Icon-exaid.png This article is about a/an monster in Kamen Rider Ex-Aid.

"Commencing the Operation!"
―Vernier's take off[src]

"Out of Fuel! Temporary Landing!"
―Vernier's landing[src]

"All who get in the way will be bombarded!"
―Vernier's Mission[src]

Vernier Bugster (バーニアバグスター Bānia Bagusutā) is the monster born from data of the combat flight simulator game, Jet Combat.

As recorded by CR, Vernier is part of the Mid Tier of Bugsters within Kamen Rider Chronicle: alongside Gatton, Kaiden and Poppy. The Forbidden Continue!?

Character History


The boss of the Genm Corp. game Jet Combat, the character of Vernier was conceived by Kuroto Dan, the teenage son of Genm CEO Masamune Dan. As a Bugster, Vernier's origin is traced to the Y2K bug, which left what would be known as the Bugster Virus on the younger Dan's computer shortly following New Year's 2000. Secretly incubating the virus by infecting the young Emu Hojo with it, Kuroto Dan would arrange for its matured form to be extracted by Michihiko Zaizen ten years later, using it to execute the Zero Day incident in the following year.

Initial Emergence

Over five years after Zero Day, the Vernier Bugster emerged from Daisuke Egami's Bugster infection after he became worried over embarrassing his date by being too scared of the amusement park rides. Vernier briefly fought Brave Fantasy Gamer Level 50, but had to retreat within the patient after wearing out. He reemerged as Daisuke's feeling of inadequacy returned, intent on targeting Daisuke's to-be date, but he was Stage Selected away along with Emu by Kuroto. He tried fighting Snipe Simulation Gamer Level 50, but was destroyed by Bang Bang Critical Fire, his debris collected by Genm with the Gashacon Bugvisor. Take Off Against the Direction of the Wind!

The Bugster Horde

Vernier 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 was sent from CR to the Game World to stop Dan. Maze 2: Escape 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. Maze 3: Gorider Forever

Kamen Rider Chronicle

Vernier was revived among an assembly of all component Bugsters through the Gashacon Bugvisor by Parado as he commenced Kamen Rider Chronicle, in which Vernier would serve as the boss representing Jet Combat. Go Together, Embracing Your Ambitions!

Nico Saiba was afflicted with the Vernier strain of the Bugster virus upon joining the game as a Ride-Player. Learning that Vernier had been sighted, Nico transformed again to join the fight against him and cure herself. Though accompanied by the Kamen Riders, Nico fought alone as they were confronted by the Lovelica Bugster and, distracted by the sight of the doctors being overwhelmed, was forced out of her transformation by Vernier's firepower. Stepping in to cure Nico, Taiga transformed again into Kamen Rider Snipe Simulation Gamer Level 50 and destroyed Vernier with the Bang Bang Critical Fire. Love & Peace for the Winner!

Vernier finally re-emerged alongside Gatton and was defeated by the Ride-Player Nico, supported by Taiga, earning her the Gashatrophy of Jet Combat. Strongest VS Strongest!


Vernier has a simple personality, trying only to stress Daisuke and become a complete being with little focus on interacting with the Riders trying to stop him beyond fighting them. This, however, may instead reflect his lack of screen time more than his actual character.


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).

Vernier Bugster

Level 30 (レベル30 Reberu Sātī): Vernier's full form, which overtakes Daisuke's body when the infection is strong enough.

VerniAssault Jet (バーニアサルトジェット Bāniasaruto Jetto)
A flight unit on its back as means of Vernier's flight transportation.
Jet Turbine
On the right arm turbine, Vernier can unleash an electromagnetic tornado.
Drone Units
Verinier has the ability to summon a swarm of small gray Combat Gamers, each of which is armed with a pair of Gatling guns.
Machine Gun
Resting on Vernier's right shoulder is a machine gun for ranged combat purposes.
Missile Launcher
Vernier's left hand is fitted with a missile launcher.

Appearances: Ex-Aid Episodes 20, Gorider Episode 2, Ex-Aid Episode 24, 27

Behind the Scenes


Vernier Bugster is voiced by Kenichiro Matsuda. As Daisuke Egami, he is portrayed by Shotaro Okubo (大久保 祥太郎 Ōkubo Shōtarō). His suit actor is Danki Sakae (榮男樹 Sakae Danki).

Concept Art

Vernier Bugster concept art

Vernier Bugster was designed by Katsuya Terada (寺田 克也 Terada Katsuya).


Collabos Bugster (Jet Combat)

  • As Vernier is born directly from Jet Combat, the Jet Collabos Bugster takes its arms and chest armor from this Bugster.
    • The body part of Vernier's suit is modified from a generic Collabos Bugster's suit without the head parts.


See Also



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 - 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
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