-----
The history behind the world where Hades and Cronos originated from was rather complicated, despite being from Greek Mythology, this world enjoyed having various gods aside from Greek Mythos. The gods from all these mythologies were born from humanity, and stayed permanently overlooking the areas where they were born by human's prayers. Similarly to Frank's Earth, but not as ridiculous in certain ways, while still being even more ridiculous with other ways. The power of these gods was always clashing against one another, and several cultures were guided by the gods they created into wars, while cultures that should had been long gone in the original Earth remained alive in this parallel Earth.
