An NPC you truly hate with passion

[Tetsujin]

Honestly? This is gonna be a weird one but...

THE SHROUD'S ELEMENTALS.
Finicky as all hells. Disloyal, since they were ready to abandon Gridania after one (1!) powerful Blasphemy popped up and scared 'em, despite the many, many years of devotion afforded to them. They seemed to be absolutely insane too, like "will kill you and your whole family if you pick the wrong plant" kind of insane in the past.
I'm not exaggerating, look.

The forest itself is known to take the lives of anyone who does not heed the Elementals, a danger often referred to as the "woodwrath".

And don't forget people lived in Gelmorra in fear of them in the first place!

I don't know how Gridanians are cool with possibly being uprooted by these things, imagine one day government changes and they say let's industrialize. What then?
Also, I know they've been weakened by Dalamud's fall and all but here's hoping they've chilled out... or that some insane Garlean madman drops a nuclear strike on them (lol) and finishes the job. They're the worst elementals too, the Eureka ones are so nice.