19level cap
This fight happens in Tier 2 of 8 — fought with 1 badge already (level cap 19) only.
Viola fields 4 Pokémon between level 16 and level 19 in Rustboro City Gym.
This is around 1 badge in the story — that page lists everything you can have caught by this point.
Types on this team: Bug ×4FlyingGroundWater
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Surskit Lv 16 BugWater | Ability Swift Swim | Bubble Quick Attack Bug Bite Sticky Web | HP40Attack30Defense32Sp. Atk50Sp. Def52Speed65Total269 |
 | Volbeat Lv 17 Bug | Ability Swarm | Bug Bite Confuse Ray Double Team Quick Attack | HP65Attack73Defense75Sp. Atk47Sp. Def85Speed85Total430 |
 | Nincada Lv 16 BugGround | Ability Compound Eyes | Metal Claw Feint Attack Bug Bite Mud-Slap | HP31Attack45Defense90Sp. Atk30Sp. Def30Speed40Total266 |
 | Beautifly Lv 19 BugFlying | Ability Swarm Held item Oran Berry | Absorb Gust Bug Bite Whirlwind | HP60Attack70Defense50Sp. Atk100Sp. Def50Speed65Total395 |
How to beat this team
Shared weaknesses. Flying hits 4 of 4, Fire hits 3 of 4, Rock hits 3 of 4, Electric hits 2 of 4.
Level to be ready for. Lv 19 — Beautifly, the highest on the team.
Flying Pokémon you can have caught by this point. From this guide’s own encounter tables, by 1 badge: