| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Amy Wolfram | Crew | Writing | Writer | 2 |
 David Slack | Crew | Writing | Writer | 1 |
Eddie Guzelian | Crew | Writing | Writer | 1 |
Greg Weisman | Crew | Writing | Writer | 1 |
 J. M. DeMatteis | Crew | Writing | Writer | 4 |
 Marty Isenberg | Crew | Writing | Writer | 1 |
Scott Jeralds | Crew | Directing | Director | 3 |
 Stan Berkowitz | Crew | Writing | Writer | 2 |
Steven Melching | Crew | Writing | Writer | 2 |
 Brandon Vietti | Crew | Directing | Director | 8 |
 James Tucker | Crew | Production | Producer | 26 |
Matt Wayne | Crew | Writing | Writer | 3 |
Tim Maltby | Crew | Directing | Director | 4 |
 Lauren Montgomery | Crew | Directing | Director | 4 |
 Michael Jelenic | Crew | Writing | Writer | 3 |
Keith Damron | Crew | Writing | Writer | 1 |
Joseph Kuhr | Crew | Writing | Writer | 1 |
 Adam Wylie | Cast | Actor | Brainiac 5 (voice) | 26 |
 Alexander Polinsky | Cast | Actor | Chameleon Boy (voice) | 13 |
 Amy Hill | Cast | Actress | K3NT (voice) | 1 |
 Andy Milder | Cast | Actor | Lightning Lad (voice) | 26 |
 April Winchell | Cast | Actress | Winema Wazzo (voice) | 2 |
 Billy West | Cast | Actor | Dispatcher (voice) / Guide-Bot (voice) | 1 |
 Bob Bergen | Cast | Actor | Young Lightning Lad (voice) | 1 |
 Bumper Robinson | Cast | Actor | Star Boy (voice) | 3 |
 Corey Burton | Cast | Actor | Brainiac (voice) | 3 |
 Dan Castellaneta | Cast | Actor | Boris (voice) / Captain Howdy (voice) / Coluans (voice) | 1 |
David Sobolov | Cast | Actor | The Persuader (voice) / Lord Reesmu (voice) | 1 |
 Dorian Harewood | Cast | Actor | Dr. Mar Londo (voice) | 1 |
 Greg Ellis | Cast | Actor | Drax (voice) | 1 |
 Harry Lennix | Cast | Actor | Dr. Mar Londo (voice) | 1 |
 Heather Hogan | Cast | Actress | Phantom Girl (voice) | 17 |
 James Arnold Taylor | Cast | Actor | Mekt Ranzz (voice) / Jo Nah (voice) | 1 |
 Janice Kawaye | Cast | Actress | Young Lightning Lord (voice) | 1 |
 Jennifer Hale | Cast | Actress | Space Warrior / Ma Kent (voice) | 1 |
 Jim Ward | Cast | Actor | Mordru (voice) | 1 |
 Lauren Tom | Cast | Actress | Zyx (voice) | 2 |
 Michael Cornacchia | Cast | Actor | Bouncing Boy (voice) | 26 |
 Nika Futterman | Cast | Actress | Ayla (voice) | 1 |
 Phil Morris | Cast | Actor | Imperiex (voice) | 7 |
 Richard McGonagle | Cast | Actor | Host (voice) | 1 |
 Sab Shimono | Cast | Actor | K3NT (voice) | 1 |
 Shawn Harrison | Cast | Timber Wolf (voice) | 26 | |
 Tara Strong | Cast | Actress | Alexis (voice) | 1 |
 Taylor Negron | Cast | Actor | Starfinger (voice) | 1 |
 Victor Raider-Wexler | Cast | Actor | Dr. Neerg (voice) | 1 |
 Wil Wheaton | Cast | Actor | Cosmic Boy (voice) | 6 |
 Yuri Lowenthal | Cast | Actor | Superman (voice) | 13 |
 Kari Wahlgren | Cast | Actress | Saturn Girl (voice) | 26 |
 Keith Ferguson | Cast | Actor | Karate Kid (voice) / Nemesis Kid (voice) | 1 |
 Khary Payton | Cast | Actor | Tyr (voice) / The Hunter (voice) | 1 |
 Madison Davenport | Cast | Actress | Abel (voice) | 1 |
 Tara Platt | Cast | Actress | Dream Girl (voice) | 1 |
 Lex Lang | Cast | Actor | Grimbor the Chainsman (voice) / R.J. Brande (voice) | 1 |
 Dave Wittenberg | Cast | Actor | Ferro Lad (voice) | 3 |
 David Lodge | Cast | Actor | Tharok (voice) | 1 |
Jefferson Black | Cast | Terra-Man (voice) | 1 | |
| Person | Type | Job | Role(s) | Episodes |
