actor | Cameraman / Thug / Tech (voice) | 1 |
| Person | Type | Job | Role(s) | Episodes |
