Pokémon you haven't used yet, but want to!

Incineroar! I have an Adamant HA Incineroar I haven't gotten to training yet!

I want to be able to use a Sneasel in my playthrough without the hassle of encountering it too late in the game.

I'd love to use a Yanmega. Problem is that by the time I get to the Great Marsh in Sinnoh, my team is usually filled out. Same is true for Pinwheel Forest and Route 3 in BW2. I always forget you can get Yanma in XY, and other than that there really aren't any other places you can get Yanma.

Primeape, Arcanine, Yanmega, Ferrothorn, Bewear, the psychic oragutan in alola and especially Stoutland are high on the list of "interesting goodmon that I should use sooner rather than later ingame"

I'm looking forward to using a Gothitelle in my current Black playthrough. Have used Reuniclus before and I loved it, so let's see how its counterpart does.