12highest level
Fought at Ecruteak City.
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: Poison
| Pokémon | Moves | |
|---|---|---|
 | Koffing Lv 12 | Poison Gas Tackle Smog Smokescreen |