Part 1: Just started — heading for Brock

Old Rod

The fights at this checkpoint are PkMn Trainer Brendan, Falkner, Rival Blue (Squirtle), and 4 more.

★ PkMn Trainer Brendan — Viridian Forest

2 Pokémon · level cap Lv 8 (every cap) · PkMn Trainer Brendan’s own page

	Pokémon	Moves
	Corphish Lv 7 · Hyper Cutter Lax nature	Slash Crabhammer Crunch Swords Dance
	Treecko Lv 8 · Overgrow Mild nature	Screech Endeavor Quick Guard Energy Ball

★ Falkner — Pewter City Museum 2F

3 Pokémon · level cap Lv 14 (every cap) · Falkner’s own page

	Pokémon	Moves
	Rufflet Lv 12 · Frisk · Berry Juice Jolly nature	Aerial Ace Rock Tomb Rock Smash Roost
	Wattrel Lv 14 · Volt Absorb · Berry Juice Timid nature	Flash Air Slash Sleep Talk Roost
	Flittle Lv 14 · Speed Boost · Eviolite Bold nature	Disarm Cry Roost Psybeam Calm Mind

★ Rival Blue (Squirtle) — Pallet Town Oak's Lab

1 Pokémon · level cap Lv 5 (every cap) · Rival Blue (Squirtle)’s own page

	Pokémon	Moves
	Squirtle Lv 5 · Torrent Modest nature	Hydro Pump Rain Dance Iron Defense Skull Bash

Also fought around here

Everything you can have caught by this checkpoint · Open the interactive guide

This game's documentation doesn't say where 25 of its 678 fights happen, so those trainers are on no part of this walkthrough; they are all on the Trainers page. It also doesn't say when 7 of its areas open up, so they are listed together in the last part rather than guessed into the story.