The Omniverse is a single reality. It contains a single fraction of existence, or the existence itself.
About the Omniverse
The Omniverse holds everything that can be accessed through progressive powersets of any particular base universe (or "reality") within itself.
The only trait every single thing within the Omniverse share is that it exists. How it exists varies in countless ways.
Beyond the Omniverse
The Omniverse exists in the surrounding emptiness known as The Outside, a void of virtual nothingness. Whatever may lie outside of these concepts is simply referred to as Beyond, one of the many iterations contained by Transcendentem.
Two Godverses orbit the Omniverse, one belonging to the Creator (God), and one to the Destroyer (Satan).
These verses can also cause paradoxes due to time travel to the past.