Ashiya Douman

Ashiya Douman is an exceptionally tall and pale man with a lithe, unnervingly slender build and long, messy black hair that fans out in sharp spikes. He is distinguished by a perpetual, wide-set sadistic grin and dark, polished obsidian eyes that convey a sense of inhuman malice. His attire consists of extravagant black and white robes worn open to the waist, featuring ornate gold patterns and paired with traditional high-soled geta sandals.

Sadistic, manipulative, theatrical, sycophantic, treacherous, hedonistic, and cruel.

Alter Ego Servant and Chaotic Onmyoji

A legendary rival to the great onmyoji Abe no Seimei during the Heian period, Douman was a Buddhist priest who specialized in curses and dark sorcery. In the Fate series, he is manifested as an Alter Ego High Servant, a composite being fused with various dark deities such as Chernobog and Itzpapalotl by the Alien God. He acted as a major recurring antagonist who orchestrated various historical catastrophes for personal amusement before eventually joining the protagonist as a summonable Ally.