- Quinton Flynn - Max Courage
- Quinton Flynn - Mola Tom (voice)
- Susanne Blakeslee - Hector's Mom (voice)
- Kathryn Fiore - Agent Heidi (voice)
- Billy West - Dog (voice)
- Billy West - Gollum (voice)
- Roger L. Jackson - Mojo Jojo impression (voice)
- Charlie Schlatter - Tony (voice)
- Robbie Rist - Pizza Guy (voice)
- Dee Bradley Baker - Condor (voice)
- Dee Bradley Baker - Enrique Jr. (voice)
- Dee Bradley Baker - Alien (voice)
- Daniel Hagen - Monty (voice)
- Greg Ellis - Lady of the Lake (voice)
- Mark Hamill - Judge Bukowski (voice)
- Gregg Berger - Baliff (voice)
- Neil Ross - Ranger (voice)
- Tom Kenny - Huckleberry Hound impression (voice)
- Rachael MacFarlane - Nurse Buffy (voice)
- Michael Dorn - Rupert the Green-Nosed Reindeer (voice)
- Charlie Adler - Jack the Snowman (voice)
- Rino Romano - Destructicus Con Carne (voice)
- Robert Picardo - Cod Commando (voice)
- Earl Boen - Vlad (voice)
- Peter Renaday - Abraham Lincoln (voice)
- Peter Renaday - Dr. Courage (voice)
- Scott Menville - Rick Courage (voice)
- Jim Rash - Ensign Slaughter (voice)
- April Stewart - Cataclysma/Troop Terror (voice)
- Masasa Moyo - Kablamity Jane (voice)
- Matt Sullivan
- Maxwell Atoms
Mark Hamill hace el papel de Judge Bukowski (voice).
Michael Dorn interpreta a Rupert the Green-Nosed Reindeer (voice) en la serie.
Earl Boen interpreta a Vlad (voice) en la serie.
Greg Ellis interpreta a Lady of the Lake (voice) en la serie.
Phil LaMarr interpreta a Hector Con Carne (voice) en la serie.
Grey DeLisle interpreta a Major Dr. Ghastly (voice) en la serie.
Armin Shimerman interpreta a General Skarr/Stomach (voice) en la serie.
Frank Welker interpreta a Boskov (voice) en la serie.
Jesse Corti hace el papel de Boskov/Commando (voice).
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