Update Four
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I tested a few things out against Cheren in this Route 10 fight. If Crustle doesn't get taunted, it can Shell Smash x2 and sweep. Simipour can use Work Up and then OHKO Cheren's entire team with either Surf or Blizzard. The other Pokémon performed rather poorly here. Golurk gets stopped by Simisage, Klang gets stopped by Emboar, Serperior gets stopped by multiple things, and Throh can't set up against Air Slash Unfezant.
Victory Road was rather tame. Each Pokémon pulled their share of the weight. Coming into the Pokémon League... I feel severely underleveled.
- Crustle (45): Rock Slide / X-Scissor / Dig (Shadow Claw) / Shell Smash @ Expert Belt (Spell Tag)
- Simipour (45): Surf / Blizzard / Grass Knot / Work Up @ Mystic Water (Expert Belt)
- Serperior (44): Leaf Blade / Return / Leech Seed / Coil @ Shell Bell
- Golurk (44): Magnitude / Shadow Punch / DynamicPunch / Fly @ Soft Sand
- Klang (43): Gear Grind / Charge Beam / Autotomize / Flash Cannon @ Eviolite
- Throh (42): Revenge / Storm Throw / Dig / Bulk Up @ Rocky Helmet
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CAITLIN
I tried using Klang here, but it gets OHKOed by Focus Blast even with Eviolite. Crustle is able to Shell Smash and hang on using Sturdy when Reuniclus uses Psychic. Afterward, it outsped everything and OHKOed with Expert Belt boosted attacks. Golurk can KO Reuniclus, Musharna, and Gothitelle in a 1-on-1 scenario, but can't exactly sweep. None of my other Pokémon stood a chance.
GRIMSLEY
First try was Throh. You can set up +6 Bulk Ups against his lead Scrafty, who attempts to piss you off with Sand Attack. If you manage to hit your other attacks and avoid Liepard's Attract shenanigans, this is an easy sweep. Crustle can actually Shell Smash 2/3 times against Scrafty if it tries to get cute with Sand Attack and sweep the rest of Grimsley's team.
SHAUNTAL
I attempted to teach Crustle Shadow Claw over Dig... which didn't really work. Cofagrigus and Jellicent tank even +2 Spell Tag Shadow Claw. Best bet for me in this fight was to weaken Cofagrigus with either Crustle or Golurk, sacrifice them, and then set up with Work Up Simipour @ Expert Belt. With Grass Knot and Surf, Simipour can handle Jellicent, Golurk, and Chandelure. Serperior is useless and so is Throh due to Mummy.
MARSHAL
Throh tends to use Bulldoze the first two turns, which allows you to set up Leech Seed and Coil with Serperior for free. Due to Throh's high base HP, you recover a ton of HP per turn, so you can easily set up to +6 with Coil. I opted for Shell Bell in this fight because you're going to be taking small amounts of damage from everything after being slowed down. Easy sweep with Serperior though. Throh also NEVER uses Storm Throw against Serperior until it runs out of Stone Edge PP because the game sees it as weaker than Stone Edge. If you remove or weaken Throh (Payback), Fly Shell Bell Golurk can sweep with an X Attack. The only thing that Golurk doesn't resist is Grass Knot, and the AI does not recognize the effectiveness of variable BP moves. Everything else on the team is dead weight in this matchup.
N
Reshiram is hellish. Crustle barely survives Fusion Flare, but doesn't even hit enough Speed after Shell Smash to be able to attack. My best bet here was to tank Fusion Flare with Crustle / Throh / Golurk and eventually KO Reshiram. Afterward, I was able to use Klang to wall N's Klang and get my team back up to speed with some Revives and Potions. After Klang goes down, N sends out Vanilluxe. Eviolite Klang walls this completely, and as long as you have enough healing at the ready, you can set up to +5/+6 with Charge Beam and +4 with Autotomize and OHKO the remainder of N's team. Nothing else was particularly noteworthy here.
GHETSIS
Simipour was in the lead for whatever reason. I was able to Work Up and 2HKO Cofagrigus and do 50% to Bouffalant before succumbing to attacks and Toxic damage. The combination of Head Charge damage and Rocky Helmet allowed me to set Throh up to +3 while Bouffalant killed itself to recoil. That didn't last very long, however, as Hydreigon crit OHKOed me with Dragon Pulse. Klang sacrificed itself to revive Throh while Crustle made use of Sturdy to get off one last hit. Throh finished off Hydreigon with Storm Throw. Golurk weakened Eelektross while Serperior knocked it and the subsequent Seismitoad out at +1. After seeding and dying to a crit, Serperior paved the way for a final Storm Throw from Throh against Ghetsis's Bisharp, ending the match.
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THE END
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Serperior (46) =
C
Early availability, middling-to-weak strength, but has some decent matchups and set-up opportunities
Simipour (47) =
A
Early availability, strong middle-game with early evolution and Scald, decent late-game with coverage, curbstomps most important fights
Throh (47) =
A
Early availability, consistent set-up opportunities due to bulk, useful ability, strong sweeping capabilities and survivability
Crustle (47) =
B
Decent availability, good coverage for in-game, decently early access to Shell Smash, good set-up opportunities (Sturdy)
Klang (44) =
C
Decent availability, easy to set-up due to typing and bulk (Eviolite), unlikely to reach final evolution, let-alone Shift Gear
Golurk (46) =
D
Late availability, weak/inconsistent STABs, common weaknesses, but useful typing in some situations