5level cap
Rival (Squirtle) fields one Pokémon at level 5 in Pallet Town Professor Oak's Lab.
This is around Pallet Town to Pewter City — Lv. 14 cap in the story — that page lists everything you can have caught by this point.
Types on this team: Water
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Squirtle Lv 5 Water | Ability Torrent | Tackle Tail Whip | HP44Attack48Defense65Sp. Atk50Sp. Def64Speed43Total314 |
How to beat this team
Shared weaknesses. Electric hits 1 of 1, Grass hits 1 of 1.
Level to be ready for. Lv 5 — Squirtle, the highest on the team.
Electric Pokémon you can have caught by this point. From this guide’s own encounter tables, by Pallet Town to Pewter City — Lv. 14 cap: