| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Richard Rich | Crew | Directing | Director, Producer, Creator | 10 |
 Ben Livingston | Cast | Actor | British Officer / Soldier / Knox (voice) | 1 |
 Billy Mayo | Cast | Actor | Henry Tubman (voice) | 1 |
 Christine Lakin | Cast | Actress | Marie Curie (voice) | 1 |
 Elizabeth Daily | Cast | Actress | Helen Keller (voice) | 1 |
 Gregory Snegoff | Cast | Actor | Pinzon (voice) | 1 |
 Jack Whitaker | Cast | Actor | Camera Man (voice) | 1 |
 Mary Louise Gemmill | Cast | Anne Sullivan (voice) | 1 | |
 Matthew Best | Cast | Tad (voice) | 1 | |
 Morgan Rusler | Cast | Actor | Christopher Clavius (voice) | 1 |
Neil Vipond | Cast | Actor | Nicolo Polo (voice) | 1 |
 Patrick Page | Cast | Actor | Bosco (voice) | 1 |
 Ray Porter | Cast | Actor | Stanton / Narrator (voice) | 1 |
 William Dennis Hunt | Cast | Actor | Ludwig van Beethoven as an old man (voice) | 1 |
 Brian Nissen | Cast | Actor | King Charles (voice) | 1 |
 Sean Smith | Cast | Actor | Joseph Haydn / Aristocrat #1 / Constable #1 (voice) | 1 |
U. Jonathan Toppo | Cast | Actor | Huron (voice) | 1 |
John Pribyl | Cast | Actor | Goodman Cooke (voice) | 1 |
Remi Sandri | Cast | Actor | Gaspar (voice) | 1 |
Joe Hilsee | Cast | Simon (voice) | 1 | |
Victor Humphries | Cast | Louis Pasteur (voice) | 1 | |
Paul O'Connor | Cast | Actor | Francis Upton (voice) | 1 |
Michael Henwright | Cast | Ludwig van Beethoven as a young man (voice) | 1 | |
Jean Miller | Cast | Marie Lichnowsky (voice) | 1 | |
 Dion Luther | Cast | Martin (voice) | 1 | |
Don Burroughs | Cast | Bartholomew Columbus (voice) | 1 | |
Sandy Beth | Cast | Salai (voice) | 1 | |
Robert Cottrell | Cast | Michelangelo (voice) | 1 | |
Bridget Connors | Cast | Joan of Arc (voice) | 1 | |
 John A. Nicolaysen | Cast | Actor | Hill (voice) | 1 |
 Phil Hubbard | Cast | Actor | Ridley (voice) | 1 |
Jake Williamson | Cast | Verrochio / Duke of Florence / Peasant (voice) | 1 | |
| Person | Type | Job | Role(s) | Episodes |
