I figured I'd ask about this before the next Test Drive Meme goes up: What is the rule on characters who suffer from Dissociative identity disorder to such a degree that canon basically treats their alters as entirely different characters who actively interact with one another?

To translate the question into more practical sub-sections, I guess what I'm asking is whether these alters count as their own character in Ryslig too and thus I'd need to choose one of them, so that someone else has the opportunity to play the other(s). And if I'm allowed to play all alter at the same time, how does that work with the key traits that decide the monster type? Because each alter would have very different key traits, resulting in a very different monster.

If it helps, the character I'm thinking of right now is the main character of Moon Knight.