Omniverse

Not to be confused with the title of the wiki, Omniverse is the term used to describe all of existence across all realities including real life itself. Within the omniverse are many multiverses which in turn contain many universes which may contain pocket dimensions within them. One of those universes is Omni 01 where many of the wiki's stories are focused.

Properties
There are an infinite number of universes contained within the Omniverse. There is one universe for every single possibility and difference. Such differences can vary as little as an action being performed to the laws of physics being entirely different. For example, there is a universe where a cat is trapped inside a steel box. Multiple universes appear from this one scenario: one where the box is opened and the cat escapes, another where the cat dies, another where the cat breaks out of the box with superhuman strength, another where the box melts around the cat, and the list goes on.

However, there is a limitation as to what universes can exist or else paradoxes may arise. For example, the Omniverse cannot be destroyed in any way whatsoever, because if it were, it would include the real world as well. A more specific example is the race known as Titans who project themselves in different forms across multiple universes. Titans can never be destroyed completely or else there would be a paradox in another universe where the Titan was never destroyed.

Galaxy Universe
A universe exists parallel to others in another reality. Normal universes extend infinitely in all directions as a void of dark energy and matter. Universes are usually filled with billions of galaxies which contain billions of stars, many of which have planets in orbit. This universe is seen the most frequently because it is the same type of universe Real Life is.

Plane
A plane is far simpler than a Galaxy Universe. Much like Galaxy Universes, planes extend infinitely in all directions, but there are no planets or stars, merely an infinitely extending piece of terrain, hence the term plane. Though technically an inaccurate term, planes are sometimes referred to as dimensions.

Multiverse
A multiverse is a collection of universes enclosed inside one another either concentrically, in clusters or sometimes a mix of both. The mortal mind cannot fathom the physical appearance of a multiverse just as they cannot fathom infinity. Multiverses are groups of very closely related universes.

Finite Universe
A universe with an edge to it. Depending on the universe, the boundaries are made of different materials. Finite universes can be either planes or galaxy universes.