31level cap
Rival Wally fields 5 Pokémon between level 29 and level 31 in Mauville City.
This is around Badge 2 — Dewford Town Gym (Leader Cmt) in the story — that page lists everything you can have caught by this point.
Types on this team: DragonElectricFairyFlyingGrassNormalPoisonPsychicSteel
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Delcatty Lv 31 Normal | Ability Cute Charm | Fake Out Attract Covet Sucker Punch | HP70Attack65Defense65Sp. Atk55Sp. Def55Speed90Total400 |
 | Altaria Lv 29 DragonFlying | Ability Natural Cure | Dragon Breath Cotton Guard Pluck Disarming Voice | HP75Attack70Defense90Sp. Atk70Sp. Def105Speed80Total490 |
 | Magneton Lv 29 ElectricSteel | Ability Sturdy | Shock Wave Tri Attack Thunder Wave | HP50Attack60Defense95Sp. Atk120Sp. Def70Speed70Total465 |
 | Gardevoir Lv 29 PsychicFairy | Ability Synchronize | Psybeam Draining Kiss Hypnosis | HP68Attack65Defense65Sp. Atk125Sp. Def115Speed80Total518 |
 | Roselia Lv 31 GrassPoison | Ability Poison Point | Magical Leaf Leech Seed Toxic | HP50Attack60Defense45Sp. Atk100Sp. Def80Speed65Total400 |
How to beat this team
Shared weaknesses. Fighting hits 2 of 5, Fire hits 2 of 5, Ice hits 2 of 5, Dragon hits 1 of 5.
Level to be ready for. Lv 31 — Delcatty, the highest on the team.
Fighting Pokémon you can have caught by this point. From this guide’s own encounter tables, by Badge 2 — Dewford Town Gym (Leader Cmt):