Arthur Pendragon

is the current king of the Kingdom of Camelot, who lead "an army" towards Liones whilst being aided by a mysterious cloaked person.

Appearance
Arthur dons a set of full body armor, with a unique helmet accentuated by three horn and a cape. Once he removed his helmet, he looked very youthful and his hair was shown to be somewhat combed but messy. Arthur appears to be short in height.

Personality
Arthur was shown to be quite polite as he apologized for the fake army his cloaked friend made, but tends to be stubborn as he refused to leave Liones until he met with the King personally. Despite this, Arthur is shown to be willing to help other kingdoms, as he sensed Liones was having a problem of their own and decided to help them out.

Arthur seem to be carefree and energetic, standing unpharse when Hendricksen attacked him. Arthur able to tell whether there is trouble or not in a person without them explain it.

History
During the Introduction arc, Arthur is rumored to have just became the king of Camelot by the drinking patrons at Boar Hat. In Camelot, a giant sword fell from the sky to the earth, where people believed that it was a holy sword from God. Every Holy Knight tried to pull it out, but they all failed until Arthur came and successfully pulled the sword, making him the new king of Camelot.

Kingdom Infiltration arc
When the three Seven Deadly Sins - Meliodas, Ban and Gowther - invade the Kingdom of Liones in order to save Elizabeth, Arthur leads a sizable army of Holy Knights from Camelot. His presence is easily noticed by both Great Holy Knights and the three invading Deadly Sins. Outside of the castle, Arthur is seen riding in his huge warhorse and stands with his assembled forces and a mysterious cloaked person who stands beside him. When Hendricksen confronted Arthur outside of the gates with his two Holy Knights, the king of Camelot wishes to be granted audience with King Liones after the cloaked person removed an illusion of an army revealing it to be a ruse just to get the Holy Knights' attention. Hendricksen lied to Arthur, saying the king was sick and is under care of the kingdom's finest mages, but Arthur told the latter that his cloak friend can heal him. Hendricksen refused Arthur offer, but the latter said he refused to leave, and if there is a problem, he would help out.

Hendricksen reluctantly accepted Arthur's offer and escorted the king of Camelot and his cloaked friend to the castle. While on the way there, Hendricksen questioned Arthur if he knew of the problem they're facing only for the young king to reveal that he made it up, making the Great Holy Knight grew suspicious of him. Asking Arthur once more, this time of what he's after, only for the latter refuse to reveal it, Hendricksen and his two other Holy Knights surrounded the duo and told them that they killed every foreign messengers who visited Liones, even if he was the king. Then suddenly, an unnamed female Holy Knight appeared out of nowhere and informed Hendricksen of a event and teleported away. When Arthur asked if the female Holy Knight was a Liones mage, Hendricksen immediately attacked Arthur with one slash, telling him that he won't live to find out.

After sending the king of Camelot flying to a building, Hendricksen discovered that he received a cut on his head, realizing that Arthur's reputation was merely not for show as the latter blocked Hendricksen's attack with his sword while at the same time wounding him. Arthur then comments that Hendricksen is not bad being a Great Holy Knight as the king of Camelot prepares to battle him while his cloaked friend dealt with the other two Holy Knights.

Abilities/Equipment
Arthur carries a large sword and is seen mounted on a relatively huge warhorse which also possesses metal armor. Arthur is appears to be very capable combatant, as he easily blocked Hendricksen's surprise attack and simultaneously deal a counter strike.

Trivia

 * Arthur, in Arthurian legend, was famous king of Camelot, wield the legendary sword, Excalibur, and the founder of Knights of the Round Table.