Boku no Hero Academia: The Shirai Ryū Hero: Scorpion

History of the Shirai Ryū

Izuku Midoriya: The Shirai Ryu (Kanji: 白井流; lit. "White Well Style") are a clan of Japanese ninjas in the Earthrealm universe credited with bringing ninjutsu and other secret martial arts to Japan from China.

History
SHIRAI RYU DON'T FEAR DEATH, WE EMBRACE IT!
For years, they were bitter rivals with the Lin Kuei, from which they had originally sprung. They were eventually wiped out by the necromancer Quan Chi, who destroyed all of the members of the clan (Hanzo Hasashi, also known as Scorpion, was murdered by the elder Sub-Zero prior to this).
The Shirai Ryu was formed many years ago by a Lin Kuei warrior named Takeda. He eventually grew tired of the Lin Kuei and left the clan. However, leaving the clan is punishable by death, and Takeda was sought after by Lin Kuei assassins. He left China and returned to his homeland in Japan, where he offered his services to the lords and generals. His art gradually spread throughout Japan and developed into the art of ninjutsu. In addition to teaching his new art form, he also taught modified versions of Lin Kuei tactics, as well as revealing many of their secrets. This only further infuriated the Lin Kuei when Takeda's teachings became well-known with many followers throughout Japan. His followers became known as the Shirai Ryu.

The Shirai Ryu and the Lin Kuei became tremendous rivals. Takeda's clan mocked the Lin Kuei by dressing in similar outfits of yellow color and teaching modified versions of their own secrets. While Takeda managed to avoid many assassination attempts well into his later years, he was eventually killed by poison in his tea. It was never known if the Lin Kuei was responsible for his death. The animosity between the Lin Kuei and Shirai Ryu continued after his demise, as the Shirai Ryu became more prominent.

After the Shirai Ryu were reformed by a fully resurrected Hanzo Hasashi (Scorpion), the clan now dedicates itself to protecting Earthrealm and aiding those victimized by others through recruiting them into the Shirai Ryu. Most recently, the animosity between the Shirai Ryu and the Lin Kuei has been resolved peacefully when the grand masters of both clans, Hanzo Hasashi and Kuai Liang (Sub-Zero), met to discuss their clan's history and relationship. All animosity between the clans was dispelled when Sub-Zero revealed that only a few (corrupt) Lin Kuei were involved in the first Shirai Ryu massacre as they secretly hired Quan Chi to destroy the clan in exchange for their services in the future. Sektor had allied with Quan Chi for the first Shirai Ryu's destruction, starting the raid by igniting fires in the territories and the two would later frame Bi-Han for their crimes.

Original Timeline

Mortal Kombat Mythologies: Sub-Zero

During the events of Mortal Kombat Mythologies: Sub-Zero, the sorcerer Quan Chi hired members from both rival clans to find the Map of Elements giving directions to the Amulet of Shinnok: Lin Kuei warrior Bi-Han and Shirai Ryu member Hanzo Hasashi were the members of the clans respectively chosen for the task. Quan Chi had originally sent Bi-Han to find the map, but he had also sent Hasashi in the event that Bi-Han failed in his arduous quest. Neither warrior knew of the other's involvement until they discovered each other in the room of the Shaolin Temple containing the map and immediately engaged each other in battle. Bi-Han won the battle with his ice-powers, killing Hanzo in the process, and retrieved the map. He gave the map to Quan Chi, and as payment to the Lin Kuei, he wiped out the rival Shirai Ryu clan bringing the clan leader bones.

Hanzo returned from death as Scorpion, and met his murderer in the Netherrealm, where Bi-Han had gone to stop Quan Chi from releasing the fallen Elder God Shinnok. The two engaged in a rematch of their earlier battle with Bi-Han once again emerging as the victor. Unable to exact his revenge, Scorpion waited until Mortal Kombat, where he battled Bi-Han for a third time. This time, Scorpion would be victorious and finally avenged his own death by killing Bi-Han. Bi-Han was reborn in the Netherrealm as the demon Noob Saibot, only to have his younger brother take his place in future tournaments using the Sub-Zero name.