If pokemon's nature didn't affect stats but instead affected their personalities, what natures would you what your pokemon to have?

I'd want an Impish Sableye, as they are little imps and I like their trickster element.
I'd want an Adamant Tropius, or essentially a proud one.
I'd want a Jolly/Naive Quagsire, I like the blank stare on their face.
I'd want a Brave Manectric, like a loyal dog.
I'd want a Timid Magcargo, because it could hide in it's shell.
And I'd want a Jolly Togekiss, since they are beings of pure joy.

Perhaps I put too much thought into this, but what do you think?

If that were the case, I'd want Adamant or Brave for most of them. I've even seen some weird combinations, like an impish Mewtwo, which doesn't seem right at all.

Adamant: utterly unyielding in attitude or opinion in spite of all appeals, urgings, etc.
Not a good personality for all pokemon, I only wanted my Tropius to be Adamant because I like the Ida of a proud, self-assured Tropius.

Well, I thought Adamant was the closest. Maybe Serious would be better.