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"The Entity" is the first and most powerful organism in our planet's history. It has witnessed and regulated every era of life on this planet. When the earth population becomes rather unruly, it intervenes; breaking out of its usual dormant state to initiate a rather brutal regulation process. The Entity transfers all of its energy into a small embryotic form, lying in wait for an unsuspecting creature to devour it.

Upon being consumed, the assimilation process begins and the entity mutates its host into a giant titanic organism; "Gojira" as it has been referred to in modern times. Throughout earth's lifespan, The Gojiras have been responsible for most of earth's extinction events, the greatest of which was caused by one known as "Primordius" from the Permian/Triassic era. The monsters pollute the atmosphere sending down toxic rain and fog that poison at most 90% of life.

The one known failed instance of a Gojira Level Event was set during the late cretaceous period when the subject known as "Penultimus" was struck by an asteroid before it could fully initiate the extinction process

While the process of mutation takes roughly a few centuries to complete, due to scientific medaling, subject "Proximus" underwent scientific experimentation. The result of which caused the animal to mutate into a Gojira within a week while also creating a rather...unorthodox extinction event.