[@Pathfinder][@Archmage MC]
I was talking about pokemon in general, not specifically sun and moon.
Must haves...
Typhlosion
Typhlosion
I really like Typhlosion.

That's really my only must-have. Here are some other ones that I like.
Scolipede
Weepinbell
Absol

Eh. There are others, but I'm not sure which I like the most.