36level cap
Duane (party 3: after reaching Rugosa City) fields 6 Pokémon between level 33 and level 36 in Hepatica Gym.
This is around Hepatica Town — Duane and the Skull Badge in the story — that page lists everything you can have caught by this point.
Types on this team: Dark ×4Poison ×2FireFlyingGhostIce
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Nyanell Lv 33 Dark | Held item X Attack | Faint Attack Heal Bell U-Turn Swagger | HP60Attack90Defense60Sp. Atk65Sp. Def55Speed110Total440 |
 | Murkrow Lv 33 DarkFlying | Held item Sharp Beak | Faint Attack Pursuit Wing Attack Swagger | HP60Attack85Defense42Sp. Atk85Sp. Def42Speed91Total405 |
 | Gengar Lv 34 GhostPoison | Held item Miracleberry | Shadow Ball Will-O-Wisp Mean Look Swagger | HP60Attack65Defense60Sp. Atk130Sp. Def75Speed110Total500 |
 | Muk Lv 34 Poison | Held item Black Sludge | Sludge Bomb Crunch Minimize Swagger | HP105Attack105Defense75Sp. Atk65Sp. Def100Speed50Total500 |
 | Snowmad Lv 34 IceDark | Held item Nevermeltice | Aurora Beam Faint Attack Agility Swagger | HP65Attack105Defense95Sp. Atk95Sp. Def70Speed105Total535 |
 | Houndoom Lv 36 DarkFire | Held item Charcoal | Flame Wheel Faint Attack Roar Swagger | HP75Attack90Defense50Sp. Atk110Sp. Def80Speed95Total500 |
How to beat this team
Shared weaknesses. Fairy hits 3 of 6, Fighting hits 3 of 6, Ground hits 3 of 6, Rock hits 3 of 6.
Level to be ready for. Lv 36 — Houndoom, the highest on the team.
Fairy Pokémon you can have caught by this point. From this guide’s own encounter tables, by Hepatica Town — Duane and the Skull Badge: