 | Jessalyn Gilsig als Kayley (voice) |
 | Andrea Corr als Kayley (singing voice) |
 | Cary Elwes als Garrett (voice) |
 | Bryan White als Garrett (singing voice) |
 | Gary Oldman als Ruber (voice) |
 | Eric Idle als Devon (voice) |
 | Don Rickles als Cornwall (voice) |
 | Jane Seymour als Juliana (voice) |
 | Céline Dion als Juliana (singing voice) |
 | Pierce Brosnan als King Arthur (voice) |
 | Steve Perry als King Arthur (singing voice) |
 | Bronson Pinchot als Grifin (voice) |
 | Jaleel White als Bladebeak (voice) |
 | Gabriel Byrne als Lionel (voice) |
 | John Gielgud als Merlin (voice) |
 | Frank Welker als Ayden (voice) |
 | Jack Angel als Additional Voices (voice) |
| Sarah Freeman als Young Kayley (voice) |
 | Sherry Lynn als Additional Voices (voice) |
 | Mickie McGowan als Additional Voices (voice) |
| John Williamson | Animation |
| Frederik Du Chau | Director |
| Vera Chapman | Novel |
| Padraig Collins | Animation |
| Audrey Stedman | Layout |
| Karen Hamrock | Layout |
| Jennifer Yuan | Layout |
| Stephan Franck | Storyboard |
| Michael Schlingmann | Animation |
| Edwin Shortess | Visual Effects |
| Jeannine Berger | Post Production Supervisor |
| Scott T. Petersen | Animation |
| Adam Henry | Animation |
| Gabriele Zucchelli | Animation |
| Igor Khait | Production Manager |
| Tom King | Animation |
| Patrick J. Love | Production Manager |
| Tom Myers | Sound Designer |
| Christopher Boyes | Sound Designer |
| Bub Asman | Sound Effects Editor |
| Kirk DeMicco | Screenplay |
| William Schifrin | Screenplay |
| Jacqueline Feather | Screenplay |
| David Seidler | Screenplay |
| David E. Campbell | Sound Re-Recording Mixer |
| Patrick Doyle | Original Music Composer |
| Gregg Rudloff | Sound Re-Recording Mixer |
| Kevin Crehan | Supervising Music Editor |
| John T. Reitz | Sound Re-Recording Mixer |
| Steve Pilcher | Production Design |
| Barry Moss | Casting |
| Stanford C. Allen | Editor |
| Adam Johnston | Sound Effects Editor |
| Dalisa Cohen | Producer |
| Julie Hughes | Casting |
| Korey Coleman | Animation |
| Uli Meyer | Visual Development |
| Steve Perry | Theme Song Performance |
| Richard L. McCullough | Associate Editor |
