Talk:Demon Realm/@comment-25075355-20150913120028/@comment-25035274-20150915140448

Allow me to bold from the same article:

"Since it exists in another dimension, one can't enter without the assistance of the queen or one of the monster residents."

Pocket dimension. In other words, it is not geographically a part of the main MGE world. That said, I think KC pretty much qualifies the pocket dimensions (Wonderland, Pandemonium, etc) as a type of Demon Realm, so... Yeah.