17level cap
Red Mt. Moon (Wartortle line) fields 4 Pokémon between level 16 and level 17 in Mt. Moon.
This is around Boulder Badge — Mt. Moon and Cerulean City in the story — that page lists everything you can have caught by this point.
Types on this team: Poison ×2BugElectricWater
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Beedrill Lv 16 BugPoison | Ability Swarm Held item SilverPowder Lonely nature | Secret Power Fury Attack Fury Cutter Harden | HP65Attack95Defense55Sp. Atk45Sp. Def80Speed100Total440 |
 | Pikachu Lv 16 Electric | Ability Static Held item Light Ball Serious nature | Mega Punch Thunder Shock Mud-Slap Mega Kick | HP35Attack55Defense30Sp. Atk50Sp. Def40Speed90Total300 |
 | Nidoran-M Lv 16 Poison | Ability Poison Point Held item Poison Barb Sassy nature | Poison Fang Double Kick Thief Confusion | HP46Attack57Defense40Sp. Atk40Sp. Def40Speed50Total273 |
 | Wartortle Lv 17 Water | Ability Torrent Held item Sea Incense Bashful nature | Water Pulse Mega Punch Bite Withdraw | HP59Attack63Defense80Sp. Atk65Sp. Def80Speed58Total405 |
How to beat this team
Shared weaknesses. Ground hits 2 of 4, Psychic hits 2 of 4, Electric hits 1 of 4, Fire hits 1 of 4.
Level to be ready for. Lv 17 — Wartortle, the highest on the team.
Ground Pokémon you can have caught by this point. From this guide’s own encounter tables, by Boulder Badge — Mt. Moon and Cerulean City: