- Christopher Rodriguez Marquette
- Â Alex O'Connell 26 episodes, 2001-2003
- John Schneider
- Â Rick O'Connell 25 episodes, 2001-2003
- Jim Cummings
- Â Imhotep / ... 24 episodes, 2001-2003
- Grey Griffin
- Â Evy Carnahan O'Connell / ... 24 episodes, 2001-2003
- Tom Kenny
- Â Jonathan Carnahan 20 episodes, 2001-2003
- Michael Reisz
- Â Colin Weasler 18 episodes, 2001-2003
- Nicholas Guest
- Â Ardeth Bey / ... 15 episodes, 2001-2003
- Lenore Zann
- Â Anck Su Namun 4 episodes, 2003
- Kevin Michael Richardson
- Â Minotaur 3 episodes, 2002-2003
- Michael T. Weiss
- Â Nizam Toth 3 episodes, 2003
- Rene Auberjonois
- Â Scarab 2 episodes, 2003
- Jeff Bennett
- Â Fadil 2 episodes, 2003
- Jeannie Elias
- Â Yanit 2 episodes, 2003
- Amy Hill
- Â Chief 1 episode, 2001
- Maurice LaMarche
- Â Babe Ruth 1 episode, 2001
- John Kassir
- Â Sub Pilot Dimitri 1 episode, 2001
- Robert Ito
- Â Lin Chou 1 episode, 2001
- Candi Milo
- Â Tiga 1 episode, 2001
- Mona Marshall
- Â Emperor Jin Wu 1 episode, 2001
- Jim Ward
- Â Einstein 1 episode, 2001
- Ulysses Cuadra
- Â Pilow 1 episode, 2001
- Dionne Quan
- Â Ishi 1 episode, 2001
- Thomas Dekker
- Â Simon Montgomery 1 episode, 2002
- Jane Carr
- Â The Villager, Marie 1 episode, 2002
- Kathy Najimy
- Â Aglaophone #2 / ... 1 episode, 2003
- John DiMaggio
- Â Shape Shifter / ... 1 episode, 2003
- Charles Napier
- Â Jack O'Connell 1 episode, 2003
- Gabrielle Carteris
- Â Jane Sherman 1 episode, 2003
- Keith Szarabajka
- Â Fodden King 1 episode, 2003
- Greg Ellis
- Â Charlie Royce 1 episode, 2003
- Sherman Howard
- Â Captain Horoth 1 episode, 2003
- Sean Marquette
- Â Amar 1 episode, 2003
- April Winchell
- Â Aglaophone #1 1 episode, 2003
- Cynthia Songé
- Â Princess Nefertiri 1 episode, 2003