[@Crimson Flame]

I'm going to say no; I set this as a large group rp, and even with some of the rules I've made, single players with multiple characters will become confusing very quickly.

One Character per player. There can be important npc's connected to the Character (Alfreds, Aunt May's and Mary-Janes, that kind of stuff), but that's it. Sidekicks are out, too, as it's the same as having 2 characters.