King Arthur

"All they need to know is that they now have a king."

- Arthur to Lancelot and Percival

King Arthur is a character on ABC's Once Upon a Time. He débuts in the first episode of the fifth season. He is portrayed by guest star Liam Garrigan and co-star Webb Baker Hayes.

King Arthur is based on the character of the same name from the Arthurian Legend.

Trivia
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Etymology

 * The name "Arthur" is of unknown origin. It could be derived from the Celtic name elements artos meaning "bear", combined with viros, meaning "man", or rigos, meaning "king". It could also be related to the obscure Roman family name Artorius.
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Production Notes

 * The casting call describes him as "a good and just ruler who, beneath the surface, is a master manipulator who can carry a grudge to the grave, and maybe beyond. He harbors an eternal burning love for Guinevere that can lean toward being a bit... controlling. For this role, Once aims to cast a gent in his mid-30s to early 40s, and again a British accent is mandatory".
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Props Notes

 * King Arthur's coat of arms is a sea-wyvern, a legendary creature with a dragon's head and wings; a reptilian body; two legs; and a fish tail. It is the sea-dwelling variant of the creature known as a wyvern.