43level cap
Gym Leader Koga (fifth or sixth gym) fields 6 Pokémon between level 42 and level 43 in Fuchsia City Gym.
This is around Rainbow Badge — the Pokémon Tower and Fuchsia City in the story — that page lists everything you can have caught by this point.
Types on this team: Poison ×5Dark ×2ElectricFlyingGhostPsychicWater
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Tentacruel Lv 42 WaterPoison | Ability Clear Body Held item Sea Incense Adamant nature · Level 42 or 46, depending on how far into the story you fight them | Surf Substitute Toxic Sludge Bomb | HP80Attack70Defense65Sp. Atk80Sp. Def120Speed100Total515 |
 | Muk (Alola) Lv 42 PoisonDark | Ability Sticky Hold Held item BrightPowder Bold nature · Level 42 or 46, depending on how far into the story you fight them | Crunch Sludge Bomb Minimize Giga Drain | HP105Attack105Defense75Sp. Atk85Sp. Def95Speed50Total515 |
 | Gengar Lv 42 GhostPoison | Ability Levitate Held item Spell Tag Docile nature · Level 42 or 46, depending on how far into the story you fight them | Shadow Ball Fire Punch Ice Punch Hypnosis | HP60Attack80Defense60Sp. Atk120Sp. Def75Speed110Total505 |
 | Slowbro (Galar) Lv 43 PoisonPsychic | Ability Speed Boost Held item Qualot Berry Serious nature · Level 43 or 47, depending on how far into the story you fight them | Sludge Bomb Psychic Flamethrower Ice Beam | HP95Attack110Defense95Sp. Atk100Sp. Def70Speed30Total500 |
 | Electrode Lv 43 ElectricDark | Ability Soundproof Held item Magnet Gentle nature · Level 43 or 47, depending on how far into the story you fight them | Thunderbolt Toxic Explosion Frustration | HP70Attack70Defense70Sp. Atk90Sp. Def80Speed140Total520 |
 | Crobat Lv 42 PoisonFlying | Ability Inner Focus Held item Scope Lens Naive nature · Level 42 or 46, depending on how far into the story you fight them | Aerial Ace Sludge Bomb Giga Drain Shadow Ball | HP85Attack90Defense80Sp. Atk70Sp. Def80Speed130Total535 |
How to beat this team
Shared weaknesses. Ground hits 5 of 6, Psychic hits 3 of 6, Dark hits 2 of 6, Electric hits 2 of 6.
Level to be ready for. Lv 43 — Slowbro (Galar), the highest on the team.
Ground Pokémon you can have caught by this point. From this guide’s own encounter tables, by Rainbow Badge — the Pokémon Tower and Fuchsia City: