Multiverse's Post-Crisis

Ah, the multiverse... It's truly a unique and remarkable thing created by gods. Until those said gods thought it was time to wipe the slate clean. The presence, The One Above All, and I Fanir. Together the three of us destroyed quite a few universes , before prepackaging them all into one single universe. Naturally as a result everything in this new universe was completely different from its original parts. Especially on the planet Earth where multiple major figures,histories, religions, beliefs, power systems, and much more were all developed and created in one shared universe.