21highest level
Cooltrainer Mercc fields 4 Pokémon at level 21 in Dewford Town Gym.
This is around Badge 1 — Rustboro City Gym (Leader Dan) in the story — that page lists everything you can have caught by this point.
Types on this team: Poison ×4Water ×4
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Tentacool Lv 21 WaterPoison | Ability Liquid Ooze Held item Black Sludge | Water Pulse Supersonic Wrap Acid | HP40Attack40Defense35Sp. Atk50Sp. Def100Speed70Total335 |
 | Mareanie Lv 21 PoisonWater | Ability Merciless Held item Leftovers | Baneful Bunker Bite Venoshock Recover | HP50Attack53Defense62Sp. Atk43Sp. Def52Speed45Total305 |
 | Skrelp Lv 21 PoisonWater | Ability Poison Point | Double Team Water Gun Acid Tackle | HP50Attack60Defense60Sp. Atk60Sp. Def60Speed30Total320 |
 | Qwilfish Lv 21 WaterPoison | Ability Intimidate Held item Rocky Helmet | Fell Stinger Spikes Brine Minimize | HP65Attack95Defense85Sp. Atk55Sp. Def55Speed85Total440 |
How to beat this team
Shared weaknesses. Electric hits 4 of 4, Ground hits 4 of 4, Psychic hits 4 of 4.
Level to be ready for. Lv 21 — Tentacool, the highest on the team.
Electric Pokémon you can have caught by this point. From this guide’s own encounter tables, by Badge 1 — Rustboro City Gym (Leader Dan):
- Geodude (Alola) — Granite Cave, Lv 11
- Joltik — Petalburg Woods, Lv 2
- Pawmi — Route 101, Lv 2
- Wattrel — Route 103, Lv 2