Alternate universes

Alternate realities have been a staple of fiction for years. They most often appear in science fiction and the superhero genre has been intertwined with them for some time.

Nature
An alternate reality is generally thought of as a divergance. Any time one thing happens, there is a split where every possible outcome is made. As such, there would be a seemingly infinite number of alternate universes, with every possibility, conceivable or not.

Structure
Just as all matter in the universe starts at the quark, expanding out through subatomic particles, atoms, cells, etc. and into planets and, ultimately, the universe, so the expansion continues. A collection of universes in general proximity, or tied to each other seemingly intrinsically, is called a multiverse. Similar correlation between multiverses is a megaverse. The omniverse, meanwhile, is what encompasses all realities, all megaverses, ever. It is within the name, as omni means all.

Nomenclature
The big two comic companies are fond of naming their universes "Earth-whatever number". Karabear takes this concept and alters it just slightly to fit in with proper classification. For Karabear, a prefix is added to a universe's "proper" name, to delineate it. Now, all DC universes begin with DC, as well as requisite indicators of its place as Pre-Crisis (PrC), Post-Crisis (PrC) or otherwise delineated. Marvel gets a similar treatment with an MC prefix, but less need for additional clarification. As such, KC is the prefix for Karabear Comics.

Karabear alternate universes
Here is where one should go to find out what alternate universes have been confirmed for Karabear, and their properties.