Schiller—a name that ought to have been familiar throughout Battleworld.
More precisely, the name familiar to people in Battleworld should have been "Greed." Most superheroes simply could not tell the difference between them. They did not know they were different personality traits of the same person and assumed they were counterparts from different universes. In any case, Schiller was quite famous.
However, once Battleworld opened, not everyone logged in immediately. Basically, only Players who had participated in the closed beta would accept the invitation without hesitation, enter that mysterious space, and queue for a game right away.
Most people who had never participated in this kind of game were wary of it. Most Batmen would even choose a sufficiently secure place to store the invitation, lest some evil creature jump out of the thing one day.
Earning the trust of so many Batmen was quite a difficult task, and it had always been the goal of Battleworld's founders. Since they truly were capable of extraordinary things, they had made considerable progress.
The main reason was that Batman in any universe could be described as plagued by disasters. When their universe faced an unsolvable problem, they would try any method. Injustice Batman was one such case.
But that also meant Players entered Battleworld at different times, rather than all at once.
After discovering that he had become famous across the Multiverse, Greed deliberately controlled how often he entered the game. That did help salvage his reputation to some extent and turned him into a figure who existed only in legend.
Batman was not the type to voluntarily share intelligence with others, even if those others were themselves from different universes. They would certainly hold something back, even when asked. Unless the other party could offer information of sufficient value in exchange,