Oh yeah, I went there.
ETA: Andre and Firmin are actually the (retiring) superintendents of the Apartment. They left Opera in hopes of getting away from ghosts... see how well that worked.
Andre and Firmin belongs to Leroux and Webber.
Norrington belongs to Disney, Bruckheimer, and Davenport.
Javert and Valjean belongs to Hugo, Boublil, Schonberg, and Kretzmer.