Assassin (Fate/stay night), Villains Wiki

Assassin is an antagonist in the Fate series. He is the solitary servant of Caster during the fifth Holy Grail War. Clothed in a traditional Japanese umanori hakama and kimono with an indigo haori, he bars entry beyond the main gate of the Ryuudouji Temple. Quiet and composed, he maintains a degree of bushido and is eager to spar with other Servants. While he is of the same class, he is not to be confused with Zouken Matou's servant, True Assassin. In Japanese, he is voiced by Shin'ichirō Miki i

Goetia, Villains Wiki

Dark Sakura, Villains Wiki

True Assassin, Villains Wiki

Zouken Matou, Pure Evil Wiki

Zouken Matou, Villains Wiki

Assassin (MURDER), Villains Wiki

Kirei Kotomine, TYPE-MOON Wiki

Assassin

The Hand (comics) - Wikipedia

True Assassin (Character) - Giant Bomb

Villain to Kill (Webcomic) - TV Tropes