50level cap
Broompio fields 6 Pokémon between level 48 and level 50 in Pacifidlog Town Gym. The fight is mandatory.
This is around Beat Jack — Rustboro City Gym, badge 5 in the story — that page lists everything you can have caught by this point.
| Pokémon | Ability & item | Moves | |
|---|---|---|---|
 | Tentacruel Lv 48 | Ability Liquid Ooze Held item Leftovers Male · Impish nature · EVs 248 HP / 8 Atk / 248 Def / 4 Spe | Toxic Spikes Flip Turn Payback Poison Jab |
 | Malamar Lv 48 | Ability Contrary Held item Leftovers Male · Careful nature · EVs 248 HP / 8 Def / 252 SpD | Superpower Knock Off Rest Sleep Talk |
 | Jellicent Lv 49 | Ability Water Absorb Held item Leftovers Female · Relaxed nature · IVs 0 Atk / 0 Spe · EVs 252 HP / 248 Def / 8 SpD | Recover Scald Hex Trick Room |
 | Octillery Lv 49 | Ability Sniper Held item Scope Lens Female · Modest nature · IVs 0 Atk · EVs 248 HP / 248 SpA / 12 SpD | Focus Energy Hydro Pump Energy Ball Ice Beam |
 | Grapploct Lv 49 | Ability Limber Held item Leftovers Male · Careful nature · EVs 252 HP / 4 Atk / 252 SpD | Octolock Skitter Smack Bulk Up Drain Punch |
 | Chandelure Lv 50 | Ability Infiltrator Held item Room Service Female · Modest nature · IVs 0 Atk · EVs 252 HP / 252 SpA / 4 SpD | Fire Blast Shadow Ball Energy Ball Trick Room |
Base stats are not published for this guide.