Quote Originally Posted by ICountFrom0 View Post
Notice the mechanic of Susano's summoning. If he is a primal, he was not summoned with the intentionally flawed ascian methid, this lets him be not unto a hole in the world consuming everything, and also not leaking in such a way as to temper those around him.

If we allow this as a possibility, then the 4 lords (5?) who gained power slowly and transformed into primals after such a very very long time are not tempering for the same reasons. They say they are not primals, but as the very definition of primal includes tempering and an endless hunger for aether, can we really blame them for having this small mistake?

For a third example, I give you Enkidu.
Susano appears in Endwalker alongside all of the other primals to help power the Ragnarok, even being one of the only two (alongside Garuda) to get any lines. So, although he may not be summoned through the Ascian method, he IS a primal.

The Four Lords are not considered primals. Nothing summoned them, and they have distinct physical bodies, rather than an aether construct mimicking a body.

Enkidu doesn't stick around long enough to have a chance to temper anyone but Gilgamesh. And since Greg's from another world across the Rift, he may not even be vulnerable to tempering in the first place. It's vague and (due to being a comedic side quest) will probably never be explained.