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Icon-kabuto.png This article is about a/an character in Kamen Rider Kabuto.

Riku Kagami (加賀美 陸 Kagami Riku) is Arata and Ryo's father. He is a high ranked official in ZECT, and serves as a figurehead to hide their connection to the Natives.


A mysterious person who quotes animal stories and occasionally the Bible, he is also the police Commissioner. He is a highly trained fencer and plays the cello. Arata seems to despise him because of Ryo's disappearance, as well as the lack of concern or activity done in order to find Ryo. Arata is also unaware that his father is even part of the organization, ZECT, let alone the leader. It seems that he has a very secret agenda and would even sacrifice his sons to achieve his goals. Tendo later confronted Riku; the confrontation ended with Riku telling him that Tendo's sister (actually refers to Hiyori, not Juka) was not in good hands, which naturally made Tendo lose his composure, and Riku walked off, joking about Tendo's "walking down the path to heaven to rule over all".

During the end of episode 36, he displays that he indeed knows about the Hopper Riders, saying they have opened the Gates of Hell. He also says the Rider's grand plan will be completed by our sons, showing that he did indeed know Tendo's father. He tells Kagami of the secrets behind the Masked Rider System in episode 41, displaying his knowledge of the Natives and how they created the system. He also tells Tendo that his father was the one who installed the Red Shoes system (which allows a person to force either of those Riders to act against their will) in the Kabuto and Gatack Zecters, and in turn, Tendo decides to trust him because he too desires to walk the path his father took.

He is overthrown from his leadership position at ZECT by Mishima after he learns of the Red-Shoes system implemented in the Kabuto and Gatack Zecters. Mishima and Negishi realize that Riku is not on their side. He is still alive in the epilogue watching his son grow up. It is likely he is now simply the chief of police.


Riku is shown to be a calm individual without any true emotions to be shown throughout the series progress until Mishima took over the ZECT Foundation. Behind his calm and cunning manner, he is in fact a very loving individual, showing that he cares of Soji Tendo and his sons. His calculative mind almost on par with Soji, showing that he knew Soji in disguise by telling him about how well is his sister during their first encounter, which he knew Soji's weakness was family.


  • Gifted Intellect: As a police Commissioner and leader of ZECT, Riku is a very intelligence and methodical man. His calculative mind almost on par with Soji, showing that he knew Soji in disguise by telling him about how well is his sister during their first encounter, which he knew Soji's weakness was family.
  • Expert Leader: Riku's calm, polite, and great decision to face problem lead many people respect and depend on him, even the Natives who are accepting humanity. This charisma even feared by Mishima and some Worms who recognize him.
  • Master Culinary Judge: Riku once shown to be able to judge the foods which are provided to him so he could serve his guests on big party the best cooking from the chef he deemed fit. This also lead Riku somehow own an illegal dark cooking duel ring and becoming the judge of it.


  • Even though he is portrayed as somewhat of a villain who wants to bring down Kabuto and the other Riders not affiliated with ZECT, he reveals to Kagami that he has always been on the side of humanity. It is possible that he always knew that Mishima and Negishi were not to be trusted, but too powerful to confront, so he continued an agenda that fit to their favor, hoping Kagami and Tendo would find a way to kill the Worms and stop the Natives.


Icon-kabuto.png Kamen Rider Kabuto
Masked Rider System Users
Soji Tendou (alternate) - Arata Kagami - Daisuke Kazama - Tsurugi Kamishiro - Sou Yaguruma - Shun Kageyama - Masato Mishima - Soji Kusakabe
Movie-exclusive Riders: Issei Kurosaki - Hidenari Oda - Tetsuki Yamato
Transformation Devices
Rider Belt - Rider Brace - Drake Glip - Sasword Yaiver
The Zecters
Kabuto Zecter - Gatack Zecter - TheBee Zecter - Drake Zecter - Sasword Zecter - Hopper Zecter - Dark Kabuto Zecter - Hyper Zecter
Kabutick Zecters
Hercus Zecter - Ketaros Zecter - Caucasus Zecter
ZECT Kunaigun - Kabuto Kunaigun - Gatack Vulcan - Gatack Double Calibur - Drake Glip - Zectmizer - Perfect Zecter - Sasword Yaiver - Sasword Antenna - Blood Vessels - Anchor Jack - Zector Needle
Kabuto Extender - Gatack Extender - Machine Zectron
Hiyori Kusakabe - Jyuka Tendou - Yumiko Takemiya - Gon - Jiiya
Other allies: Takeshi Hongo
Riku Kagami - Masato Mishima - Renge Takatori - Yuzuki Misaki - ZECTroopers
The Natives: Daigo Tachikawa - Shuichi Tadokoro - Negishi - Masato Mishima - Hiyori Kusakabe
Worms: Aracnea Worms (Aracnea Rubor - Aracnea Flavus - Aracnea Nigritia) - Lanpyris Worm - Bellcricetus Worm - Epilachna Worm - Pulex Worm - Verber Worms (Verber - Verber Rota) - Coleoptera Worms (Coleoptera Aeneus - Coleoptera Croceus - Coleoptera Argentum) - Musca Worm - Sectio Worms (Sectio - Sectio Acuere) - Formicaalubus Worms (Formicaalubus - Formicaalubus Oculus - Formicaalubus Maxilla) - Brachypelma Worms (Brachypelma Aurantium - Brachypelma Viridis) - Tarantes Worm Purpura - Geophilid Worms - Acarina Worms (Acarina - Acarina Amber) - Viella Worm - Sepultura Worm - Genomyas Worm - Culex Worm - Foliatus Worm - Cammarus Worm - Camponotus Worms (Camponotus Oculus - Camponotus Maxilla) - Cochlea Worm - Leptophyes Worm - Subst Worm
Executive Worms: Uca Worm - Cassis Worm