This article is about a/an video game in Kamen Rider Ex-Aid.
File:MBXX Start Screen.png

"Mighty Brothers Double X! (fast paced techno music)"
―Activation announcement[src]

"Double Gashat!"
―Insertion announcement[src]

"Gachan! Level Up! Mighty Brothers! Futari de Hitori! Mighty Brothers! Futari de Victory, X!"
Level X Transformation announcement[src]

"Gachan! Double Up! Ore ga Omae de! Omae ga Ore de! (We are!) Mighty, Mighty Brothers! (Hey!) Double X!"
―Level XX Transformation announcement[src]

"Gachon! Kimewaza! Gachan! Mighty Double Critical Strike! Kaishin no Ippatsu!"
―Gamer Driver Finisher announcement[src]

"Double Gashat! Kimewaza! Mighty Brothers Critical Finish!"
―Weapon Finisher announcement[src]

Mighty Brothers XX (マイティブラザーズXX Maiti Burazāsu Daburu Ekusu) is a co-op 3D action-platformer video game. Unlike the other Gashats made by Genm Corp, this game and its conceptualization and ideas were created by Emu Hojo. It also served as the basis for the Mighty Brothers XX Gashat.

It is seemingly a part of the same series of games as Mighty Action X, although Kuroto Dan does not acknowledge it, labeling it as a "bootleg".

Game DescriptionEdit

to be added


File:Mighty Brothers XX Sketch.png

A special co-op version of Mighty Action X. Emu first receives the Mighty Brothers XX Gashat in Kamen Rider Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider. He later receives another one from Parad.

Emu was the original creator of the game concepts outside the gaming company during his childhood life. The drawing of the game that Emu made was later sent to Dan in a fan letter. Christmas Special: Targeting the Silver X mas! Engineered History!

Facing a crisis as both a Doctor and a Kamen Rider, Emu is approached by Parad, who gives him a black gashat. Out of curiosity, Parad gave it to Emu, wondering if he could change his fate when he has had his gashats confiscated by Hiiro. When he came to use it, the virus bombarded Emu's system. However the Bugster inside of him turned the Gashat into Mighty Brothers XX, much to everyone's shock. When activated, the base form is similar to Level 1 with the body being in two colors on 2 sides, orange and blue. When Emu leveled up, everyone present watched in shock as the single Emu emerged from the transformation as 2 Ex-Aids! Defined Destiny

After transforming, the 2 Ex-Aids begin arguing over who is who: the Orange one claiming to be M, while the Blue claims to be Emu. This infighting results in the Bugster and Genm escaping. After powering down and re-merging into a single being, Emu is stricken by a piercing headache and faints.

While Hiiro performs a complex operation to remove the cancer from their patient, Emu distracts the Alhambra Bugster, only to be attacked by Gemn, who intends to destroy the 'bootleg' game. Emu has finally realized the power of the Mighty Brothers; his two personalities have split. The Orange side, known as Level XX R is the hot-tempered gamer in him, while the Blue, Level XX L, is the cool, patient concerned doctor. In order to use this Gashat, both sides accept who they are and use Super-CoOp-Gameplay to defeat the Bugster. We're Kamen Riders!

Facing the Level 5 Revol Bugster that had emerged from Nico Saiba, Ex-Aid found that the hits he inflicted in the Double Action Gamer Level X strangely had no effect on his Bugster opponent, with Asuna Karino later reasoning that being the source of Nico's stress was the cause. Ex-Aid was then confronted by Dan, who vowed to eliminate Emu's "bootleg" game. Splitting up into the Level XX R and L, Ex-Aid proved a match for Genm Zombie Gamer, forcing him to retreat with the Bugster. Though failing to terminate Emu's "bootleg", Dan was able to determine through the resulting fight data that Mighty Brothers XX did indeed equal the power of Level X, with the twin Double Action Gamers adding that up to "Level XX". A New Challenger Appears!

The Paradox Who Defeated M

The Truth Exposed

Regaining his confidence following the revelation of his Game Disease, Emu assumed Ex-Aid Double Action Gamer Level XX against Genm Zombie Gamer Level X and the Vernier Bugster. After the Bugster was defeated by Snipe Simulation Gamer Level 50, the Double Action Gamers beat back Genm with a Critical Finish utilizing two Gashacon Key Slashers. Take Off Against the Direction of the Wind!

Chasing the Mystery!

The Gashat was not present when Emu's Gamer Driver was destroyed by Genm's Critical Dead, so it is presently unknown if Emu can still use the power of this game. Engineered History!

To The Max, Dead or Alive!

Go Together, Embracing Your Ambitions!

Other EventsEdit

Chou Super Hero TaisenEdit

Kamen Rider × Super Sentai: Chou Super Hero Taisen

Double Action GamerEdit

  • Kamen Rider Ex-Aid
    • Level X (Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider, Ex-Aid Episode 13-16, 18, 20-24, Chou Super Hero Taisen)
    • Level XX (Heisei Generations: Dr. Pac-Man vs. Ex-Aid & Ghost with Legend Rider, Ex-Aid Episode 13-16, 18, 20-24, Chou Super Hero Taisen)

Mighty Brothers XX GashatEdit

File:KREA-Mighty Brothers XX Gashat.png

When activated, the Gashat reformats the battlefield into a Game Area.

Its original blank form was meant to be Parad's personal Gashat, made by Kuroto using the collected Bugster Viruses. Kuroto needed Parad to collect data by inserting the Gashat into a Bugster in order to complete it, but out of curiosity, Parad decided to give Emu the Gashat instead.

When used in a Gamer Driver, the incompleted Gashat injected Emu with massive amounts of the Bugster Virus. The Gashat could have killed Emu very easily, if not for his natural immunity to the virus. In a bright flash and the data from Emu's body merging with the blank Gashat, it changed into the Mighty Brothers XX Gashat as a result.


  • Mighty Brothers XX is based on 3D Platformer adventure games such as Super Mario Brothers and Sonic the Hedgehog.
    • It also alludes to multiplayer games given the ability it grants a Rider, the ability to split into a "two player mode".
    • Mighty Brothers XX could be a homage to the gameplay and two in one playable characters on Sega Genesis version of Sonic the Hedgehog 2, judging by the color representations (orange and blue) and Level XX form(s).
  • Being a fan-created game, Mighty Brothers XX is likely a reference to dōjinshi-related media made by Japanese hobbyists for fun. Most of them are based on pre-existing material, but some are entirely original creations. Notable examples are Team Shanghai Alice's Touhou Project, 07th Expansion's Higurashi When They Cry and Type-Moon's Fate/ series.
  • The "Futari de Hitori" part of the Level X announcement for this Gashat is a reference to Kamen Rider Double, the line meaning "Two in One" and being a common phrase associated with Double, such as being used as part of the announcement for Kamen Rider Specter's W Damashii.
    • The way this Gashat functions is also similar yet different from Double's Xtreme Memory; similar in that both are collectible devices used to access powerful forms, which uniquely take up both of the two slots in their respective drivers; and different in that while the Xtreme Memory combines both of Double's bodies into a singular Rider form as CycloneJokerXtreme, the Mighty Brothers XX Gashat instead splits Ex-Aid into two different bodies with two distinct personalities in the Level XX form, much like Decade's Final Form Ride on Double.
      • Its finisher is activated by closing and opening the Gamer Driver, just like how the Xtreme Memory's finisher is activated by closing and opening the Memory itself when in the Double Driver, though it is closer to the beetle Zecters' Rider Kick activation by concept.
  • The name of the form assumed using this game, Double Action, may also be a reference to Kamen Rider Den-O's insert song, Double-Action.
  • The charging sound bears a slight resemblance to the charging sound of the Mega Buster from the Classic Megaman series.
  • Emu drawing the characters could be a nod to either recolors or OCs (Original Characters).
  • The opening notes of the Gashat's activation and Level XX tune bears similarities with the instrumental of the Template:PR theme song.
File:Brain R and L.jpg
  • The twin Ex-Aids may represent a medical theme: the two hemispheres of the human brain.
    • Ex-Aid XX L's calm personality and prioritizes "the patient's safety" first is to represents on the left brain's logical functions
    • Ex-Aid XX R's prioritizes "to defeat the enemy to ensure victory" is to represents on the right brain's intuition functions.
  • The "Ore ga Omae de!" and "Omae ga Ore de!" (I am you, you are me) part of the Level XX announcement refer to the psychological theme of the RPG game series Persona.
  • Kuroto Dan's attempt to annihilate the Gashat at the same time considering Mighty Brothers XX as a bootleg game is a reference to video game companies ordering a Cease and Desist to fanmade video games due to Copyright Infringement, as the owners of the pre-existing material can sue the the creators who used their material because the owners cannot allow it. Therefore, the creators technically "stole" the material and can be accused of invaiding privacy. For example, Nintendo ordered a C&D on the fanmade Another Metroid 2 Remake, a remake of Metroid II: Return of Samus.
File:Black MBXX Code.png
  • Although it is said that the blank version of the Gashat contains a lot of Bugster Virus, game codes of the blank version are briefly seen, which implies the Gashat may be planned to be based on other games.



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