Yea, RULE's right about Decimal. Even if he's not the same person as RAP DEMON (aka Fusion-x) they've shared logins and Fusion-x has multi accounts that pre-date October of last year.
SOURCE:
http://www.letsbeef.com/forums/showthread.php?t=107703
http://www.letsbeef.com/cheaters.php?u=885016
---------- Post added at 03:36 PM ---------- Previous post was at 03:35 PM ----------
Everyone else seems straight. Even if they're not new to battling, they seem to be rookie accounts on LB.