60highest level
This is around Pallet Town to Pewter City in the story — that page lists everything you can have caught by this point.
Types on this team: GrassPoison
| Pokémon | Moves | |
|---|---|---|
 | Gloom Lv 60 · Chlorophyll · Chesto Berry Postgame. Its level is set to match your lead Pokémon when the fight starts; the stored level is shown · Adamant nature · EVs 4/252/252/0/0/0 | Charm Sludge Bomb Swords Dance Rest |