Lost Queen : There were quite a few things that could be seen as a betrayal. Going against our ways such as pursuing romantic love, murdering a fellow Kuros outside of the mating rites tournaments, fighting agains’t your people (switching sides to fight for good), the list goes on.
Those that were banished were known as Raiocht’Nol (Ray-Oct-Nall). It doesn’t quite translate to outlaw, but rather just a Kuros cursed with the Mark of Betrayal ( Comhith’Dol Raiocht).
