Earth Prime is a planet featured in The Knights of the Multiverse. It gets its nickname from it being the main version of Earth that the series takes place on, and it being the "prime" site for alternate dimensions to tear open portals to and from other worlds.


Retroactively speaking, Earth Prime's early history is the same as our own. However, the timeline diverged in the 1950's that would change the world's fate forever. In 1954, an ancient creature irradiated by atomic bomb testing emerged from the ocean's depths to wreck vengeance on humanity. Its name was Godzilla, and it left Tokyo in ruins. Buildings were leveled, thousands of military personnel and citizens were killed, and worse of all, radiation left behind by all of Godzilla's footsteps left the entire area contaminated; everything from plants to the people. The monster was thankfully destroyed using an experimental weapon called the Oxygen Destroyer, but many scientists believed (and rightfully so, in the end) that Godzilla was most likely not the last of his species. In fact, there might still be an insurmountable amount of creatures just like him lingering all around the world, and if nuclear testing was to continue, another Godzilla would most certainly appear.

The aftermath of Godzilla's rampage was documented and broadcasted all over the world, pushing the world leaders to try and develop new, cleaner sources of energy than nuclear weapons, as well as to buckle down all world defense systems to prevent another disaster like Tokyo and develop new weapons that could counter another Godzilla and other creatures like it. As for Tokyo itself, while it took many years, the radiation levels did manage level down and, thanks to the advancements made in the proceeding years, was cleaned up and contained. Tokyo was completely rebuilt, where overtime it grew into the technological capital of not just Japan, but the world.

Notable Locations


The technological capital of the world.

New Photon/Saotome Labs

Monster Island

An island close to Japan where most of the world's most dangerous monsters are kept. Though there are defenses to make sure none of the monsters escape, once in a while, one or two monsters will manage to escape and attack most cities.

Saotome Labs

Featured Series

This version of Earth exists in a parallel version of the 21st century, where advancements in mechanical engineering and robotics have existed for well over two decades now, most being achieved around the turn of the century. Photon power and Getter energy power generators power most cities all over the world, though most residents go through life the same as the real world. Genetic engineering, though (cloning and artificial humans), is still in its infancy but advancements in the field have been progressing steadily (hence subjects like Ruri).

Taking inspiration from the Super Robot Wars game franchise, this version of Earth also exists as a hybrid of Earths from most of the shows featured in the series:

Series Featured Include:

  • Original Mazinger Z & Great Mazinger anime
  • Original Getter Robo anime
  • Tosho Daimos
  • Kotetsu Jeeg
  • Zambot 3
  • Daitarn 3
  • Brave Raideen
  • Sailor Moon (Silver Millennium backstory, acts as alternate reality to Crystal Tokyo universe)
  • My Life as a Teenage Robot
  • Phineas and Ferb
  • Elements from Astro Boy 1963 series, 1980 series, 2003 series & Jetter Mars.
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