Gilgamesh (Fate Series)

Gilgamesh is one of the Heroic Spirits that takes part in the Fourth as well as Fifth Holy Grail War, being a Servant of the Archer-Class and acting as one of the antagonists in the Fate series. His original Master was Tokiomi Tohsaka before his apprentice, Kirei Kotomine, killed him and forms a pact with Gilgamesh.

Background
Gilgamesh is the great half-human, half-god of Mayan mythology who ruled over the capital of Uruk: Mesopotania. He was considered to be so divine as to be two-thirds god, one-third human, since no-one could match him. This lead him to believe he was invincible. He was the King of Heroes who possessed everything in the world within his vault: the Gate of Babylon. As a child, he favored the gods over humanity, resulting with him being spied on by Enkidu. Eventually, Gilgamesh caught the god spying on him and engaged Enkidu, leading to them becoming friends. After Enkidu's death, Gilgamesh searched for the Herb of Immortality, wishing to store it in his vault. After claiming it and stopping off at a spring, a hungry snake absorbed the energy from the herb, making the root useless for Gilgamesh's use. He then lived the remainder of his life as the King of Uruk, unable to revive his deceased friend.

Personality
Gilgamesh is shown to be a prideful person, placing his own welfare above his people's and nation's. He can also be somewhat greedy due to him wanting every treasure that exists and keeping them for himself, despite the fact that some treasures aren't in his possession. Since he's one of the most powerful Servants, he is extremely arrogant and selfish, believing himself to be the only worthy king and makes him prone to underestimate his opponents. He tends to enjoy many luxuries, including battling.

Physical Appearance
Gilgamesh is a tall, dignified young man that has crimson eyes and blonde hair that resembles a flame. His armor is golden and even his aura is 'golden', making him appear mysterious.

Powers, Weapons and Abilities
Gilgamesh is an Archer-Class Servant as his Noble Phantasm, Gate of Babylon, can shoot out weapons that he has in his vault, or he can wield the selected weapon. It contains weapons he collected in his life, even possessing prototypes of other Servant's Noble Phantasms. While he has many weapons at his disposal, he doesn't know how to use some of them. His most trustworthy weapons in his vault are Enkidu and Ea.

Enkidu has the appearance of chains that are able to bind divine beings. The higher the divinity, the stronger the chains. In addition, it's still strong against people, though the chains are only as strong as the person bound by them.

Ea is a sword that is regarded as the most powerful Noble Phantasm, being an Anti-World Class Noble Phantasm.