Being in an unusual predicament, Allie has the soul of another being named Alvyn with the opposite personality and gender living inside of her. To complicate matters, whenever she comes into contact with Kit, she and Alvyn switch places, putting the other in control. This being the case, one can only imagine all the trouble the party is about to wind up in...
Using the Switch skill, the party can change between Allie and Alvyn in battle, too. Given Allie's expertise with physical attacks and Alvyn's with magical attacks, it makes it all the more important to be able to discern when to use who on what enemies.