Shinobu Katsuragi

was a former astronaut and Takumi Katsuragi's father who faked his death to fight Evolto. After being discovered alive by Sento Kiryu, he used a prototype version of to secretly develop a plan that would ultimately assist his son. 
==History==
===Background===
Shinobu Katsuragi was the husband of Kyoka Katsuragi and the father of Takumi Katsuragi. He was the leading member of Mars exploration group, the Kiwami Project. Shinobu discovered that the Pandora Box housed members of the malevolent Blood Tribe. Prior to this, when he was working with Namba Heavy Industries, Shinobu had been aware of the existence of aliens while examining Ryuga Banjo's abnormal physiology.
After the Sky Wall Disaster that split Japan into three nations, Shinobu was blamed by the public as he was responsible for the Pandora Box. Although it was believed he had taken his own life, he survived due to Evolto's intervention. Shinobu would restoring the Evol-Driver at Evolto's request. He began designing the Rider System based on the Evol-Driver and developing the Lost Bottles.
===Present Day===
Shinobu Katsuragi continued to work with Evolto from the shadows. He keeps up to date with his son's growth as "Sento Kiryu" as he fights alongside Ryuga Banjo. As Sento becomes aware that his father is still alive, Shinobu decided to make his presence known by using the prototype Build Driver to act as another Kamen Rider Build. Shinobu reveals his intent to collect the Lost Bottles and fights the heroes, turning a Vernage-possessed Misora into the CD Lost Smash. Despite Sento's hesitation to face his father, he affirmed that he'll be better than his father, and defeat Evolto.
After Kazumi Sawatari and Gentoku Hiromu raided Faust's base to gain a Nebula Gas dose, Sento and Banjo came to their rescue. While confronting his son again, Shinobu immobilizes him by targetting the Hazard Trugger and sent Build away using NinninComic. While he claims that Sento escaped, Evolto was left suspicious over his true allegiances. Shinobu expressed his desires to create a "new world" using the Black Panel. After the Kamen Riders attempt to destroy Evolto using the Blizzard Knuckle, Shinobu arrived with a large container and took three the Lost Bottles left in the aftermath. He places the Evol-Driver inside the container as it had Evolto's remaining genes.
Shinobu finally revealed his ruse and confirmed he was only working close Evolto to foil his plans. He revealed that once the Black Panel is complete, he would possess the power to warp the world. Shinobu admitted his actual goals was to create a "new world" that transcends the laws of physics. Although Sento wasn't sure to forgive him, Shinobu would eventually be poisoned by Evolto over his betrayal. In his final moments, Shinobu revealed to his son about the secret White Panel that Evolto isn't aware of. As he remarked how his son had gotten taller, he disintegrated into Sento's arms.
===Legacy===
Sento Kiryu and Takumi Katsuragi would often talk about their father, discussing whenever Shinobu's actions were right or wrong in order to justify their own. Although Takumi would berate his father over his betrayal, Sento was willing to forgive him as he knew their father still had good intentions. Despite "Sento" being virtually a new personality and not the son he raised, Shinobu still loved Sento like he had always been his own.
Having performed a successful maintenance check on Kamen Rider Evol's system, Evolto deemed Nariaki Utsumi a worthy replacement for the late Katsuragi. Soon after, Kazumi Sawatari took the elder Katsuragi's prototype Build Driver, so he could utilize the full power of the Grease Blizzard Knuckle and North Blizzard Fullbottle for the coming battle at the Pandora Tower, at great risk to himself.
Shinobu's dream of creating a "new world" that transcended the rules of physics would be fulfilled by Sento as he finally discovered a way to unlock the White Pandora Panel, using it together with the Black Pandora Panel to create a world without Evolto and Skywall, only a peaceful new Earth.
==Other Events==
===Kamen Rider Build: Be The One===
In one of Sento Kiryu's memories with Shinobu Katsuragi, he remembered his father asking Takumi if he wanted to help his father prevent an alien invasion should the time come, with the boy replying with yes. During the Sky Wall Disaster, the entire public went into tatters. During the commotion, Shinobu told his son that the only hope for Earth's future was Ryuga Banjo himself. Takumi asked his father why he was doing all this, and he replied that he was doing it for "love and peace" before running off.
While doing further research into Shinobu Katsuragi's research files, Sento learned that any two Fullbottles transformed due to this Hazard Level 7 will be able to create a Best Match. From his research, he was able to understand why he mentioned Ryuga Banjo was the hope for Earth's future after joining forces with him as Cross-ZBuild.
===Kamen Rider Build NEW WORLD===
After the merging of the two worlds, Shinobu Katsuragi, along with his son Takumi, are alive in the New World, the latter now a separate individual from Sento. After Killbus re-activated Pandora's Box from the White Pandora Panel, Shinobu, his family, along with everyone who was previously exposed to Nebula Gas recovered their memories from the original World of Build.
After the incident, Shinbou worked with Gentoku Himuro in creating the Build Driver as a defensive measure for possible threats similar to the Blood Tribe, until it was stolen by one of Shinobu's previous scientists, Keiji Uraga, who also regained his memories from the other world. He also treats Sento as his "other son", presumably meaning their relationship remained close.
==Personality==
Prior to Sky Wall Incident, Shinobu was a good-hearted man that cared for his son a lot. However, since he was the nearest to Pandora Box during the Sky Wall Incident, Shinobu's good nature was gone, him becoming a cold-hearted person with no qualms to do inhumane experiments as shown when he simply said that Misora could just die if Vernage was defeated. He also became nihilistic, as he openly admitted that he faked his death to his son and his wife, after siding with Evolto and supporting his plan to create a new world.
However, Shinobu's affiliation with Evolto is actually a ruse, while under the pretense of allying himself with the latter was to give Sento enough time to delay his plans.
==Abilities==
* Genius-Level Intellect: To be added
* Master Scientist: To be added
* Master Engineer: To be added
* Expert Tactician: To be added
* Expert Deceiver: To be added
==Forms==
As the inventor and original intended user of the Build Driver, Shinobu Katsuragi can use the full potential of the Rider System. Since his Hazard Level is much higher, the stats reflected are much higher than when Sento Kiryu had used them. As Shinobu's Build Driver is a prototype based on the original schematics, it does not announce Best Matches.
==Equipment==
===Devices===
*Build Driver - Transformation device.
*Fullbottles - Transformation trinkets.
*Fullbottle Holder - Carrying strap for Fullbottles.
===Weapons===
;Handheld Weapons
*4Koma Ninpoutou - Build's katana-like weapon accessed by any form that uses the Ninjya or Comic Fullbottles.
*Kaizoku Hassyar - Build's bladed bow-like weapon accessed by any form that uses the Kaizoku or Densya Fullbottles.
;Suit-Equipped Weapons
*Rabbit Foot Shoes - Build's rabbit-like spring shoe accessed by any form that uses the Rabbit Fullbottle.
*Tank Roller Shoes - Build's tank-like tread shoe accessed by any form that uses the Tank Fullbottle.
*Onmitsu Scarf - Build's ninja scarf accessed by any form that uses the Ninjya Fullbottle.
*Train Gauntlet - Build's train-like wrist guard accessed by any form that uses the Densya Fullbottle.
==Relationships==
===Family===
Kyoka Katsuragi.png|Kyoka Katsuragi - Wife
Takumi Katsuragi.png|Takumi Katsuragi - Son
Sento Kiryu Grease.png|Sento Kiryu - Son
==Behind the Scenes==
===Portrayal===
Shinobu Katsuragi was portrayed by . As Kamen Rider Build, his suit actor is .
==Notes==
*As Build, Shinobu has demonstrated the ability to disguise his voice via voice modulation similar to that of the Transteam System, something that was not demonstrated by the primary user.
*Shinobu's given name is written with the kanji meaning "conceal" or "hide", which reflects his character in two ways:
**Firstly, it references the fact that he spends most of the series in hiding, supposedly having died when the Skywalls first emerged.
**Secondly, it highlights his preference for Build's NinninComic Form; "Ninja" is written with the same kanji and directly translates as "one who hides".
==Appearances==
==Navigation==
ru:Шинобу Кацураги
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