Hassan of the Cursed Arm

AKA: Assassin of The White Skull, Hassan, True Assassin, Hanam, Cursed Arm Hassan Class: Assassin Attribute: Man Height: 215 cm Weight: 62 kg Origin: Middle East, Old Man of the Mountain Region: Middle East Alignment: Lawful-Evil Gender: Male

Stats: Strength: B Endurance: C Agility: A Mana: C Luck: E NP: C

Hassan of the Cursed Arm was one of the nineteen leaders who inherited the name Hassan-i-Sabbah and the title Old Man of the Mountain. To succeed to that position, he surrendered his former identity, removed his own face, and abandoned the personal life he had once possessed. Desperate to distinguish himself among the Hassans and leave some mark of his existence, he altered his body and took the arm of the evil spirit Shaytan as his own, gaining the cursed limb that became inseparable from his name. Only after sacrificing everything did he understand that becoming Hassan meant surrendering the very individual recognition he had once sought.

During the distortion of the Holy Land, Hassan was summoned into the era in which he had originally lived and became guardian of the Eastern Mountain Village. With the Lion King’s forces hunting the people outside Camelot, he abandoned the secrecy normally demanded of an assassin and openly protected refugees alongside the other summoned Hassans. When Ritsuka Fujimaru and Mash Kyrielight reached his village with survivors, Hassan initially distrusted their companions from the Round Table, but the testimony of those they had rescued convinced him to grant them shelter. He later joined their campaign against the Lion King, helped bring Hassan of the Hundred Personas and Hassan of Serenity into the alliance, and guided the group toward the Shrine of Azrael in search of aid from the founder of their order.

At the Shrine, Hassan knowingly placed himself under the judgment of the First Hassan, since seeking the founder’s intervention amounted to admitting failure as the Old Man of the Mountain of his era. His execution was postponed so that he could fulfill his remaining responsibility, and he returned to preparing the mountain people for the assault on Camelot. When the eastern village came under attack, Hassan fought to preserve its inhabitants and continued the resistance against the Knights of the Round Table, carrying particular hatred for Tristan after the slaughter committed against the mountain settlements. He intended that, once the Holy Land was restored and the other summoned Hassans disappeared, he would remain behind and care for the people whose lives had been entrusted to him.

Appearance: Hassan of the Cursed Arm has charcoal-gray skin and a very tall, heavily muscular build with massive shoulders, a thick chest, long limbs, and powerful legs. His head is covered by a close-fitting black hood beneath a stark white skull-shaped mask. The mask has large rounded openings across the upper face, a small skeletal nasal opening, and a row of narrow vertical teeth cut along the lower edge. Thin gold-brown accents trace portions of the mask near the cheeks.

His torso is covered in tightly fitted black armor formed from overlapping rib-like plates that create a segmented skeletal pattern across the chest and abdomen. Large rounded black pauldrons cap his shoulders, with additional layered armor wrapping the upper back. His right arm is long and muscular beneath dark fitted material, with several bronze-brown segmented bands encircling the forearm. The right hand is covered by a dark glove with long fingers and small gold bands near the fingertips. A broad bronze-brown belt encircles his waist above a long black cloth garment divided into ragged, pointed strips that hang around his hips and thighs. His left arm is completely covered in black bandages.

When uncovered, his left arm is grotesquely enlarged and dramatically different from the rest of his body. It is extremely long, thick, and vivid molten orange-red, with darker red sections running along the outer surface and brighter yellow-orange areas concentrated through the forearm and hand. The arm expands into an enormous clawed hand with elongated tapered fingers that extend into broad blade-like points. Dark joint lines and irregular color transitions run through the limb, giving it a raw, uneven surface. His legs are covered in fitted black material with bronze-brown bands near the upper thighs

Personality: Hassan is solemn, disciplined, loyal, and strongly governed by duty. Killing is an obligation to him rather than a source of pleasure, and once he recognizes someone as his Master or accepts a responsibility, he refuses to betray that commitment regardless of personal cost. Beneath his frightening appearance and reputation, he values reason and social order and proves capable of considerable patience with ordinary people. He carries lingering shame over the selfish ambition that originally drove him to seek the title of Hassan-i-Sabbah, yet he does not reject the path he chose and accepts judgment from the traditions of his order without attempting to excuse himself.

First Hassan is the founder whose name and office Hassan inherited, and Cursed Arm regards him with such reverence that he willingly accepts the possibility of execution when summoned into his presence. Hassan of the Hundred Personas and Hassan of Serenity are fellow Old Men of the Mountain whom he treats as comrades despite differences in temperament, working beside them to defend the mountain settlements. Ritsuka Fujimaru becomes a trusted commander and ally after proving willing to protect the refugees, while Mash Kyrielight earns Hassan’s respect through the same struggle. Arash is a close ally among the defenders of the mountain people, and Bedivere gains Hassan’s respect despite belonging to the Round Table that has devastated the Holy Land. Rushd is especially important to him; Hassan watches over the boy with unusual warmth and recognizes his connection to Salia, Rushd’s mother and someone tied to Hassan’s abandoned life prior to taking the mask. Tristan becomes one of his most hated enemies after attacking the villages and their inhabitants, while the Lion King and her remaining knights stand as the forces Hassan must defeat to restore his homeland.

Noble Phantasm: Zabaniya Zabaniya manifests Hassan’s cursed arm as a grotesque crimson limb that reaches toward a target and forms a magical replica of their heart. Crushing the replica destroys the real heart simultaneously, killing the victim without needing to physically pierce their chest.

Noble Phantasm Quote: "Human souls are insubstantial things. Writhe in agony! Zabaniya!"

Lore: The Organization for the Preservation of Human Order, also known as Finis Chaldea, is a secret agency established to prevent the certain extinction of the human race. Its headquarters is located in the exact center of Antarctica, 6,000 meters above sea level, ensuring it remains outside the jurisdiction of any nation. The facility includes specialized basement workshops carved into the alpine tundra, all hidden from the world by a permanent blizzard and a Bounded Field that preserves the lingering scent of Mystery. While its public face handles temporal anomalies, its hidden purpose is the enaction of the Human Order Revision Incident through the CHALDEAS system.

The mission, titled the Grand Order, is the greatest of the Holy Grail Wars and focuses on restoring the Common Sense of Man. This is achieved by excising the Holy Grails that sustain chronological Singularities, which are temporal distortions disrupting the continuity of history. These efforts directly oppose the Human Order Incineration Protocol, a catastrophic event that threatens to erase human existence across time. Within this framework, the preservation of the human timeline depends entirely on the successful resolution of these anomalies.

Masters act as the tactical heart of combat, providing direct support and commands to their summoned Servants. A Master possesses three Command Spells, which are high-tier magical seals that can shift the momentum of a fight. These seals require 24 hours to recharge once used. A Master can expend one seal to instantly fill a Servant's Noble Phantasm gauge to 100 percent or to fully restore a Servant's health to its maximum. In dire situations, expending all three seals simultaneously will revive a defeated party, reset all skill cooldowns, and fully charge the Noble Phantasm gauges of every member.

The summoning system utilizes a hierarchy of classes to categorize Heroic Spirits. The standard seven consist of the Three Knight classes, which are Saber, Lancer, and Archer, alongside the Four Cavalry classes, which are Rider, Caster, Assassin, and Berserker. Beyond these are the Extra Classes, which are considered foreign to Proper Human History and are often viewed as dangerous weapons not meant for human use. Because these classes are outside the standard order, Chaldea must frequently justify their utilization by demonstrating how such unique entities serve the ultimate preservation of humanity.