22level cap
Rival Silver fields 4 Pokémon between level 18 and level 22 in Burned Tower.
Fought at Burned Tower.
This is around Beat Whitney — Goldenrod City Gym, badge 3 in the story — that page lists everything you can have caught by this point.
Types on this team: Poison ×2ElectricFlyingGhostGrassSteel
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Gastly Lv 20 GhostPoison | Ability Levitate | Lick Confuse Ray Mean Look Curse | HP30Attack35Defense30Sp. Atk100Sp. Def35Speed80Total310 |
 | Magnemite Lv 18 ElectricSteel | Ability Magnet Pull | Thunder Wave Thunder Shock Supersonic Sonic Boom | HP25Attack35Defense70Sp. Atk95Sp. Def55Speed45Total325 |
 | Zubat Lv 20 PoisonFlying | Ability Inner Focus | Astonish Supersonic Bite Wing Attack | HP40Attack45Defense35Sp. Atk30Sp. Def40Speed55Total245 |
 | Bayleef Lv 22 Grass | Ability Overgrow | Synthesis Reflect Magical Leaf Poison Powder | HP60Attack62Defense80Sp. Atk63Sp. Def80Speed60Total405 |
How to beat this team
Shared weaknesses. Fire hits 2 of 4, Ground hits 2 of 4, Ice hits 2 of 4, Psychic hits 2 of 4.
Level to be ready for. Lv 22 — Bayleef, the highest on the team.
Fire Pokémon you can have caught by this point. From this guide’s own encounter tables, by Beat Whitney — Goldenrod City Gym, badge 3: