Daisuke Serizawa's research into micro-oxygen ultimately resulted in the production of a single Oxygen Destroyer.

Micro-Oxygen (ミクロオキシゲン,   Mikuro Okishigen?) is a powerful fictional chemical compound which is presumably created from the atmospheric elemental gas oxygen. It is a major ingredient of the deadly Oxygen Destroyer.


Showa era


Daisuke Serizawa unintentionally developed a device called the Oxygen Destroyer while studying and experimenting with oxygen. Serizawa presumably discovered and experimented with micro-oxygen during this process, however the substance is never mentioned by name or alluded to in the film.

Heisei era

Godzilla vs. Destoroyah

42 years after the events of 1954, physicist Kensaku Ijuin rediscovered the chemical compound used in the Oxygen Destroyer through his own experiments, dubbing it Micro-Oxygen and intending to use it to benefit humanity. Ijuin said that micro-oxygen could allow deep-sea divers to use lighter tanks that contain more oxygen, and an experiment showed that any fish raised in water containing micro-oxygen would grow much larger than normal fish, potentially alleviating the world's hunger problem.

Ijuin admitted that micro-oxygen atoms were capable of penetrating any material and unleashing large amounts of energy, and would make a very effective weapon despite not being intended for the purpose. Yukari Yamane, heeding a warning from her aunt Emiko, asked Ijuin if he was aware that micro-oxygen was very similar to Daisuke Seizawa's Oxygen Destroyer. Ijuin stated that he consulted some of Serizawa's surviving work during his experiments, but never intended to recreate the Oxygen Destroyer, because his studies performed on the underwater soil where the Oxygen Destroyer was fired revealed that it could have reduced Tokyo to a graveyard if used on land.

Kenichi Yamane approached Ijuin and asked him to use micro-oxygen to re-invent the Oxygen Destroyer, believing it was the only way to destroy Godzilla before he could destroy the world. However, Ijuin had already discovered that the Oxygen Destroyer mutated several prehistoric crustaceans in Tokyo Bay in 1954, and that these creatures had evolved abnormally to manipulate micro-oxygen within their own bodies. Hoping to stop the creatures, Ijuin ran more experiments with micro-oxygen and discovered that it liquefied at low temperatures and was rendered ineffective.

Ijuin urged the military to use freezer weapons against the creatures, as it should neutralize the micro-oxygen in their bodies and kill them. However, the creatures combined together into a single giant monster, and the chemical composition of their bodies changed once more. Ijuin noted that the creatures had become the living Oxygen Destroyer, dubbing it "Destoroyah."


  • Though the exact chemical composition or processes of micro-oxygen are never discussed, it is implied that micro-oxygen atoms are simply miniaturized oxygen atoms that contain more chemical energy than normal oxygen atoms. When weaponized as the Oxygen Destroyer, micro oxygen can cause violent and corrosive chemical reactions that penetrate or disintegrate virtually any material.

List of appearances


Showa era

Heisei era

Weapons and vehicles
Showa era Oxygen Destroyer MO2Markalite GYROMarkalite CannonFFE Space FighterAtomic Heat Ray GunArtificial Lightning GeneratorGotengoA-Cycle Light Ray GunMaser CannonMoonlight SY-3Giant ElectrodeGohten
Heisei era Hyper Laser CannonSuper XSoviet Nuclear Attack SatelliteSuper X2Anti-Nuclear Energy BacteriaM6000 T.C. SystemMBT-92MBAW-93ASTOL-MB93GarudaLand MogueraStar FalconDAG-MB96Super X3Nilai-Kanai Guardian Tower
Millennium series GX-813 GriffonDimension TideTaihoD-03 MissileAC-3 White HeronEclairKaryuRumblingDogfighter
Toho reboot series Massive Ordnance PenetratorGodzilla blood coagulantElectromagnetic Induction Rifle
Miscellaneous Potaedong 55Mind-Destruction CoilPolonium 210Dublin VX VIIIAAC-BetaVulture
Land vehicles
Showa era M24 Chaffee Tank155mm Howitzer M124 Twin Rocket CarHonest John Missile LauncherM4A3E8 Sherman TankType 61 TankHalf Track V2 RocketsTyphoon DevastatorsExploration CarThunder Number
Heisei era Type 90 Tank
Millennium series Full Metal Missile LauncherType 96 APCType 88 SSM
TriStar Pictures HMMWVM270 MRLSM1 Abrams
Toho reboot series Type 10Type 96 Multi-Purpose Missile SystemType 99 155mm Self-propelled HowitzerAratrumLanding shipExosuit
Airborne vehicles
Showa era F86F SabreLockheed T-33A Shooting StarSaunders-Roe A.36 LerwickSikorsky H-19 ChickasawKawasaki-Vertol KV-107 IICessna 170Curtiss C-46DFokker F27 FriendshipP-1Red Bamboo Fighter JetC19 Personal Carrier
Heisei era Bell 212Kawasaki P-3C OrionMitsubishi F-1Mitsubishi F-15JF-16 Fighting FalconAH-64 ApacheBoeing 747Hughes 500CAH-1 Cobra
Millennium series
TriStar Pictures F-18 HornetUH-1H IroquoisCanberraPiasecki H-21BOH-6D Cayuse
MonsterVerse AgustaWestland AW109Airbus A340Boeing CH-47 Chinook
Toho reboot series Mitsubishi F-2Northrop Grumman B-2 Spirit
Waterborne vehicles
Showa era Eikou MaruBingo MaruLanding CraftSeahawkOrion MaruFrontier Missile CruiserI-403Mu SubmarineRed SatanRed Bamboo ShipAlphaBlack SharkAkatsuki
Heisei era BalashevoDD-122 Hatsuyuki
Millennium series Mini-SGSSatsumaHatsuyuki
TriStar Pictures Ohio Class Nuclear-Powered SubLos Angeles-Class Nuclear Attack SubH.E.A.T. Seeker
MonsterVerse USS Saratoga
Extraterrestrial vehicles
Showa era Mysterian Space StationMysterian DomeMysterian UFONatarl UFONatarl Mother ShipXilien UFOKilaak UFOTerran UFOVirasian UFOVirasian Mind Control DeviceSpaceship Zanon
Millennium series Millennian UFOXilien UFOs α, ß and γXilien MothershipXilien Fighter
Video games Hammer Sub
Showa era CadmiumSpace Station JSS-3Weather Control CapsuleRadioactivity SondeAAB GammaHuman-SignGreen Call