King of Tintagel

An unnamed boy was the king of Tintagel in 821 AD.

Biography
In Tintagel, England in 821, the King complains about the festival. He calls his wizards, Martin Stein and Jefferson Jackson. They try to entertain him with their technology, but the King orders his men to cut off their heads. The Legends arrive and the team fight their way out.

Trivia

 * This character can not be King Arthur, because he appeared later in the episode, which happens in the year 507. But Tintagel is the birthplace of King Arthur.