Ryunosuke Momose

was a geneticist and former Shocker scientist from the year 1971 who found himself stranded in 2071. With the help of George Karizaki, he transforms into and travels back to 2021. 
==History==
===Background===
Ryunosuke Momose was born on December 9, 1938 in Nagasaki, Japan. In March of 1964, he received his Ph.D. in genetics and began teaching at various universities. At some point in his life, he married a woman and had a son, Hideo Momose. By 1971, he had published several dissertations on his work, but his experiments were dismissed as "demonic". His work caught the attention of an unnamed Shocker executive, who recruited him into Shocker for his expertise. During his time at Shocker, Ryunosuke was well aware that his work on remodeling humans into various Shocker Kaijin was evil. 
One day, Ryunosuke met with a recently captured Takeshi Hongo, who reminded him that science is meant to bring peace and happiness. During Hongo's operation, Ryunosuke administered the electrical current that modified Hongo into the Kamen Rider. Ryunosuke then learned that Hongo had escaped Shocker and began using his powers to fight for justice. Inspired by Hongo's belief for science and justice, this motivated Ryunosuke to escape from Shocker. He was unfortunately captured and his body was used to revive the demon, Diablo. With the experiment deemed a failure, Ryunosuke was sent inside a spaceship and left to drift for eternity in the depths of outer space. 
Ryunosuke's space journey was cut short after his spaceship entered a wormhole and crash-lands on Earth in 2071, about 100 years after his own time. He found out that Diablo had succeeded in conquering humanity and founded his own city, Devil City. He is rescued by an elderly scientist named George Karizaki, who explains that in order to save the world, someone must time travel to 2021 and prevent Diablo from conquering Earth. To do that, Ryunosuke had to transform into a Kamen Rider using the Cyclotron Driver alongside a blood relative to assist Revice and Saber in stopping Diablo and change the future.
===Kamen Rider: Beyond Generations===
Once Ryunosuke arrived in 2021, he became an immediate target for Diablo, who had just been revived in present day. Ryunosuke reunited with his now-adult son Hideo, who was forced to transform into Century with him. However as a result of their minds being completely out-of-sync, the transformation resulted in them entering their Century Break Form, a berserk-state. They break free of his transformation, through combined efforts of Revi, Vice, Saber, and Blades. Ryuunosuke then asked Hideo to transform again, but his son refused to associate with his father, who supposedly abandoned him when he was a child. 
When Diablo attacked again, Ikki and Vice took Ryunosuke to safety. Ryunosuke explained his backstory and the circumstances that led to him time traveling, stating that Diablo had to be defeated in the year 2021, after his rebirth but before reaching his full form. He didn't want to involve Ikki and the others due to the fact that this was his penance for abandoning his family. Ryunosuke then flickered, saying that his physical body in 2071 was unguarded. Ikki convinced Ryunosuke to accept his help and takes him to see George at Fenix.
As planned, Ryunosuke sent Touma, Rintaro, Daiji, Sakura, and Vice into the future, while attempting to resolve his differences with Hideo. Ryunosuke told Hideo that although he can't take back the past 50 years, he can at least secure the future for his grandson instead. He showed him the ticket stub he never discarded, and the two reconcile. The two join Ikki in battle and transform into the Kamen Rider Century to confront Diablo. This allowed Ryunosuke's body in 2071 to repel the Devil Rider Corps and revive the group that was sent to the future. Alongside Revice Neo Batta Genome and Xross Saber, Century is able to completely vanquish Diablo and change the future.
However, this created a paradox where Ryunosuke had no reason to come from the future, causing Ryunosuke to vanish from existence. After telling Hideo to ride the bullet train with Shinichi, Ryunosuke was visited by the soul of the young Takeshi Hongo. He apologized for performing the modifications, but Takeshi assures him that he is grateful for the operation that gave him the power to confront evil and that every Kamen Rider will inherit Ryunosuke's spirit to fight for humanity forevermore. Ryunosuke thanked Touma and Ikki for being willing to carry on the Rider legacy and smiled at his son before disappearing without any regrets.
==Kamen Rider Century==
==Equipment==
===Devices===
*Cyclotron Driver - Transformation device
==Relationships==
===Family===
Hideo Momose.png|Hideo MomoseSon
Shinichi Momose.png|Shinichi MomoseGrandson
Mrs. Momose.png|Unnamed wife
==Behind the Scenes==
===Portrayal===
*Ryunosuke is portrayed by .
==Appearances==
* Kamen Rider: Beyond Generations
**Original Story Book: From 2071/Record Of a Certain 7 Days
==External Links==
to be added
==Navigation==
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