Fate stay night is an anime action genre that has many series and each series has its own story. This anime tells about holy grail war or holy grail war which is done once every 10 years. The Holy Grail involves past heroes seizing the sacred cup, but the men are only servants and must be summoned by a chosen one.
Gilgamesh is an antagonist in the story that he has the greatest power amongst other servants. His ability is to make thousands of swords that he can control with his mind. And he has the most powerful sword that is enuma elish, the power of the sword can split one dimension once slashed.