Fu Washio

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 was the older brother of Rai Washio, one of Namba's children hailing from Seito. He was able to transform into the turquoise Kaiser, .
==History==
===Background===
Fu Washio is the older brother of Rai Washio hailing from Seito. Both brothers were amoung several orphans adopted by Namba Heavy Industries President, Juzaburo Namba. As one of the "Namba Children", he pledges absolute loyalty to Namba Heavy Industries. It is there where Fu and Rai were indoctrinated and trained as soldiers.
===Japanese Civil War===
Fu and Rai made their first presence during Seito's invasion on Hokuto after Kiba defeats Seito Guardians as Owl Hazard Smash. They quickly defeat the latter as Engine and Remocon Bro's easily and taunt Kazumi Sawatari to become Seito weapon, if he wants Kiba to live. After they torture Kiba, Kazumi arrives with Akaba where he rejects Rai offer. When Grease and Akaba tried to escape with Kiba, Fu had the upper hand until Kiba shielded him. As Kazumi and Akaba reach the Touto borders, Sento Kiryu and Ryuga Banjo awaited to battle the Washio brothers, until they were finally aided by Kamen Rider Rogue. 
Joining Seito's forces in an attack on the Touto government office, the Washio brothers covered Rogue as he went in to claim the Pandora Box, engaging Kamen Riders, Cross-Z Charge, Grease and Build before the latter caught up with Rogue. Eventually, the Kaisers succeeded in defeating Cross-Z Charge and Grease.
Alongside Rogue, the Washio brothers represented Seito in a three-stage proxy battle with Touto. With Rai having been defeated by Grease in the first round, Fu used his Gear Engine along with his own Gear Remocon to transform into the Hell Bro's as he faced Cross-Z Charge in the second round. Though surprised to find his greater power matched by Cross-Z Charge as his opponent grew continually stronger, Fu was able to goad Ryuga into letting his guard down by claiming that his brother had been taken to custody and scheduled to be terminated should he fail. Fu used Ryuga's hesitation to knock him out of the battle, after which Rai appeared unharmed to gloat with his brother.
===The Evolto Revolution===
Although the war between Touto and Seito had come to a close with the proxy battle, Blood Stalk decided to press on used the completed Pandora Box to transfigure Sky Wall into the Pandora Tower after inserting the Fullbottles into the Panels. As Seito continued their invasion on Touto, the Washio brothers accompanied Stalk at the Touto-Hokuto border and combatted Build, Cross-Z Charge, and Grease. Although Rai held Misora hostage, they were forced aside by the presence of Vernage who took control of Misora's body and took the Kamen Riders away from the battle.
The Washio brothers continue to accompany Blood Stalk as the Kamen Riders stormed the Pandora Tower to reclaim the Pandora Box from Seito's custody. After Rai gets defeated, Fu receives his brother's Gear Engine to become Hell Bro's once more. While Blood Stalk arrives to create a new battlefield using the Pandora Box, Hell Bro's continues to engage Build until he was eventually immobilized from his defeat by Build TankTank Form, and the Kamen Riders continue pursuing Stalk and reclaim the Pandora Box.
===Final Battle And Death===
After Evolto declares his intentions to rule the world to Namba, Nariaki Utsumi decides to strengthen the Washio brothers by injecting them with an extra dose of Nebula Gas, that puts them in risk of disintegrating their bodies. However, even with the conditioning and temporary alliance with the Kamen Riders, Kamen Rider Evol Black Hole is still too much for them to handle. After Evol kills Rai with one of his black holes, a grief-stricken Fu transformed into Hell Bro's and fights Evol head on. However, Evol manages to defeat him and Cross-Z Magma. As Evol is about to kill Ryuga, Fu had a change of heart after seeing Ryuga fighting for them decides to save him, taking the hit from Evolto's attack. Ryuga Banjo questioned why he saved him, and Fu replied that fighting for other people isn't bad, and that he will teach this lesson to his brother.
===Post-mortem===
Despite not showing in the new world, it is implied that Fu (alongside his brother Rai Washio) was also revived in new world after world merging incident.
==Personality==
Compared to his brother, Fu is more calm and collected. He rarely speaks, unless when needed. He also prone to making lies, as shown when he told Banjo that if he loses, Rai will be killed. After he defeats Banjo, he shows no remorse and calls him scrap for being too gullible. Both Fu and Rai are cruel and ruthless, and like to torture their defeated opponents.
However, Fu is shown to be a caring brother for Rai, devastating when he has to witness Rai dies right in front of him. Unlike his brother, Fu still shows some humanity in him, sacrificing himself to save Ryuga from Evol after Ryuga previously saving him from Evol as well.
==Forms==
==Equipment==
===Devices===
*Nebulasteam Gun - Transformation device and personal weapon. Shared with Engine Bro's.
*Gears -Transformation trinkets
*Fullbottles - Used for special attacks
===Weapons===
*Steam Blade - Standard sidearm weapon. Can combine with the Nebulasteam Gun to form the Nebulasteam Rifle. Shared with Engine Bro's
==Behind the Scenes==
===Portrayal===
Fu Washio is portrayed by . As Remocon Bro's, his suit actor is .
As a teenager, he is portrayed by , son of veteran suit actor Seiji Takaiwa.
===Etymology===
The Kanji that makes up Fu's first name (風) translates to "wind". This also explains the meaning behind his calm personality: "Calm like the wind".
==Notes==
* If the Washio Brothers' first names combined, the two words formed "Furai" (フライ) which means "sound of the wind". It mixes the two personalities: "Calm and loud like the thunderous wind".
==Appearances==
==References==
==Navigation==
ru:Фу Вашио
Category:Build Characters
Category:Villains
Category:Deceased
Category:Antivillains
Category:Heroes
Category:Evil turns good
Category:Debatable Riders
Category:Build Riders
Category:Namba Heavy Industries Ltd.
Category:Generals