King is the Grizzly's Sin of Sloth of the Seven Deadly Sins, and the older brother of Elaine. His real name is Harlequin and 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. Following the events Nanatsu no Taizai into the sequel series, King has married Diane, fellow member of the Sins. Their marriage united Fairy Clan and the Giant Clan, and together they rule over the two clans. Their marriage is also blessed with seven children: Nasiens, Sixtus, Belte, Zana, Zilian, Phao, Tioreh. However, Nasiens has been swapped out for the human Mertyl, who had taken Nasiens's place as his first adoptive son.