King Arthur / Voice of God / Middle Head / Hiccoughing Guard
Second Swallow-Savvy Guard / The Black Knight / Peasant 3 / Sir Launcelot the Brave / Taunting French Guard / Tim the Enchanter
Dead Collector / Peasant 1 / Sir Robin the Not-Quite-So-Brave-as-Sir Launcelot / First Swamp Castle Guard / Concorde / Roger the Shrubber / Brother Maynard
Patsy / Green Knight / Old Man from Scene 24 (Bridgekeeper) / Sir Bors / Animator / Gorilla Hand
Dennis's Mother / Sir Bedevere / Left Head / Prince Herbert / Voice of Cartoon Scribe
First Swallow-Savvy Guard / Dennis / Peasant 2 / Right Head / Sir Galahad the Pure / Narrator / King of Swamp Castle / Brother Maynard's Brother / Leader of The Knights Who Say NI!
First Monk / Singing Minstrel / Page Crushed by the Rabbit / Peasant #4
Dead Body / Historian Frank
Knight of Ni / Villager at Witch Burning / Musician at Wedding / Monk / Knight in Battle
Musician at Wedding / Villager at Witch Burning
Knight in Battle (uncredited)
Police Sergeant (uncredited)
Camp Guard / Robin's Minstrel (uncredited)
Guard who Falls into Barrels (uncredited)
Bash (Mudfighter (uncredited)
Sir Not-Appearing-in-this-Film (uncredited)
Guard Eating Apple (uncredited)
Biff (Mudfighter) (uncredited)
Inspector End of Film (uncredited)
Dancing Knight (uncredited)
