Multiverse Time War

The Multiverse Time War is a never-ending ongoing conflict waged by several interdimensional factions in different parallel universes, alternate realities and timelines, each with the goal of manipulating events for their own benefit, in direct violation of physical laws and common sense.

The origin, locations and backstories of the war are highly complex, difficult to pin down and ever-changing, with new forays and alterations brought about by the various factions which are almost impossible to trace. The illustrious Doctor Giacomo Pazzo argued that the war had no beginning and no end. It is not known what the precise motives of each of the different factions are.

It is possible that the war is now over, but it must be understood that the word "now" is clearly meaningless when applied to a conflict waged across universes, space and time. Certain damages caused by the various incursions can leave unalterable paradoxes open in the course of the history of each universe.

Earth 2 seems to have been one of the main fronts of this conflict, as it has been repeatedly targeted by invaders from other universes and realities, both real and imaginary.