He was initially rumoured to be dead. In the castle of Fyrien Morgana says "So you ambushed Carleon using those tunnels?" To which Arthur replies, "He never saw us coming."

He is not actually dead as it has been confirmed that he will appear in Series 4. King Carleon will f


Arthur, Merlin, Gwen and Morgana discussing the tunnels used to ambush Carleon

orm an alliance with Morgana and will help her on several occasions, including stealing Merlin's powers and temporarily transfering them to Morgana. He is also a sorcerer.

In season 3 episode 4 Gwaine reveals that his father was a member of Carleon's army. However after Gwaines' father died in battle his mother was turned down by Carleon when she went to him for help.

It is unknown what kingdom he rules.


Series 3:

The Castle of Fyrien (mentioned only)

Series 4:

Powerless (first appearance)(Cameo)

Episode 4.6

Mystery of Time

Episode 4.13(Cameo)

Series 4 Enemies
The Darkest Hour: MorganaMorgauseThe DorochaThe CailleachAgravaineWilddeorenWyvern
The Wicked Day: King OdinMorganaAgravaineThe GleemanGeldred
Aithusa: Julius BordenKing Odin
His Father's Son: MorganaAgravaineQueen AnnisKing CaerleonDerian
A Servant of Two Masters: MorganaAgravaineFomorrohMerlin (indirect)
The Secret Sharer: MorganaAgravaineAlatorOrn
Lamia: LamiaAgravaine
Lancelot du Lac: MorganaLancelot (Shade) •  AgravaineDochraid
A Herald of the New Age: Shrine BoyElyan (indirect)
The Hunter's Heart: MorganaAgravaineHelios
The Sword in the Stone: MorganaAgravaineHeliosAithusaNathair
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