Master King is a character that appears in the Sonic the Hedgehog,Tens of thousand years ago prior the Starfall Islands incident, he was an Ancient who was the leader of his people, led them away from their doom, oversaw the colonization of earth, directed the installation of Cyber Space. Master King's trial is considered to be the most frustrating and most difficult part in Sonic Frontiers amongst players, due to how strict the Perfect Parry is in higher difficulty. - Sonic News Network Wiki