I know I’m asking a lot from this but please something that hasn’t been used yet

@Therasmymaster hello! Using Alpha reality since they are omnipotent the inverse of alpha is “Omega” please try that for you’re Inverse!

Omega

Omega is definitely the best name. They’re polar opposites

It depends on the powers of both of the characters or their history/backstory together and why they are counterparts.

But without context, I'd go with Beta, Gamma or (like everyone else) Omega.