21highest level
Team Rocket Grunt (11) fields 2 Pokémon at level 21 in Rocket Hideout.
This is around Thunder Badge — Rock Tunnel to Celadon City in the story — that page lists everything you can have caught by this point.
Types on this team: Poison ×2Flying
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Koffing Lv 21 Poison | The game’s documentation doesn’t list this trainer’s exact moves. Level-up moves Koffing knows by Lv 21 in Pokémon Classic: Smokescreen Assurance Clear Smog Sludge | HP40Attack65Defense95Sp. Atk60Sp. Def45Speed35Total340 | |
 | Zubat Lv 21 PoisonFlying | The game’s documentation doesn’t list this trainer’s exact moves. Level-up moves Zubat knows by Lv 21 in Pokémon Classic: Bite Wing Attack Confuse Ray Air Cutter | HP40Attack45Defense35Sp. Atk30Sp. Def40Speed55Total245 |
How to beat this team
Shared weaknesses. Psychic hits 2 of 2, Electric hits 1 of 2, Ground hits 1 of 2, Ice hits 1 of 2.
Level to be ready for. Lv 21 — Koffing, the highest on the team.
Psychic Pokémon you can have caught by this point. From this guide’s own encounter tables, by Thunder Badge — Rock Tunnel to Celadon City: