Originally Posted by
Tanker4444
In the keynote we were told that in the first area we will visit there is a legend that one day a Warrior of Darkness will come and save them from the encroaching light.... I suspect that´s where the whole warrior of darkness thing will come from as news and rumors of a champion from a faraway place spread in our wake.
That said, warriors of light are, near as I can tell, heroes that rise up to fight some evil or avert a catastrophe, usually at the behest of Hydaelin. They may or may not have light crystals, since others we know such as Ysayle have crystals but arent warriors of light; and the other two warriors of light we know of, Ramza and Tenzen, may or may not have had crystals. Over the ages these heroes invariably rose to prominence in the eyes of the people who started calling them Warriors of Light. At least thats what I can gather, maybe the Eorzea encyclopedias offer more insight on how the term came to be used.