Board Thread:Questions and Answers/@comment-61022-20160330220251/@comment-885277-20160330223232

The implication seems to be that some of them might have been existing characters, since a lot of the domains have the same designations (albeit with room for dispute, as The Many-Angled One noted) as the realities that they're based on, like Shadow Province being listed as "Reality-88194 or variant" and the Wastelands being "altered Reality-807128 or variant". The book's profile for the Phantom Eagle also counts the one from War Is Hell Vol 2 (established as being set on Earth-200111) and the Secret Wars tie-in Where Monsters Dwell Vol 2 as one and the same.