User blog comment:Pualover/Overlord Power Level/@comment-34687860-20180213191952/@comment-45.56.46.26-20180605163218

Well, that story implies it to some degree, however, it is (quite obviously) an alternate story rather than following the established canon of story events, thus there is no certainty.

Unless it turns out to be canon that an alternate version of Momonga arrived in the New World at the time of the Thirteen Heroes, and then quietly avoided becoming known to the predominant history of the New World. This might not be implausible, given his essential character. Suzuki is the type to avoid throwing his weight around. Without Nazarick, he might choose to quietly blend in rather than stand out too much.

After all, while Maruyama has implied that no other members of Ainz Ooal Gown will show up, it hasn't actually been said that alternate Momonga isn't running around somewhere in the New World. Which could cause the most fascinating problems.