19highest level
Gentleman Arthur fields 2 Pokémon at level 19 in S.S. Anne 1F Room 5.
This is around Cascade Badge — Vermilion City — Lv. 25 cap in the story — that page lists everything you can have caught by this point.
Types on this team: Poison ×2
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Nidoran♂ Lv 19 Poison | Ability Poison Point | Peck Focus Energy Double Kick Poison Sting | HP46Attack57Defense40Sp. Atk40Sp. Def40Speed50Total273 |
 | Nidoran♀ Lv 19 Poison | Ability Run Away | Scratch Tail Whip Double Kick Poison Sting | HP55Attack47Defense52Sp. Atk40Sp. Def40Speed41Total275 |
How to beat this team
Shared weaknesses. Ground hits 2 of 2, Psychic hits 2 of 2.
Level to be ready for. Lv 19 — Nidoran♂, the highest on the team.
Ground Pokémon you can have caught by this point. From this guide’s own encounter tables, by Cascade Badge — Vermilion City — Lv. 25 cap: