Gilgamesh

An Archer-class Servant. He appears familiar with Fuyuki City and has an overt but unrequited love for Saber. His true identity is GilGamesh, the King of Heroes. He is initially known also as the Golden Archer. In the anime, he defeats both Caster and Kuzuki. Saber initially states that GilGamesh defeated her as an explanation for why he is alive during the fifth Holy Grail War (Shirō also refers to him as the "eighth Servant"), but later clarifies that she and Kiritsugu Emiya had won the fourth Holy Grail War. It is later revealed that he was splashed with the mud of the Holy Grail back then, converting his body to one of flesh and blood and allowing him to survive without a source of mana.