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Villains Wiki

Kaiden Bugster is a Bugster who emerged from the data of samurai-themed game called Giri Giri Chambara and an antagonist in Kamen Rider Ex-Aid.

He was voiced by Otoya Kawano.


The Kaiden Bugster first emerged from Heiji Uesugi, a detective investigating Zero Day due to the death of his son during it. Kaiden spawned from him after he developed stress from being unable to solve the case. After being fought off by Kamen Rider Brave, Kaiden retreated back into Uesugi.

Kaiden later emerged again from Uesugi from his stress on the lack of progress he had made on the case. Fighting Brave again, Kaiden was defeated by the Kamen Rider with a Drago Knight Critical Strike. His debris was promptly collected by Kuroto Dan with the Gashacon Bugvisor.

Kaiden would go on to emerge again at Level 40 from a member of the band Neironzu. He ended up being destroyed again by Kamen Rider Snipe.

Kaiden was later used by Parado to complete Kamen Rider Chronicle, appearing as a boss within the game. He was destroyed by Ride-Player Nico. His powers were later channeled by the final boss of the game, Gamedeus.


           EX-AID LOGO.png Villains

Executives: Gamedeus | Parado | Graphite Bugster | Kuroto Dan | Lovelica Bugster | Black Parado
Minor Bugsters: Salty Bugster | Alhambra Bugster | Revol Bugster | Motors Bugster | Gatton Bugster | Vernier Bugster | Kaiden Bugster | Charlie Bugster

Genm Corp.
Masamune Dan | Kuroto Dan | Ren Amagasaki | Hiiro Kagami

Next Genome Institute
Dr. Pac-Man | Soji Kuruse | Kazuhige Ryuzaki | Ageha Takeda | Saiko Yaotome

Foundation X
King Dark's Hologram | Kaisei Mogami | Foundation X Guardians
Beast Rider Squad: Kamen Rider Ouja | Kamen Rider Tiger | Kamen Rider Sasword | Kamen Rider Dark Kiva | Kamen Rider Beast

Machina Vision
Johnny Maxima | Kagenari Nagumo | Ninja-Players

Totema | Shocker Greeed | Hiruchameleon | Experimental Wolf Man | Kani Laser | Tiger-Roid | Mogura-Roid | Yamaarashi-Roid | Suddendath Beta | Space Ikadevil | Space Spider Man | Urga | Buffal | Shocker Combatmen

Taiga Hanaya