King Arthur

King Arthur is an adult man with pale skin. His hair is dirty blonde and styled back, with the ends flicking upwards above his shoulders. His sideburns merge into his beard, which is black and doesn't reach his philtrum. His eyes are purple and his eyebrows are also black. He wears a golden crown, and a black and white robe, with brown belts featuring round buckles. Beneath this robe, he wears his knight's armour and on top of it all, he has a white cape with an isotoxal star-shaped emblem holding it around him.

He first appears in episode 35, calling the knights of the round table, who are shockingly the other members of the Raimon, excluding Fei and Tenma.

(Source: Inazuma Eleven Wiki)