@Moon Man Simon is basically a perfect example of an Inheritor. A simple warrior that is able to tap into empowering metaphysical energies through willpower and enlightenment. In general, if the "endgame character" analogy isn't doing it for you, feel free to think of your characters as "anime protagonist in the last fight in the last episode with the OP playing behind them."
The Anti-Spiral is also a pretty good example of what you all would be up against. A collective consciousness that has ascended to a higher state of being through negative evolution.
I can start working on the OOC/CS soon, so I think you all should start thinking about characters. In general, the most important info I'm going to want from you is going to involve where your character is from (so, what their home world, race, culture, etc is like), what their journey has been like so far, and what has triggered their ascension. I'm leaving character options pretty wide open, but these are the two categories that characters will fall under:
WHITE-SOUL INHERITORS, also called SUSTAINERS, are order-aligned beings with souls forged from the cool, white flame. They are destined to create, build, and maintain the universe. They do not die of old age, and are often born imbued with great powers, but they are typically creatures of habit that have difficulty breaking away from their "intended" purpose. Angels, Elves, Dragons, etc, are White-Soul Inheritors.
BLACK-SOUL INHERITORS, also called PERCIEVERS, are chaos-aligned beings with souls forged from the warm, black flame. They have no pre-written destiny, and can excel at any pursuit or craft that they apply themselves to. However, they cannot live forever (though many go to great lengths to prolong their finite lives) and are usually born weak and vulnerable, and must earn their power throughout their lives. Devils, Humans, Goblins, etc, are Black-Soul Inheritors.