Gai Amatsu

"This is going according to my scenario. 100%... no, 1,000%."

- Gai explains his plan to Yua Yaiba to take over Hiden Intelligence.

Gai Amatsu (天津 垓) is the CEO of Zaia Enterprise who wishes to take over the world using the Ark, and is willing to manipulate Aruto Hiden and Hiden Intelligence to do so. As Yua Yaiba's superior, he is the secret benefactor of A.I.M.S., with his company producing much of the agency's technology. After MetsubouJinrai.net's defeat, it paved the way for him to become Kamen Rider Thouser (仮面ライダーサウザー).

Conspiracy About Daybreak Town Accident
Gai was a leading element in development of Ark, the special A.I. system that was supposed to manage the technology of Daybreak Town, especially HumaGears. However, Gai entered such data into Ark that let its A.I. determine the destruction of humanity. This lead Ark to create MetsubouJinrai.net and cause several HumaGears to go berserk. It was only because of Hiden Intelligence employee Satoshi Sakurai that the HumaGears were stopped. However, Daybreak Town got destroyed and Gai's ambitions apparently failed.

First Revelation
to be added

First Meeting with Aruto Hiden
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Zero-One's Evolution: Shining Hopper
to be added

Taking Over Hiden Intelligence
After the destruction of Jin, Yua confirms to Gai that Metsuboujinrai is over. However, Gai tells that Metsuboujinrai will never end as long as the Ark still exist and tells Yua about everything he knows prior to the Daybreak Town Accident. Yua in horror notices that Gai has planned everything from the start and doesn't care about her alongside Isamu. Gai leaves her as he proceeds to the next phase.

After Aruto and Isamu have destroyed Dodo Magia and Berotha Magia, the press conference calls on Aruto and demands the truth on how there are still HumaGears rampaging. Gai interrupts the conference and claims that Aruto doesn't know everything and presents himself to take over Hiden Intelligence to take care of the HumaGear problems without Aruto's concern. In satisfaction of winning everything, he goes back to his room, takes out the Zaia ThousanDriver, and self proclaims that his era is now coming.

Personality
Though not much about Gai's personal nature is known, he is shown to be a very cunning person. He had been manipulating most of the events and their elements till now, whether it be creating the lethal MetsubouJinrai.net or sending Yua Yaiba to spy on the other Riders. A ruthless capitalist, Gai is shown to be seeking to take over Hiden Intelligence and dominate the world of technology and HumaGears.

Kamen Rider Thouser
Kamen Rider Thouser

"Zetsumetsu evolution! PerfectRise! When the five horns cross, the golden soldier Thouser is born. Presented by Zaia."

- Transformation announcement

Rider Statistics Ability Parameters Thouser's primary form is accessed by using the Amazing Caucasus Progrise Key and the Awaking Arsino Zetsumerise Key together in the Zaia ThousanDriver.
 * Rider Height:
 * Rider Weight:
 * Punching Power:
 * Kicking Power:
 * Maximum Jump Height:
 * Maximum Running Speed:

This form has three finishers:
 * Zaia ThousanDriver finishers:
 * Thousand Destruction: TBA
 * Thousand Break (サウザンドブレイク): TBA
 * Progrise Break: Uses any Progrise Key to perform a finisher.


 * Thousand Jacker finishers:
 * Jacking Break (ジャッキングブレイク): TBA
 * Hacking Break (ハッキングブレイク): TBA
 * Thousand Break (サウザンドブレイク): TBA

Appearances: Reiwa The First Generation, Zero-One Episodes 17

Devices

 * Zaia ThousanDriver - Thouser's transformation device.
 * Progrise Keys
 * Zetsumerise Keys
 * Progrise Holder
 * Thousand Jacker - Thouser's personal weapon

Relationships

 * Yua Yaiba/Kamen Rider Valkyrie: Gai and Yua's personal relations are currently unknown. In ZAIA, Yua is Gai's right hand, influencing A.I.M.S. and spying on Hiden to further his own agenda. Yua does secretly doubt Gai's vision for the future, but she's powerless to do anything about it.
 * Aruto Hiden/Kamen Rider Zero-One: Gai considers Aruto as his rival and secretly monitors his progress for his own projects. During their first meeting, Gai coerces Aruto to sold Hiden Intelligence to him. Gai also discreetly tries to defame Hiden in public by setting Rampaging Magias across the city after MetsuboJinrai.net threat ends, before exclaiming that ZAIA will buy Hiden to solve the Humagears problem, furthering the animosity between the two CEO's.


 * Isamu Fuwa/Kamen Rider Vulcan: Gai doesn't care about Isamu, as he isn't part of ZAIA's plans for now. When Yua asks him about Assault Wolf's dangerous side effects, he says that all they can do is to leave him alone and watch him. Isamu seems suspicious of ZAIA and their goals, and in turn, Gai.

Portrayal

 * Gai Amatsu is portrayed by Nachi Sakuragi (桜木那智).

Etymology

 * His first name Gai (垓) is a numeral character which means 108 in Chinese and Japanese.