The cast of Bishoujo Senshi Sailormoon is quite large, but I'm working my way through them. Slowly. As of now, I've got profiles of most of the characters - haven't gotten 'em all yet, but I have all the major ones. WARNING - the villain profiles contain major spoilers. (Mostly because all you can say about some of them is "appeared at this point. Promptly killed by so-and-so in this manner.")
Please tell me if my information is incorrect. My Japanese is anything but wonderful, and I may have misinterpreted the manga.