I'll do one for Primarina.
![image](https://img.pokemondb.net/artwork/large/primarina.jpg)
Poppy @Primarium Z
Moveset:
Sparkling Aria
Moonblast
Aqua Jet
Psychic
This set is pretty self-explanatory. Sparkling Aria is STAB and lets him nuke a target with his Z-Crystal, Moonblast is Dazzling Gleam but better, Aqua Jet because, "y'all sleeping on priority, that **** is clutch," and Psychic is for Poison-types. If you don't really care about priority, you can swap it out for Energy Ball or Ice Beam.
![image](https://img.pokemondb.net/artwork/large/vikavolt.jpg)
Vicky @Magnet
Moveset:
Bug Buzz
Thunderbolt
Energy Ball/Flash Cannon
Volt Switch
Vikavolt is one of those sleeper mons that not many people use, but the people who do use it mow down most of the in-game battles. Bug Buzz is his only special Bug STAB, just remember to store him in a box or smth once you get to Ula'Ula, because if you evolve Charjabug past Lvl. 31, you can't get it until the Move Reminder. Thunderbolt and Volt Switch are both Electric STAB and Volt Switch lets you get out of a tight spot. Finally, the third slot is for Rock-types who might trouble them. Conclusion: VIVA LA VIKA
![image](https://img.pokemondb.net/artwork/large/salazzle.jpg)
Sally @Poison Barb
Moveset:
Flamethrower
Sludge Bomb
Dragon Pulse
Toxic/Nasty Plot (if you don't have Corrosive)
Salazzle is a BEAST of a Pokemon. It dominates Totem Lurantis and Ribombee (maybe) and, with some careful strategy, fries Molayne. Flamethrower and Sludge Bomb are STAB, Dragon Pulse is useful chip against mons she can't hit very well with STABs, and the last slot depends on your ability. Corrosive > Toxic, and Own Tempo > Nasty Plot.
![image](https://img.pokemondb.net/artwork/large/dugtrio-alolan.jpg)
Duggy @Soft Sand
Moveset:
Iron Head
Earthquake
Aerial Ace
Shadow Claw/Filler
Come on, it's anime Dugtrio! Who wouldn't want to use it? IH and EQ are STAB, Aerial Ace covers Fighting-types (although not very well), and the last slot is up to you.
![image](https://img.pokemondb.net/artwork/large/mimikyu.jpg)
Pikaposter @Mimikium Z
Moveset:
Play Rough
Shadow Claw
Leech Life
Wood Hammer/Will-O-Wisp/Toxic
Mimikyu, aside from being the Ultra Necrozma cheese of choice for many a Trainer, is excellent in an in-game playthrough. PR is STAB and lets Mimikyu, like Primarina, use its Z-Crystal to nuke something. Shadow Claw is STAB and great for saying **** you to anything using Iron Defense and the like. Leech Life is some extra coverage plus healing if Mimikyu just won a bad matchup, and the last slot is either status, seeing as Mimikyu always gets a free turn, or Wood Hammer, because they felt the need to give it that for whatever reason.
![image](https://img.pokemondb.net/artwork/large/chesnaught.jpg)
Paladin @Leftovers
Moveset:
Wood Hammer
Hammer Arm
Iron Head/Rock Slide/Shadow Claw/Earthquake (Postgame only)
Spiky Shield
I know it sounds dumb. I know he's a slow, clunky Dumbo that's quad-weak to Flying.
But it fuckin' works.
Wood Hammer is great for slamming targets that other mons would have to rely on EBall or Wood Hammer for. Plus, the Lefties to a great job of softening the recoil. Hammer Arm is a crazy-strong STAB move that drops his already-trash Speed stat. Spiky Shield is great for predicting HJK and other things of that nature, plus it gives you a free turn of Lefties healing. Finally, RS, IH, and SH can be swapped in and out to kill Flying, Fairy, and Ghost respectively, while EQ covers Fire and is only obtainable after becoming Champion.
Locations (not gonna go over stuff you get as part of the story):
Catch a Munchlax on Route 1 for Lefties
Energy Ball is in Lush Jungle but you need Machamp
Shadow Ball and Aerial Ace are both in Konikoni iirc
Toxic is in Aether Paradise on the 2nd visit, just look around the starting area for a while and you should find it. REMEMBER TO GET THIS ONE, or else the Mimikyu cheese won't work and Ultra Necrozma will kick your ass.
Flash Cannon is in Seafolk Village outside the Steelix house
Sludge Bomb is in the Shady House inside the far top-left room
Poison Barb is in Melemele Meadow, you shouldn't miss it
Mimikium Z is in the Thrifty Megamart (Ghost trial site). You need to:
1. Beat Nanu's Grand Trial
2. Bring a Mimikyu that knows Play Rough to the Megamart at night
3. Go through the store and answer "Mimikyu...?" to all of the questions
Magnet is in Pikachu Valley, just go to the part of Route 4 with the rock and the two Lovers and take the path leading northeast.
Soft Sand is in the Melemele Sea on one of the Islands, so you need Lapras. If you don't want to go through all that trouble for a 20% power boost to one move, just... don't have him hold an item, I guess.
Finally, Rock Slide can be found on Route 17 by going up the rocky path and taking the farthest-left path down.
Everything else is either level up, move tutor, or given to you for free at some point or another.
Well, you read to the end, which means you respect what I had to say. Thanks for reading, and I hope this team works for you!