Jessalyn Gilsig
Kayley (voice)
Acting
Andrea Corr
Kayley (singing voice)
Acting
Cary Elwes
Garrett (voice)
Acting
Bryan White
Garrett (singing voice)
Acting
Gary Oldman
Ruber (voice)
Acting
Eric Idle
Devon (voice)
Acting
Don Rickles
Cornwall (voice)
Acting
Jane Seymour
Juliana (voice)
Acting
Céline Dion
Juliana (singing voice)
Acting
Pierce Brosnan
King Arthur (voice)
Acting
Steve Perry
King Arthur (singing voice)
Acting
Bronson Pinchot
Grifin (voice)
Acting
Jaleel White
Bladebeak (voice)
Acting
Gabriel Byrne
Lionel (voice)
Acting
John Gielgud
Merlin (voice)
Acting
Frank Welker
Ayden (voice)
Acting
Jack Angel
Additional Voices (voice)
Acting
Sarah Freeman
Young Kayley (voice)
Acting
Sherry Lynn
Additional Voices (voice)
Acting
Mickie McGowan
Additional Voices (voice)
Acting
Linda Harmon
Singing Voice (voice) (uncredited)
Acting