Girls Next Door
However if you want to know what happened from one fans point of view there is GND - Girls Next Door by Pika La Cynique. The premise of the story being that Sarah from Labyrinth moves into a flat with Christine from the Phantom of the Opera and have to deal with their relative stalkers - Jareth the Goblin King and Eric the Opera Ghost who happen to live in the flat below them.
The first comic strip can be found here
Along with the main quartet, the cast is ever growing creating its own universe. A canon verse where the characters from original works live, work and go to college. We see regular guests in Javert from Les Miserable, James Norrington from Pirates of the Caribbean, Elizabeth Swan-Turner (same movie), Luna Lovegood from Harry Potter, Legolas from Lord of the Rings, Azrael and Crowley from Good Omens. Also much less frequent cameos from Sweeney Todd, Star Wars, Firefly, Beetlejuice, Twilight & many many others.