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This article is about a/an multiverse in the Kamen Rider Series.
The universes in HGF

Multiverse as seen in Kamen Rider Heisei Generations Forever

Within the franchise, Kamen Riders exist amongst various worlds within several iterations of realities known as A.R. Worlds (Another Rider's / Alternate Reality World).

Concept

The concept of the Multiverse refers to the existence of countless parallel universes that comprise of all that exists. According to Tsukasa Kadoya, the overseer of these worlds, he claims that every single Rider exists on their own separate plane, with Zi-O being the sole being capable of uniting (and unmerging) all of them.

The worlds are usually are inline in both date and time Kamen Rider Decade, though there will be differences here and there in terms of the time flow. Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders.

Standard Worlds

Worlds Timelines Timeline changes
World of Showa Riders Showa series Showa Rider erased
Showa manga series & EVE None
Showa series & Boy in the Dark None
Showa series & Original ZX None
Showa series & Spirits None
Kamen Rider 1971-1973 None
World of Koji Kazaya Storyboard Manga Kamen Rider None
World of Kuuga Kamen Rider Kuuga Kamen Rider erased
Kamen Rider Kuuga (manga) None
World of Agito Kamen Rider Agito Kamen Rider erased
Kamen Rider: Seigi no Keifu None
Kamen Rider Agito (novel) None
World of Ryuki Kamen Rider Ryuki TV Time Vent reset
Finale reset
Kamen Rider erased
Kamen Rider Ryuki: Episode Final None
Kamen Rider Ryuki Special: 13 Riders ending 1 None
Kamen Rider Ryuki Special: 13 Riders ending 2 None
Kamen Rider Ryuki: 13 Riders The Comic ending 1 None
Kamen Rider Ryuki: 13 Riders The Comic ending 2 None
Advent Calendar None
World of If None
Kamen Rider Ryuki (novel) None
World of Faiz Kamen Rider 555 TV history erased
Kamen Rider erased
Kamen Rider 555: Paradise Lost None
Kamen Rider Battle Stage: Faiz vs Delta None
Kamen Rider 555 Stage: Kyuukyoku Battle Kamen Rider Chou Kessen None
Kamen Rider Super Live: Cho Henshin Battle None
Kamen Rider Faiz Seiden: Deformed Flowers None
World of Blade Kamen Rider Blade Kamen Rider erased
Kamen Rider Blade: Missing Ace None
World of Hibiki Kamen Rider Hibiki Kamen Rider erased
Kamen Rider Hibiki: Asumu, Transform! You can be an Oni, too!! None
World of Kabuto Kamen Rider Kabuto Previous timeline
First Hyper Clock Up
Kamen Rider erased
World of Den-O Ryotaro's timeline Kamen Rider erased
Hana's timeline None
Kai's timeline None
World of Kiva Kamen Rider Kiva Kamen Rider erased
King of Vampire None
Kamen Rider Kiva (novel) None
World of Natsumi Kamen Rider Decade None
Kamen Rider Decade: The World of Tsukasa Kadoya ~The Garden Inside the Lens~ None
World of G Kamen Rider G None
World of Kuuga (Decade) Kamen Rider Decade None
World of Kiva (Decade) Kamen Rider Decade None
World of Ryuki (Decade) Kamen Rider Decade Time Vent reset
World of Blade (Decade) Kamen Rider Decade None
World of Faiz (Decade) Kamen Rider Decade None
World of Agito (Decade) Kamen Rider Decade None
World of Kabuto (Decade) Kamen Rider Decade None
World of Hibiki (Decade) Kamen Rider Decade None
World of Negatives Kamen Rider Decade None
World of Diend Kamen Rider Decade None
Kamen Rider Decade: The World of Tsukasa Kadoya ~The Garden Inside the Lens~ None
World of Shinkenger Kamen Rider Decade None
World of X-Rider Kamen Rider Decade None
World of Net Kamen Rider Decade: All Riders Super Spin-off None
World of Black RX Kamen Rider Decade None
World of Black Kamen Rider Decade None
World of Decade Kamen Rider Decade None
Kamen Rider Decade: The World of Tsukasa Kadoya ~The Garden Inside the Lens~ None
World of Amazon Kamen Rider Decade None
World of Televi-Kun Kamen Rider Decade: Protect! The World of Televikun None
World of Double Kamen Rider W None
World of Final Stage Kamen Rider Decade: Final Stage Kiva-la reset
Kiva-la re-reset
World of Skull Kamen Rider × Kamen Rider W & Decade: Movie War 2010 None
World of Stronger World of Stronger None
World of OOO Kamen Rider OOO Shocker's reign
TV history erased
Kamen Rider erased
World of Fourze Kamen Rider Fourze TV history erased
Kamen Rider erased
World of Gatakiriba Kamen Rider OOO: Final Stage None
World of Latorartar Kamen Rider OOO: Final Stage None
World of Sagohzo Kamen Rider OOO: Final Stage None
World of Shauta Kamen Rider OOO: Final Stage None
World of Tajadol Kamen Rider OOO: Final Stage None
World of Putotyra Kamen Rider OOO: Final Stage None
World of Burakawani Kamen Rider OOO: Final Stage None
World of Wizard Kamen Rider Wizard Sorcerer's recreation
TV history erased
Kamen Rider erased
World of Narutaki Kamen Rider Decade: The World of Tsukasa Kadoya ~The Garden Inside the Lens~ None
World within the Magic Stone Kamen Rider Wizard None
World of Gaim Kamen Rider Gaim Lapis's recreation
TV history erased
Kamen Rider erased
Mai's vision None
Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai ending 2 None
Real Riders: Kaito Kumon Gaiden None
World within the Magic Stone (Final Stage) Kamen Rider Wizard: Final Stage None
World of the Warring Period Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle None
World of Drive Kamen Rider Drive Shocker's reign
Kamen Rider 4 1st loop
Kamen Rider 4 2nd loop
Kamen Rider 4 3rd loop
Kamen Rider 4 4th loop
Kamen Rider 4 5th loop
Kamen Rider 4 6th loop
Kamen Rider 4 7th loop
Kamen Rider erased
Kamen Rider Drive: Surprise Future None
Crystal World Kamen Rider Summonride None
World of Ghost Kamen Rider Ghost TV history erased
Kamen Rider erased
Kamen Rider × Kamen Rider Ghost & Drive: Super Movie War Genesis History erased
World of OOO (Decade) World of OOO None
World of Gaim (Decade) World of OOO None
World of Amazons Kamen Rider Amazons None
World of Ex-Aid Kamen Rider Ex-Aid TV history erased
Kamen Rider erased
World of Kyuranger Kamen Rider Ex-Aid None
World of Build Kamen Rider Build TV history erased
Kamen Rider erased
World B Kamen Rider Build None
World of Zi-O TV timeline Ataru's timeline
Hiryu's reign
Finale reset
Ohma Zi-O's timeline None
GeizRevive's timeline None
Ohma Shocker's timeline None
Another World that revived G4 None
Another World that revived Rey None
Another World that revived Dark Ghost None
Another World that revived Fuma None
Another World that revived Dark Drive None
Another World that revived Woz
Another World of Geiz Myokoin
None
Another World that revived Yuuki
Another World of Yukihiro Osumi
None
Another World that revived Eternal
Another World of Takashi Owada
None
Another World of Kazuma Nishimura None
Another World of unknown victim 1 None
Another World of unknown victim 2 None
Another World of unknown victim 3 None
World of Swartz Kamen Rider Zi-O Destroyed, later restored with timeline reset
World of Zero-One Kamen Rider Zero-One Rider and TV history altered

Merged Worlds

  • World of the Rider War
  • World of 5 Colors
    • The merge of World of OOO (Decade) and World of Gaim (Decade). World of OOO
  • New World
    • The merge of World of Build (World A) and a world without Evolto (World B). Kamen Rider Build
  • World of Kamen Rider
    • The merger of all 20 Heisei Riders' main worlds (Kuuga through Zi-O). Kamen Rider Zi-O
    • It is unknown what should be the corresponding world for Decade as he still claiming himself not belonging to this world after the merger, although one possibility might be the World of Decade.

Similar cases

There are some "worlds" that aren't really "alternate", but do share some continuity with the real world. Examples include:

Notes

  • The multiverse theory is a famous concept explored in both real science and sci-fi stories, which explains that as an individual makes a decision, there exists another (parallel) universe in which they did not make that decision. While the concepts have been debated several times, several scientists are divided as to whenever the parallel universe theory exists, thus has removed its legitimacy as an actual scientific inquiry.

References

All items (41)

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