13 billion years ago-

An evil 3 headed dragon called King Ghidorah is born from the creation of the universe, and eventually begins destroying planets for fun out of boredom.

5 billion years ago-

The Godzilla planet is attacked by Alien invaders called Chaos, who send probes to assimilate genetic information from the Godzillas and create a super monster. The planet's inhabitants are only able to defeat them after a long and bloody war. From there they make a vow to never battle another being again, and begin spreading their ways of pacifism across the universe.

2 billion years ago-

Giant monsters begin to emerge in the center of the planet earth, including a species of giant ankylosaur that would one day be known as ANGUIRUS.

65,000,000 years ago-

A meteor impacts the earth, wiping out most life on the surface. The hollow earth kaiju ROKMUTUL is locked in hibernation inside a volcano while batting a pterosaur thanks to an eruption.

5,000 years ago-

King Ghidorah attacks the Godzilla planet, destroying many Godzillas. Some stay and contact Allied civilizations to help them, while others flee to the planet earth, making homes in the hollow earth, only to become prey to its creatures.

5,000-4,000 years ago-

The hollow earth creatures hunt the Godzillas, who thanks to their pacifism could only hide away, some fleeing to the ocean surface. Thanks to their incredible regenerative properties, the Godzilla that were caught suffer a slow, painful fate of being constantly eaten. Eventually, one Godzilla grows tired of the cycle, and battles and kills an Anguirus. Gradually, all the Godzillas in the hollow earth end up forming a warrior culture.

3,500 years ago-

A giant hollow earth ape rises to the surface on the remote Letchi island, and the locals begin to worship him as a god called KING KONG. At the same time, the spirit of earth creates several giant moths called MOTHRA to act as its guardians, as well as several tiny fairies to be their priestesses, all with the ability to merge with their respective Mothra. Both the Mothras and the priestesses were all female.

3,000 years ago-

Chaos sends probes to earth, but the people of Atlantis fight back, first creating a giant turtle called GAMERA. However, Gamera ends up going rogue, forcing the Atlantians to use the DNA of one of the Godzillas living in the ocean to create their own, more large and powerful Godzilla. The Atlantean Godzilla defeats Gamera and destroys the probes, but the battle causes Atlantis to sink into the ocean.

2,000 years ago-

Chaos returns and this time attacks earth using the monsters BAGAN, VARAN, and BARAGON. The Mothras rush to fight them, but Bagan's strength is able to allow him to destroy most of them. Thankfully, the spirits of deceased warriors enter a statue, causing it to become the mighty MAJIN TUOL. Majin Tuol and the last Mothra manage to seal Bagan away, stripping him of most of his power, and kill Baragon. However, Varan survives and hides in a cave, with legends spreading that he would return to destroy mankind in 1999.

1,000 AD-

A hollow earth Godzilla befriends an Anguirus, forming an extremely unexpected friendship.

1070 AD-

The space monster ERABUS arrives on earth and goes into hibernation on the Habu islands. Her blood causes pit vipers living on the island to be able to expand their lifespans, and is mistaken for red sap by the inhabitants.

1514-

Villagers on the remote Odo island spot a godzilla, and attempt to connect with him via a psychic medium. They succeed, and the Godzilla tells them the name of it's kind, with the humans misinterpreting this as his name. And so, the legend of the sea monster Godzilla begins.

1750-

Genevan college student Victor Frankenstein creates a man out of assorted body parts, but is horrified by it and casts it out to the woods. The creature is shunned by all those around him, and lashes out, killing everyone Victor loved. Victor chases the creature through the arctic, but nearly freezes to death until he is saved by a man named Captain Walton. Victor tells him the full story, dying afterwards, and upon seeing this the monster vows to disintegrate himself at the North Pole. He then disappears into the snow.

1880-

The flying monster MIBA exits the hollow earth and hibernates within the Mauna Loa volcano. The same year, the hollow earth Godzilla that befriended Anguirus becomes trapped in suspended animation inside a volcano while battling an Anguirus, a giant hollow earth Arkheoptariks, and a giant hollow earth chameleon.

1935-

Gotham city billionaires Thomas and Martha Wayne are killed in an alley by a mugger, with only their son Bruce surviving.

1944-

Doctor Franz Riezendorf of Germany discovers the heart of Frankenstein's monster, and sees that it was still beating. Amazed by this, he brings it to Germany for study.

August 6th, 1945-

The Nazis confiscate the heart of Frankenstein's monster, and bring it to japan in hopes to use it to create an army of immortal soldiers. However, the heart was transported to Hiroshima, which is destroyed by the atomic bomb.