Hero - The default role the majority of players will take on. Antiheroes are included under this umbrella. As a hero player you may submit a character either to participate in the main universe or you may submit your own 'What If' and play within that multiverse with the option to either open it up to other players or crossover with the GM-run 'main universe' at a later time.

Villain - Some players may opt instead to write as a villain. There are a couple of additional guidelines associated with this role. Anti-villains are included under this umbrella. As a villain player you may submit a character either to participate in the main universe or you may submit your own 'What If' and play within that multiverse with the option to either open it up to other players or crossover with the GM-run 'main universe' at a later time. However, as a villain character, if the 'parent' hero character is in play in the 'main multiverse', the villain character falls under their purview within that universe. Outside of that, you are free to play the villain in their own 'What If' or on invitation from another player to their own multiverse.

Invader - On a voluntary basis, players may take on this dual role and be either a Skrull or a Martian in addition to their choice character. For example, if a player is writing Batman, they might also want to secretly be a Skrull and it would be up to other players to suss that information out. In the event of two players both wanting to be Batman, one can volunteer to be a Skrull in a private conversation between both players and the GM so as not to spoil the surprise in the IC. Invader characters can only be played in the main universe.