Omegaverse is the direct result of a multiversal collapse. Created from the remains of A-verse , B-verse , and Mirrorverse , plus fragments of other universes, it's still in many ways in flux. This leads to a lot of fun. It doesn't help that Mirroverse is literally across the desert now.
Look it's basically the canon protoverse plus a bunch of OCs I'm not really sure what to say here