The Hellbound Hearts is a fanfic that Da Games Elite started working on after he saw Disney's House of Villains
. He found the movie to be a major dissapointment and it inspired him write this epic crossover.
The first two or three chapters are just plain good, providing a realistic fusion of the Disney Animated Canon with everyone in character. After that, it escalates to this epic story with multiple POV's, villain and hero alike.
Unfortunately, it hasn't been updated in awhile.