Oma Zi-O's Army are a collection of forces who serve the Demon King Oma Zi-O and an antagonist faction in Kamen Rider Zi-O.


After unlocking the powers of the past 19 Heisei Riders, Sougo Tokiwa became Oma Zi-O and began his conquest of the world. Using the Dai Mazines, Oma Zi-O reduced the Earth to ruins and wiped out half of all life. A Resistance soon arose to oppose Oma Zi-O and sent a spy to infiltrate Oma Zi-O's forces. However, the spy, Resistance Captain Woz, secretly defected from the Resistance and supplied them with faulty information in order to lure them to their demise against Oma Zi-O.

After Geiz Myokoin and Tsukuyomi traveled back in time to 2018 to change the past by stopping Sougo from becoming Oma Zi-O, Oma Zi-O's robotic servant Kasshin was sent back in time to eliminate Geiz. However, Sougo deactivated the robot by smashing his Ziku-Driver and altering the timeline so he wouldn't become Oma Zi-O. Kasshin was later reprogrammed by the Time Jackers to go eliminate Sougo, forcing Sougo to become Zi-O again.


           Zi-O Logo.png Villains

Time Jackers
Swartz | Uhr | Ora | Tid | Finis

Another Riders
Another Build | Another Ex-Aid | Another Fourze | Another Faiz | Another Wizard | Another OOO | Another Double | Another Den-O | Another Kuuga | Another Gaim | Another Ghost | Another Shinobi | Another Quiz | Another Ryuga | Another Kikai | Another Zi-O | Another Blade | Another Agito | Another Ryuki | Another Hibiki | Another Kiva | Another Kabuto | Another Den-O II | Another Drive | Another Decade | Another Zero-One | Another 1 | Another Diend

Oma Zi-O's Army
Oma Zi-O | Woz | Kasshin | Dai Mazines

Future Riders
White Woz | Kamen Rider Ginga

Legendary Riders
Masato Kusaka | Kaito Kumon | Tsukasa Kadoya | Hajime Aikawa | Daiki Kaito | Shun Kageyama (Imposter) | Katsumi Daido

Another World Riders
Kamen Rider G4 | Kamen Rider Fuma | Kamen Rider Dark Ghost | Kamen Rider Rey | Kamen Rider Eternal | Kamen Rider Woz | Kamen Rider Yuuki

Kamen Rider Barlckxs | Kagen | Jogen | Woz | Kasshin | Dai Mazines

Tid's Army
Masquerade Dopants | Waste Yummies | Stardust Ninja Dustards | Elementary Inves | Ghouls | Elementary Inves | Low-Class Roidmudes | Gamma Commandos | Guardians | Hard Guardians

Swartz's Army
Monsters: Strong Smash Hazard | Mashin Chaser | Elementary Inves | Orion Zodiarts | Shika Inves | Utopia Dopant | N-Daguva-Zeba | Sagittarius Zodiarts | Gamedeus | Kamen Rider Evol
Footsoldiers: Guardians | Masquerade Dopants | Low-Class Roidmudes | Ghouls | Gamma Commandos | Bugster Virus

Waste Yummies | Gamma Commandos | Humanoise | Salis Worms | Gryllus Worm | Mole Imagin

Rider Time Shinobi
Niji no Hebi
Yaminin | Stardust Ninja Dustards

Rider Time Ryuki
Tatsuya Kano | Takeshi Asakura | Jun Shibaura | Ishihashi | Tozuka | Kamen Rider Odin

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