Omniverse

The Omniverse is the final Archverse, as well as the container for everything that exists (existence state 1). The Omniverse itself does not exist, as to avoid the issue of self-containment.

Formation
The Omniverse's exact origin is extremely unclear, with little to no evidence supporting that it even had an origin. The general consensus in the Omniverse is that it has always been here.

Structure
The Omniverse has the biggest Archverse before it placed at the Omniverse's center, with other disconnected/special verses floating around in the middle/outer sections of the Omniverse.