[quote=Assallya]
Edit: On second thought.... maybe we're looking at this wrong.Why not change the backstory a bit so that somehow whoever the alternate personality actually belongs to someone, maybe it's someone in a coma... or someone who was dying. Thus the Professor would focus not on curing Aya but helping the two co-exist until somehow, via mutant power or technology, the ability to separate them becomes available.
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Um... Rather than look at this from a logical and reality-based angle, can we look at this from a fictional angle. You're kinda taking all the fun of this out for me. And I know true mental diseases aren't fun, but this isn't supposed to be an accurate reflection of reality. For Christ's sake, this is a world of mutants. Why put a real spin on it? Shit, if that's the case, why isn't Deadpool on meds?

Also, (as I stated previously) Aya is a mash-up of Tea and Ayame's pre-murder-of-Ariel-self, May is all the anger she has at herself directed toward the rest of the world... and herself, and Discharge is a personification of the mental unbalance she's suffering from having two extremes in her mind. The mediator. Discharge basically exists to lessen the burden of stress May's presence places on Aya, therefore preventing rapid shifts from one to the other, and (for the most part) keeping Aya in charge. Also I wanna break the fourth wall, and Discharge is perfect for that.