Rider (Fate/Zero)

Rider is a servant of Waver Velvet in the 4th Holy Grail War. Rider is noble and physically overbearing, who prefers to conquer his enemies by winning without killing and controlling without humiliating them. He is not pragmatic, but is a person who lets history run its course and acts according to his impulses. While he is wild and somewhat inconsiderate to others, his greed ultimately resulted in the happiness of the people he ruled over.

True Identity
His true identity is Alexander the Great, the King of Conquerors.

Role
Rider was summoned by Waver Velvet with an artifact; a mantle once worn by Iskander. This artifact was originally Lord El-Melloi's and stolen by Waver, who intends to prove that his teacher is wrong.

Iskander, the King of Conquerors, is noble and physically overbearing. He is an enormous man who has little interest in the Holy Grail and cares more about conquering the world again, especially now that he realizes the world is much bigger than he was aware of during his life. He is especially fascinated by ordinary aspects of modern life and intends to inform the world of his return, much to Waver's chagrin.

In a battle with Saber prior to his final engagement with Gilgamesh, his chariot was destroyed by Excalibur. Fighting against Gilgamesh on a bridge, Rider used Aionian Hetairoi: Army of the King as a final move. However, Gilgamesh wipes out half of the army with his Enûma Elish, causing the bounded field to dissipate. As a result of the instability, the rest of the army fades, leaving Rider with no choice but to charge him head on. Rider rushes bathing in the curtain fire of Gate of Babylon. Upon nearing him, Rider is captured by Enkidu, and slain by Ea. Gilgamesh appears to have had great amounts of respect for Iskander, stating that he would be ready to accept his opponent's challenge at any given moment.