By this point, it should be obvious who the cloaked men are supposed to be, but if you want to keep up the guessing game a little longer, ignore the credits below. As for who's talking in the second panel... well. That you'll have to keep guessing for a while.
Erik belongs to Leroux and Webber.
Jareth and Sarah belong to Henson, Lucas, Bowie and Connelly.
Norrington belongs to Disney, Bruckheimer, and Davenport.
Javert belongs to Hugo, Boublil, Schonberg, and Kretzmer.