Ok I'm convinced. The music page was put up first to provide an idea of characters added.
Someone from Chrono Trigger, Xenosaga, Kingdom Hearts, Animal Crossing, MOTHER 3(!), Streets of Rage, NiGHTS, (more) Metroid characters, Contact(?), Pikmin, Fire Emblem, Golden Sun, and more are possibilities! I don't think every game/series listed will see characters, but I bet that any musician listed for a non-Nintendo company has a character coming from at least one of the listed projects. It only makes sense, I mean, look at the first musician on the list. Metal Gear games are all over his list. I can't believe it! I know people are going to say there isn't much on the site, but this is HUGE! to me. Absolutely amazing!