20highest level
Teacher Mason fields 5 Pokémon at level 20 in Past Route 10 Schoolhouse.
This is around The sea routes, the Argent Depths and the S.S. Mako in the story — that page lists everything you can have caught by this point.
Types on this team: Normal ×2ElectricFairyFireFlyingPsychic
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Meowth Lv 20 Normal | Charm Flail Screech U-Turn | HP40Attack45Defense35Sp. Atk40Sp. Def40Speed90Total290 | |
 | Growlithe Lv 20 Fire | Flame Wheel Quick Attack Will-O-Wisp Bite | HP55Attack70Defense45Sp. Atk70Sp. Def50Speed60Total350 | |
 | Natu Lv 20 PsychicFlying | Confusion Recover Future Sight Destiny Bond | HP40Attack50Defense45Sp. Atk70Sp. Def45Speed70Total320 | |
 | Pikachu Lv 20 Electric | Bide Reversal Thunderpunch Encore | HP35Attack55Defense40Sp. Atk50Sp. Def50Speed90Total320 | |
 | Wigglytuff Lv 20 NormalFairy | Drain Kiss Pain Split Disable Brick Break | HP140Attack70Defense45Sp. Atk85Sp. Def50Speed45Total435 |
How to beat this team
Shared weaknesses. Ground hits 2 of 5, Rock hits 2 of 5, Dark hits 1 of 5, Electric hits 1 of 5.
Level to be ready for. Lv 20 — Meowth, the highest on the team.
Ground Pokémon you can have caught by this point. From this guide’s own encounter tables, by The sea routes, the Argent Depths and the S.S. Mako: