- Rachel Adams
- Mouse
- Lori Alan
- Green
- Jack Angel
- Numbers
- Erica Beck
- Number 1
- Sheryl Bernstein
- Numbers
- Antoinette Blanchard
- Number 7
- Joey Camen
- Mr. Frog
- Debi Derryberry
- Tad
- Sandy Fox
- Lily / Mouse Doctor (voice) (as a different name)
- Danny Jacobs
- White
- Michael P. Mendelsohn
- Number 3
- Michael Mendelson
- (voice)
- Candi Milo
- Leap
- Katie Pfannkuche
- Number 2
- Molly Pfannkuche
- Number 9
- Phil Proctor
- Professor Quigley
- Jan Rabson
- Number 4
- Kevin Schon
- Mr. Websley / Number 0 / Number 5 / Number 10 (voice) (as Reed Waxman)
