Nausicaa, some of the Manga

 https://halcyonrealms.com/books/nausicaa-of-the-valley-of-wind-deluxe-edition-vol-2-manga-review/

It looks like in one panel, the top color one, she's hanging out with one of the ancient giant warrior things (the wonky teeth, super mouth laser beam dudes). So are they natural and neutral? But somehow controlled by the bad folks? 

And look, the giant warriors had armor made by people, eh?