Originally posted by grey fox
A multiverse is multiple universes all within a single 'company' . Ie in DC they have 52 different earths which in turn can be considered as 'Multiverse'. An omniverse encompasses all. So a comic Omniverse would contain Marvel , DC , Image , Wild Horse, Manga and possibly our own universe.
😬 Marvel has a dickish tendencey to redefine words for their own purposes.
For them a Multivese is the set of all universes that share roughly the same characteristics (ie heroes in all the same positions but with different identites, or all changes stem from the death of one hero/villian). This includes WhatIfs and alternate futures/pasts.
They call a megaverse the set of all multiverses with similar characteristics. I have no idea what they really mean by that.
The omniverse is the set of all universes that are either a) possible or b) owned/created by Marvel.
Thats not what the words mean of course it's just what Marvel means when they use them.