The Warrior of Light is not tempered by Hydaelyn.
1) "Ajora Glabados, first of the Zodiac Braves, was not the hero the church would have you believe. He betrayed Mother Hydaelyn for the promise of coin and power, summoning forth a terrible evil from the depths of the celestial abyss." -Orran Durai, from "The City of Lost Angels", cutscene #2.
2) "And if the liberator's visions are to be taken as fact, it also appears we now know what the High Seraph meant by 'blood of my invoker.'"
"She was not speaking of ancestors in the sense of actual kin, but the line of those chosen by Hydaelyn to serve Her as Warriors of Light." -Fran and Mikoto, from "The City of Lost Angels", cutscene #3.
By this we know that Ajora Glabados was a Warrior of Light, and that he betrayed Hydaelyn, something he would not be able to do if he was tempered.