King「キング」 is the Grizzly’s Sin of Sloth「怠惰の罪グリズリー・シン, Gurizurī Shin」of the Seven Deadly Sins. His real name is Fairy King Harlequin and he is the protector of the Fairy King’s Forest and the Fairy Realm. His Sacred Treasure is the Spirit Spear Chastiefol, which he uses in conjunction with his inherent power, Disaster. He is also the older brother of Elaine, the guardian of the Fountain of Youth, as well as the husband of Diane, a fellow member of the Sins, and a future Giant Queen.

King’s fairy form resembles a young boy with short brown hair, a high forehead, thin eyebrows, and brownish-orange eyes. He wears a long orange and an aqua sweatshirt with a hood and navy blue sleeves, quarter-length navy blue pants, and short boots with large buttons matching his hoodie. He also carries a green leopard pattern pillow which is actually a transformation of his spear Chastiefol. Despite being a fairy, he has yet to grow visible wings.