He is a top tier servant from the fate series that is summoned by one if seven masters for a holy Grail war. the seven classes summoned by each of the masters are: archer, saber, lancer, rider, assassin, caster, and berserker. He is an archer class servant and the "King of heros". He is arrogant, self righteous, and cocky calling everyone mongrels. his noble phantasm is called "Gate of Babylon" which allows him to access his near endless Treasury of weapons and other items the weapons of which he uses to attack instead of his fists or a bow and arrow he launches these weapons at his enemies through magic golden portals allowing him to keep his distance. he never listens to his master unless forced to by a command spell thinking of all there commands as recommendation instead of orders and will usually be the one calling the shots.