Fu Washio

1="Jundou."

- Transformation phrase

2="You think you can beat us alone? That make me upset."

- Fu's response to the Owl Hazard Smash challenging him and his brother.

3="We're the ultimate weapon of Namba Heavy Industries Ltd., how could we become a scrap so easily?"

- Fu reveal the Kaisers' origin to Ryuga.

Fu Washio (鷲尾 風) is the older brother of Rai Washio, one of Namba's children hailing from Seito. He is able to transform into the turquoise Kaiser, Remocon Bro's (リモコンブロス).

Character History
Little is known about Fu's past, but he and his brother were raised by Juzaburo Namba institute as his 'Children'. There, Fu and Rai were indoctrinated and trained as soldiers.

Fu, along with Rai was first shown at Hokuto after Kiba defeats Seito Guardians as Owl Hazard Smash. They quickly defeat the latter as Engine and Remocon Bro's easily and taunt Grease to become Seito weapon, if he wants Kiba to live.

After they torture Kiba, Kazumi and Akaba arrives and Kazumi rejects Rai offer and fight him as Grease. Grease, along with Akaba and Kiba escapes, but later shot by Fu using Nebulasteam Rifle. Fu's about to kill Grease, if Kiba didn't took the bullet for him. Akaba later helps his boss escape once more, to Sky Road where Sento and Banjou awaits.

As Washio brother finally caught up to them, Sento and Ryuga fights them as Build Rabbit Tank Hazard (later Rabbit Tank Sparkling) and Cross-Z Charge respectively, until Rogue make his appearance.

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 the Sclashjelly Kamen Riders.

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.

Personality
Compared to his brother, Fu is more calm and collected. He rarely speaks, unless when needed. He also prone to make lies, as shown when he told Banjou that if he lose, Rai will be killed. After he defeats Banjou, 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.

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

Portrayal
Fu Washio is portrayed by Osamu Adachi (足立 理). As Remocon Bro's, his suit actor is Kotaro Kaji (鍜治 洸太朗).

As a teenager, he is portrayed by Shinta Takaiwa (高岩 芯泰), 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".