Quote Originally Posted by Yshnal View Post
Primals don't temper passively. They temper when they actually want to do it. We have to take into account the circumstances surrounding Hydaelyn's summoning to see that it's actually feasible that she hasn't felt the need to temper anyone, or that doing it might be against her nature. Regardless, while most of the primals that we know use tempering to control their subjects, it's perfectly possible that tempering someone doesn't involve a will to control.
Keep in mind that Hydaelen and Zodiark are not our typical primals. The rules we know for tempering and such may differ with these two. It could be that they temper just by exposure to them, or a passive tempering. It may be something that just happens. At the same time, being tempered by either also appears to leave one's own free will intact. Hydaelen and Zodiark operate on a different rule set due to them being on a completely different level of power.