!! Arthur Pendragon/ King Arthur
!!! Nigel Terry
* BedTrick: How he was conceived at the beginning and later on...
** [[spoiler: BrotherSisterIncest: With his sister Morgana who pretended to be Guenevere.]]
* OnlyTheWorthyMayPass: With Excalibur.
* SupernaturalAid: With Merlin, Excalibur and the Lady of the Lake.
!!! Nicol Williamson
* TheCassandra: Throughout the movie, he will tell you exactly what will happen. However, he keeps it so low key that the audience won't notice without a second viewing while the characters just simply ignore it.
* LargeHam: InAWorld where knights [[NoIndoorVoice shout everything]], one man's hamminess stands out even from this crowd. (Possibly the source of his ham is the Dragon.)
!!! Nicolas Clay
* BackForTheFinale: He turns up at Camlann in order to help fight Mordred's forces.
* LoveTriangle: With Arthur and Guenevere.
* [[spoiler: TheParagonAlwaysRebels]]: Throughout the movie, he is praised by his fellow knights as the one who helps bring about their victories, but...
** [[spoiler: FallenHero]]: ...after what happened when Arthur [[spoiler: caught him sleeping with Guenevere]]. He then [[spoiler: ditches his armor and goes off preaching the evils of the King and how he allowed the country to fall.]]
!! Leon De Grance
* LargeHam: It's Jean Luc Picard wearing medieval armor.
* [[spoiler: BedTrick]]: With Arthur as part of her revenge.
** PrimalScene: Watched her mother and her Dad ([[spoiler: It's really Uther in disguise]]) have sex in front of her.
* [[EvilSorcerer Evil Sorcereress]]
* [[spoiler: NoImmortalInertia]]
* AntagonisticOffspring: To his father, Arthur.
** BastardBastard: Big time
* BlingOfWar: One of the fanciest armors in the movie.
* BlondesAreEvil: Just like his mother.
* EvenBadMenLoveTheirMamas: He loved his mother until, [[spoiler: Merlin tricked her into performing the Dragon's Breath. In his rage, he strangled her to death]].
* ThePowerOfLove: Averted. Arthur offers it to him, but tells him off and plans to conquer his kingdom.
* [[spoiler: TogetherInDeath]]
** [[spoiler: MutualKill]]: With Arthur.
--> '''Mordred''': ''Come Father, let us embrace at last.''
!! Uther Pendragon
!!! Gabriel Byrne
* SupernaturalAid: With Merlin until [[spoiler: he ruined his plans to bring about peace because he wanted to have sex with another Queen.]]
* EvenEvilHasLovedOnes: Seems to genuinely want to be a good father to Arthur.