Try tamalove.pixelmood.com. They've got quite a few of the characters on the Connection/Connexion 2 character list. Your best bet for all the other characters is tinkerville.com. They don't really have a Connection/Connexion 2 chart, but they've got some of the characters that Bandai threw in there like from the Osu/Mesu, P1/P2, etc.
