What decides the pokemon of a dual type's type in the montage after beating alder?

Question

You know how after you beat alder, and it displays your team pokemon...How does it decide the main type? Hydreigon for instance would show the dark type.

Answer 1

It is whatever type appears first in either the pokedex or the summary of the pokemon. So for unfezant, since he is normal/flying, his background would be normal. Hope this helps!