Gilgamesh is a prominent character in the Fate/stay night series, known for his regal and arrogant demeanor. He is the King of Heroes, possessing the greatest treasury of Noble Phantasms, the Gate of Babylon. His character is based on the legendary Sumerian king and is portrayed as a powerful and charismatic Servant. Gilgamesh plays a significant role as both an antagonist and a complex character with a unique sense of pride and honor. His golden armor and distinctive personality make him one of the most memorable characters in the series.