29level cap
Team Rocket Boss Giovanni fields 3 Pokémon between level 24 and level 29 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: Ground ×2Rock ×2Normal
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Onix Lv 25 RockGround | The game’s documentation doesn’t list this trainer’s exact moves. Level-up moves Onix knows by Lv 25 in Pokémon Classic: Rock Polish Gyro Ball Smack Down Dragon Breath | HP35Attack45Defense160Sp. Atk30Sp. Def45Speed70Total385 | |
 | Rhyhorn Lv 24 GroundRock | The game’s documentation doesn’t list this trainer’s exact moves. Level-up moves Rhyhorn knows by Lv 24 in Pokémon Classic: Scary Face Smack Down Stomp Bulldoze | HP80Attack85Defense95Sp. Atk30Sp. Def30Speed25Total345 | |
 | Kangaskhan Lv 29 Normal | The game’s documentation doesn’t list this trainer’s exact moves. Level-up moves Kangaskhan knows by Lv 29 in Pokémon Classic: Bite Double Hit Rage Mega Punch | HP105Attack95Defense80Sp. Atk40Sp. Def80Speed90Total490 |
How to beat this team
Shared weaknesses. Fighting hits 3 of 3, Grass hits 2 of 3, Ground hits 2 of 3, Ice hits 2 of 3.
Level to be ready for. Lv 29 — Kangaskhan, the highest on the team.
Fighting Pokémon you can have caught by this point. From this guide’s own encounter tables, by Thunder Badge — Rock Tunnel to Celadon City: