アサシン / 山の翁 / キングハサン,
from Fate/Grand Order (Game)
Height
220.00 cm
Origin
Middle East
Assassin (アサシン, Asashin) is an Assassin-class Servant able to be summoned by the Protagonist in the Grand Orders of Fate/Grand Order. He was Grand Assassin (グランドアサシン, Gurando Asashin) until he removed himself of his rank of "Grand" during the battle with Tiamat. Assassin's True Name is "Old Man of the Mountain" ("山の翁", Yama no Okina), the first to hold the title of Hassan-i-Sabbah, the founder of the Hashashin where he is considered to be both the first and the last "Old Man." He is given the nickname of King Hassan (キングハサン, Kingu Hasan) by Ritsuka Fujimaru, to which he takes a liking. Even so, his actual identity was unknown even to the eighteen individuals who came to inherit his titles. Proof that he in fact existed is nowhere to be found -- except in the certainty that if ever he who takes the seat of Hassan-i-Sabbah strays from his path, there shall come an executioner to part him from his head.

Fate/Grand Order (Game)
Fate/Grand Order is an online, free-to-play role-playing mobile game developed by Delightworks using Unity, and published by Aniplex. The game is based on Type-Moon's Fate/stay night franchise, and was released in Japan on July 29, 2015 for Android, and on August 12, 2015 for iOS. The game is centered around turn-based combat where the player, who takes on the role of a "Master", summons and commands powerful familiars known as "Servants" to battle enemies. The story narrative is presented in a visual novel format, and each Servant has their own scenario which the player can explore. In 2015, the Chaldea Security Organization draws on experts of both the magical and mundane fields to observe the future of mankind for possible extinction events. Humanity's survival seems assured for the next century—until the verdict suddenly changes, and now eradication of the species awaits at the end of 2016. The cause is unknown, but appears to be linked with the Japanese town of Fuyuki and the events of 2004 during the Fifth Holy Grail War. In response, Chaldea harnesses an experimental means of time travel, the Rayshift technology. With it, Ritsuka Fujimaru (a young man or woman, depending on the player's choice of gender) was newly recruited to the organization, and a mysterious girl named Mash Kyrielight, can travel back to 2004 and discover how to save humanity. A grand order to fight fate has been declared—an order to change the past and restore the future.[12] Following the events in Fuyuki, Ritsuka Fujimaru and Mash Kyrielight must restore the Foundation of Humanity by retrieving powerful Holy Grails.