From the introduction:
In a classic Disney Princess movie, you can always count on four character types to show up: The Hero, whose job it is to rescue the Princess and slay the Villain; The Villain, whose job it is to use the Princess for nefarious purposes; The Princess, whose job it is to be pure and noble in the face of adversity; and The Support, whose job it is to make sure everyone else can do their job and to keep us entertained. Rather than let you join any Disney story you feel like, we're making a Disney kingdom in which you are to be placed, and you are to choose three characters from Disney Animated films to take over three of the character types. You must pick a canon Disney villain to be a villain, a hero to be a hero, a princess to be a princess, and a supporting character to take the supporting role. If a character played multiple roles over the course of their movies, you can pick one role for them to take up at the start of the jump. Oh, whose taking the fourth role? Well, I guess we can't just have leave that gap empty...