Multiverse

The Multiverse is the collective term for all parallel dimensions and realities in existence.

Known Extra-Dimensional Planes

 * Earthly Plane: The dimension where planet Earth is located, alongside a vast number of other planets and galaxies.
 * Mirror Dimension: An exact parallel dimension as to the Material Universe, but as a mirrored inverse. It can be accessed by using mirrors on Earth.

Inter-Dimensional Travel
Travelling between universes through the Multiverse is incredibly difficult and usually requires a lot of energy. Yet several shortcuts do exist.

Marcus Styles, a miracle criminal better known as Nihilus, possess the ability to access the Mirror Dimension, thus travelling from mirror to mirror.