Originally posted by backup
But the Fifth Dimension exists outside the multiverse:http://imgur.com/a/ZeNar
And Mxy and 5D beings are beasts.
They were only referring to physical multiverse which is not the same the entire Multiverse or universe structure which consists of infinite dimensional heiarchy just like they usually refer to 4th world . Not saying mxy is weak because he is 5D but in your case they weren't referring to mxy existing beyond infinite dimensions .
In DC dimensions are weird and different similar to Dark tower cosmology . 3D brane universes are the size of bubbles in 4th world .
https://lh3.googleusercontent.com/-t16yM7dzFrs/Vpc4vTxQHdI/AAAAAAACVYA/P1ptgKf3nU8/w554-h522-p-rw/s9SAVgh.jpg
Realm of now is a realm adjacent to 5th dimension where each moment spans infinity and Eternity .
http://imgur.com/gSzWbMY
http://imgur.com/YaJP0I5
in 6th dimension regular universes are the size of paper .
http://i.imgur.com/dnvSfdq.jpg
Heaven dwarfs the physical universes in size . Even weaker gods like odin can create and held the universes in the hand .
http://vignette2.wikia.nocookie.net/vsbattles/images/8/8c/Odin_Feat_2.jpg/revision/latest?cb=20160920200707
http://static5.comicvine.com/uploads/square_medium/2/28079/1105016-kane_milohai__02__001__01_.png
DC cosmology is somewhat reminds of Dark tower which is shown in lucifer that he comprehend the very nature of void that exists beyond all the infinite layers of space and time or infinite dimensions
http://vignette3.wikia.nocookie.net/vsbattles/images/5/5f/Beyond_Time.jpg/revision/latest?cb=20161001232411
http://2.bp.blogspot.com/2rUhP6lfGy1_xjeRuMWJ-nx2lJmCiGs8Py6CMInCqdSK4a9-2r_5TiCeqTKdimSE1wiq8f3O8Wq9=s0
And endless who are existence themselves are referred as wave functions ( which create hilbert spaces ) .
In DC each dimension is vastly bigger then the other . Its not the same as other Multiverse size from other fictions .
Destiny exists beyond the source wall inside his own realm that weaves all of existence . The book of souls contains all the events from the beginning of his father time itself . Night and time are first concepts in the existence spawned from the void with the energy released by michael and lucifer . They predate all versions of creations and destiny holds the book which backgrounds all of existence . They are not some mere extradimensional beings that destroys physical universes . Every action they take may warp reality from the beginning of time as we seen with dream and desire when they warped the reality controlling the fates of dreams of thousand people it changed everything from the beginning of time .