20highest level
Psychic Nelson fields 2 Pokémon at level 20 in Route 39.
Fought at Route 39.
This is around Beat Whitney — Goldenrod City Gym, badge 3 in the story — that page lists everything you can have caught by this point.
Types on this team: Psychic ×2Water ×2
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Slowking Lv 20 WaterPsychic | Ability Oblivious | Tackle Growl Water Gun | HP95Attack75Defense80Sp. Atk100Sp. Def110Speed30Total490 |
 | Slowbro Lv 20 WaterPsychic | Ability Regenerator | Curse Headbutt Water Gun Confusion | HP95Attack75Defense110Sp. Atk100Sp. Def80Speed30Total490 |
How to beat this team
Shared weaknesses. Bug hits 2 of 2, Dark hits 2 of 2, Electric hits 2 of 2, Ghost hits 2 of 2.
Level to be ready for. Lv 20 — Slowking, the highest on the team.
Bug Pokémon you can have caught by this point. From this guide’s own encounter tables, by Beat Whitney — Goldenrod City Gym, badge 3: