Here are some Pokémon I am intent on using once I get either version when they come out.
-Popplio (The Starter)
I am on Team Poppplio, btw. I hear that it might evolve into a Water/Fairy Type based on a sea siren according to a certain source. If that is the case, I might just have myself a handy special attacker that would have more to work with than Samurott, in my opinion.
Intended nicknames: Trans-Ariel, Sonata, Stefano, Enchantress, and Pacifica.
-Gumshoos
Mainly for the first half of the story, depending on how much good it can do for me in battle. Even if it's not part Dark-Type, like I thought it would be, there is no stumping the Trump, after all. Worst case scenario, I could always just use it as a HM Slave to get through obstacles.
Intended nickname: Trump (Duh!)
-Vikavolt
Most definitely using this wicked electrifying bug, since Alola is most likely gonna be full of Water Types. This will be really handy until I can find another particular teammate once I reach a certain point in the game for me to do so. Even if I do find this new teammate, Vikavolt will still do me some favours against any Grass and Psychics I will be fighting late-game.
Intended nicknames: Gundam, Shockwave, Thorax, and Peridot.
-Lurantis
This is the new teammate I was talking about. While Leaf Guard seems like a less than stellar Ability, that's not gonna stop people like myself from raising this beautiful floral mantis on our team.
Intended nicknames: Flora, Pinkamena, Peebles, and Wendy.
-Salandit
I like myself a sinister Pokémon whenever possible, and Salandit has definitely earned my approval. Fire/Poison will have so many uses throughout the game, I reckon. I'm very certain it will evolve, unless this is debunked in the coming months.
Intended nicknames: Joanna, Popple, Swiper, and The Lizard.
-Drampa
Dragons are awesome, and owning an elder that could eat Grass all day in battle with Sap Sipper is definitely worth an addition late-game. I may use it as a Body Slammer for an occasional ParaHax, if it can learn such an attack, that is.
Intended nicknames: Uncle Drampa, Drunkle, Falkor, Elliot, and Jolly Green.