- Frank Welker - Baron von Plotz, Ralph T.*@ (3)
- Jeff Bennett - Captain of the Guard, Balon*@
- Jess Harnell - Wakko Warner@
- Maurice LaMarche - The Brain, Squit@ (1)
- Nancy Cartwright - Mindy@ (10)
- Paul Rugg - Mr. Director@ (4)
- Rob Paulsen - Yakko Warner, Dr. Otto von*@ (2)
- Tress MacNeille - Dot Warner, Hello Nurse_*@ (2)
