Rollenname: King Arthur / Middle Head / Hiccoughing Guard
Rollenname: Second Swallow-Savvy Guard / The Black Knight / Peasant 3 / Sir Lancelot the Brave / Taunting French Guard / Tim the Enchanter
Rollenname: Patsy / Green Knight / Old Man from Scene 24 (Bridgekeeper) / Sir Bors / Animator / Gorilla Hand
Rollenname: Dead Collector / Peasant 1 / Sir Robin the Not-Quite-So-Brave-as-Sir Launcelot / First Swamp Castle Guard / Concorde / Roger the Shrubber / Brother Maynard
Rollenname: Dennis's Mother / Sir Bedevere / Left Head / Prince Herbert
Rollenname: First Swallow-Savvy Guard / Dennis / Peasant 2 / Right Head / Sir Galahad the Pure / King of Swamp Castle / Brother Maynard's Brother / Leader of The Knights Who Say NI!
Rollenname: Zoot / Dingo
Rollenname: The Witch
Rollenname: Historian's Wife
Rollenname: Dr. Winston
Rollenname: Knight of Ni/Villager at Witch Burning/Musician at Wedding/Monk/Knight in Battle
Rollenname: Girl in Castle Anthrax
Rollenname: Page-turner (uncredited)
(written by)
Voice of God
Narrator
Voice of Cartoon Scribe
Verschiedene
Carol Cleveland (Zoot / Dingo)
Connie Booth (The Witch)
John Cleese
(Second Swallow-Savvy Guard / The Black Knight / Peasant 3 / Sir Lancelot the Brave / Taunting French Guard / Tim the Enchanter)
Rolle:Sir Lancelot
Terry Jones
(Dennis's Mother / Sir Bedevere / Left Head / Prince Herbert)
Rolle:Dennis's Mother
Eric Idle
(Dead Collector / Peasant 1 / Sir Robin the Not-Quite-So-Brave-as-Sir Launcelot / First Swamp Castle Guard / Concorde / Roger the Shrubber / Brother Maynard)
Rolle:Sir Robin the Not-Quite-So-Brave-as-Sir Launcelot