Phantom of the Opera

I am really enjoying this book so far. It provides a lot of background depth to the characters, and it is a lot of fun for me to read. For example, Leroux goes in depth about Raoul's family, while in the musical you hear no mention of any sort of family. Of course in a limited time you must eliminate things that don't add substance to the main plot, so reading this book gives a wonderful background to the characters. Phillipe, his older brother was given the primogenture as "His two sisters and brother, Raoul,... waived their claim to their shares"(19). This establishes Raoul very quickly as either a very passive character, or a very caring one. In fact only a few pages later the latter is confirmed as he asks after Christine has fainted that "Don't you think. .. that those gentlemen had better cleared the room?"(22). In the musical you don't see more of his personality, only really how he feels towards Christine. However you do recognize where the musical got the characterization as one of my favorite lines so far comes from Raoul "One idea alone filled Raoul's burning brain: of course, Daaè wished to be left alone for him! "(24). I think it's funny that he is at first portrayed as a caring young boy,  and so his thoughts turn to himself that of course Christine was waiting for him,  since he thinks himself amazing. This tends to be a problem with nobility, and I think Leroux did a very good job portraying pompous nobility.
Anna Marie- Are there any other characters that are similar to Raoul in the book? Not just directly the same, but also a character that seems one way only to have their whole character expanded by one line.