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Icon-exaid.png This article is about a villain in Kamen Rider Ex-Aid and Kamen Rider Ghost. Icon-ghost.png

For The Bugster from Kamen Rider Ex-Aid "Tricks": Kamen Rider Para-DX, see Hatena Bugster (Nazo Toki Labyrinth).

Hatena Bugster (ハテナバグスター, Hatena Bagusutā) is the monster manifested from data of the puzzle game, Hatesate Puzzle, having been born from its developer, Togo Kiyomiya.


The Hatena Bugster is virus conceived from the puzzle game data. Hatesate Puzzle, having been born from its developer, Togo Kiyomiya. He has a quiet and rugged samurai-like personality and speaks little except what is necessary, and after his birth he follows him as an obedient right-hand man to Michihiko Zaizen's orders. Ultimately, Hatena was destroyed by Kamen Rider Ghost Tenka Touitsu Damashii.

Other Events

Kamen Sentai Gorider

Hatena was part of an perpetually reviving army of Bugsters which emerged in the real world as a result of Kuroto Dan's plot to revive in the Game World. This endless horde was held off by Kamen Riders Brave and Snipe, sharing the Gashat Gear Dual β and Hunter Gamer between each other, while Emu Hojo was sent from CR to the Game World to stop Dan. Ultimately, the Bugster horde was suddenly dissipated in an instant as the destruction of the Game World brought about by Kazuma Kenzaki thwarted Dan's ambition to revive.


to be added

Powers and Abilities

Hatena Bugster is an extremely powerful monster. It overpowered Ghost's combination of 15 heroic souls, and even his infinity soul. The Bugster can open a portal to drop explosive blocks on his enemies. It also has the ability to transport Bugsters and their enemies to a proper battlefield of their game, similar to Gamer Driver's Stage Select.


  • to be added


Bugster Virus bacterium.

The Bugsters originate as the microscopic Bugster Virus (バグスターウイルス, Bagusutā Uirusu), a result of humans being contaminated by the Bugster, thus developing the condition known as the Game Disease (ゲーム病, Gēmu-byō).

Hatena Bugster

  • Height: 210 cm[1]
  • Weight: 150 kg[1]

Behind the Scenes


The Hatena Bugster is voiced by Hiroshi Naka (中 博史, Naka Hiroshi). His suit actor is Jiro Okamoto.

Concept Art

Hatena Bugster concept art

Hatena Bugster was designed by Katsuya Terada (寺田 克也, Terada Katsuya).


  • Hatena is one of the few Bugsters whose corresponding game is independent from Genm Corp.
    • Hatena is also the only Bugster to spawn from a game of a modern format, specifically a mobile game app, as most Bugsters are modeled after characters from cartridge games.
  • Ironically, despite being strong enough to effortlessly defeat Kamen Rider Ghost's strongest forms, including a form that combines the power of 15 souls, he ends up being defeated by a form that only combines the power of 3 souls. However, it could be assumed that he spent most of his energy on Ghost's strongest forms, and thus was running on fumes when he was up against Tenka Touitsu Damashii.
    • Another reason may be that the Game Illness of Takeru affected his power drastically.




Icon-exaid.png Kamen Rider Ex-Aid
Kamen Riders
Emu Hojo - Hiiro Kagami (Game World) - Taiga Hanaya - Kiriya Kujo - Kuroto Dan - Parado - Asuna Karino/Poppy Pipopapo - Masamune Dan - Ride-Players (Nico Saiba - Haima Kagami) - Genm (Bakusou Treasure) - Kagenari Nagumo - Ninja-Player - Black Parado
Game Scope - Gamer Driver - Kimewaza Slot Holder - Rider Gashat - Energy Items - Buggle Driver (II) - Bugster Buckle - Gashat Gear Dual (β - Another) - Rider Gauges - Rider Gashat Case - Energy Item Holder
Gashacon Weapons
Gashacon Breaker - Gashacon Sword - Gashacon Magnum - Gashacon Sparrow - Gashacon Bugvisor (II - G) - Gashacon Key Slasher - Gashacon Parabragun
Other Weapons
Flamber Saber - Ride Weapon - Fuma Sōzantō - Genin Weapon
Robot Gamer - Beat Gamer - Combat Gamer - Chambara Gamer - Sports Gamer - Hunter Gamer - Bike Gamer - Burger Gamer - Fantasy Gamer - Simulation Gamer - Maximum Gamer - Safari Gamer - Tank Gamer - Legacy Gamer - Pac Gamer - Famista Gamer - Xevious Gamer - Galaxian Gamer
Asuna Karino - Haima Kagami - Kyotaro Hinata - Ginko Yumita - Nico Saiba - Satsuki Ogimachi - Mizuki Nishikikoji - Tsukuru Koboshi
Others: Saki Momose - Sakurako Dan - Eight Kirino - Saiko Yaotome
Locations: Seito University Hospital - CR - Ministry of Health - Hanaya Game Illness Clinic - Genm Corp. - Game World - Machina Vision - Next Genome Institute
Generals: Parado - Graphite - Ren Amagasaki - Gamedeus
Movie-exclusive: Michihiko Zaizen - Pac-Man Virus - Hatena Bugster - Soji Kuruse - Kazushige Ryuzaki - Ageha Takeda - Johnny Maxima - Nebula Bugster
Stageshow-exlusive: Futago Bugster
Regular Bugsters: Bugster Virus - Bugster Union - Salty Bugster - Aranbura Bugster - Revol Bugster - Motors Bugster - Collabos Bugsters (Gekitotsu - DoReMiFa - Giri Giri - Jet - Kamen Rider Genm series) - Burgermon Bugster - Gatton Bugster - Vernier Bugster - Kaiden Bugster - Charlie Bugster
Regular Games: Mighty Action X - Taddle Quest - Bang Bang Shooting - Bakusou Bike - Gekitotsu Robots - DoReMiFa Beat - Giri Giri Chambara - Jet Combat - Shakariki Sports - Drago Knight Hunter Z - Dangerous Zombie - Mighty Brothers XX - Perfect Puzzle - Knock Out Fighter - Perfect Knock Out - Ju Ju Burger - Night of Safari - Bang Bang Tank - Taddle Fantasy - Bang Bang Simulations - Taddle Legacy - Maximum Mighty X - Kamen Rider Chronicle - Toki Meki Crisis - Hyper Muteki - Doctor Mighty XX - Mighty Creator VRX - Hurricane Ninja - God Maximum Mighty X - Knock Out Fighter 2 - Zombie Chronicle - Mighty Novel X
Legend Rider Games: Let's Go Ichi Gou! - Adventure Guy Kuuga - Agito of the Sun - Mirror Labyrinth Ryuki - Moshi Moshi Faiz - King of Poker Blade - Taiko Master Hibiki - Insect Wars Kabuto - Time Express Den-O - DokiDoki Makai Castle Kiva - Barcode Warrior Decade - Detective Double - Jungle OOO - Space Galaxy Fourze - Magic The Wizard - Toukenden Gaim - Full Throttle Drive - Kaigan Ghost - Kamen Rider Build - Ganbarizing
Legend Games: Pac Adventure - Famista - Xevious - Taiko no Tatsujin - Galaxian
Other Games: Hatesate Puzzle - Buddhist Priest of Temple - Chou Super Hero Taisen - Chou Shocker Taisen - Bakusou Treasure - WayoseTUNE - Nazo Toki Labyrinth