[quote=MistressCyanide]
Sounds like Legion to me, if done the same way I don't really see a problem. One power per persona and the powers can't cross then I don't see it as OP. Also your not a walking nuclear bomb either.
[/quote]

*Researches Legion real quick*

Huh... yeah, that's it. The only difference is the base power remains the same. Energy beams. It's just they take on different attributes based on the current personality. Well, and her hair color, length, and style changes based on who is in control. But no, the attributes can't cross. Still debating on whether or not they can talk to each other. Cause that could make issues with talking to oneself.