How All This Madness Began.

Describing how all the universes began is...less complicated than you would think, to say the least.

There were several instances of this happening throughout various media, such as the Serpent Riders, the Doom demons, the Nazis (from Hellboy) and the Combine all opening portals from other universes, but they were not powerful enough to connect all of the universes together.

However, in the near future, something happened. Somehow, a Dimensional Crystal from an unknown universe traveled to our universe. It just so happened to crash through a power grid. The resulting electricity flowing through the crystal made it so unstable that it exploded, scattering it's fragments everywhere. This lead to portals from all kinds of universes opening. It did not go unnoticed, however, and using a crystal fragment, some scientists were able to close the portals before anything nasty made it's way through to our universe. (Although, a Pit Demon attempted to claw it's way through one of the portals, but the scientists were able to close it at the right time, thus cutting the demon in half.)

The scientists then began experimenting with the crystal fragments they had collected, and eventually made a device that could open and close portals according to the user's whims. During testing of the device, the scientists accidentally opened a portal to a universe that consisted only of tornadoes. The device was sucked into the portal, but not before it collided with a table, causing it to malfunction. As it went into the tornado, it opened portals to other universes at random, and logged everything that was in them. Eventually, the device landed somewhere unknown in our universe, and the crystal in the device shattered.

Who knows what might happen now?