When I have the OOC up along with the character sheet there will be a bunch of races there. I'd say there won't be any Massassi, until far laterrrrrr in the game. Ithorians, Selkath, Twi'leks, Mandalorians are allowed if they kind of have lived away from the clans and the codes of honor as well as those later in-game characters who may be P.O.W.'s or perhaps defectors. Zabraks, Echani, a few others I have listed in the CS but yeah. There's no real limitation other than to select things that make sense.