|Rank 1||Inflicts damage equal to 240% of Attack on one enemy.|
|Rank 2||Inflicts damage equal to 360% of Attack on one enemy.|
|Rank 3||Cancels Stances on one enemy and inflicts damage equal to 500% of Attack, then Stuns for 1 turn.|
|Rank 1||Inflicts damage equal to 120% of Attack on all enemies.|
|Rank 2||Inflicts damage equal to 120% of Attack on all enemies. Disables Attack Skills for 1 turn.|
|Rank 3||Inflicts damage equal to 180% of Attack on all enemies. Disables Attack Skills for 2 turns.|
|Inflicts Sever damage equal to 560 / 616 / 672 / 728 / 784 / 840% of Attack on one enemy.|
|The King's Timing|
|Increases Crit Damage by 10% for each orb in the hero's Ultimate Move Gauge. The value increases by an additional 50% if it is completely full.|
Before becoming a king, Arthur was a simple child who was adopted by a man who happened to be a Holy Knight and had an adopted older brother named Kay. Kay harbored a hatred for the young boy. Once, while they were children, Kay took Arthur's sword and offered to give it back to him if he crushed an apple with a stick whilst blindfolded and in the middle of a gorge on one of several platforms.
Arthur completed this challenge with ease. Kay was furious at Arthur's skill and tossed the sword at him which lead to Arthur falling down unfazed while Kay smiled. However, Arthur was saved by a strange Holy Knight who was shocked and amazed at how Arthur managed to be brave and fearless whilst falling to his doom. He was also impressed as to how Arthur forgave his brother, even telling him he should be a king instead of a Holy Knight like their father. Arthur was shocked until it was revealed that he was Bartra Liones, the 11th king of Liones, as he wondered if he was never going to be a Holy Knight as the king of Liones and his two escorts, Slader and Hugo, left for a meeting with King Uther Pendragon.
During the Introduction arc, Arthur is rumored to have just became the new king of Camelot by the drinking patrons at Boar Hat in the small town of Bernia. In Camelot, a giant sword fell from the sky to the Earth, where people believed that it was a holy sword sent 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.
At some point in time Arthur met Merlin, the Boar's Sin of Gluttony, who became his teacher and resolved to rescue King Bartra from the Holy Knights.