Part 8: Beat Koga — Fuchsia City Gym, badge 5

Surf (HM03, Safari Zone — Secret House), the Good Rod (Fuchsia Good Rod House), the Super Rod (Route 12 — Super Rod House)

Beat Koga — Fuchsia City Gym, badge 5 opens 11 areas. There are 42 trainers standing in them. The fight at this checkpoint is Koga.

Where to go

1. Sea Route 19

   Wild: Magikarp 100% · Lv 5, Tentacool 100% · Lv 5-40, Goldeen 50% · Lv 10, Poliwag 50% · Lv 10 +2 more

2. Sea Route 20

   Wild: Magikarp 100% · Lv 5, Tentacool 100% · Lv 5-40, Goldeen 50% · Lv 10, Poliwag 50% · Lv 10 +2 more

3. Sea Route 21

   Wild: Magikarp 100% · Lv 5, Tentacool 100% · Lv 5-40, Pidgey 55% · Lv 11-17, Goldeen 50% · Lv 10 +6 more

4. Kanto Power Plant

   Wild: Magnemite 40% · Lv 30-35, Magneton 20% · Lv 33-38, Voltorb 20% · Lv 33-37, Grimer 15% · Lv 33-37 +3 more

5. Seafoam Islands

   Wild: Magikarp 100% · Lv 5, Tentacool 70% · Lv 20-40, Goldeen 50% · Lv 10, Poliwag 50% · Lv 10 +10 more

6. Pokémon Mansion

   Wild: Grimer 40% · Lv 35-38, Raticate 40% · Lv 37-46, Rattata 30% · Lv 34-37, Growlithe 20% · Lv 26-38 +2 more

   Trainers: Burglar Lv 34, Burglar #2 Lv 38, Burglar #3 Lv 34, Scientist Lv 29, Scientist #2 Lv 33, Scientist #3 Lv 34

   Pick up: TM14 Blizzard, TM22 Solar Beam

7. Cinnabar Island

   Wild: Magikarp 100% · Lv 5, Staryu 60% · Lv 10-15, Goldeen 50% · Lv 10, Poliwag 50% · Lv 10 +5 more

   Pick up: TM38 Fire Blast

8. Route 19

   Trainers: Beauty Lv 27, Beauty #2 Lv 30, Beauty #3 Lv 29, Swimmer Lv 30, Swimmer #2 Lv 29, Swimmer #3 Lv 30 +4 more

9. Route 20

   Trainers: Beauty Lv 35, Beauty #2 Lv 30, Beauty #3 Lv 31, Beauty #4 Lv 30, Bird Keeper Lv 30, Jr Trainer F Lv 31 +4 more

10. Route 21

    Trainers: Cue Ball Lv 31, Fisher Lv 28, Fisher #2 Lv 31, Fisher #3 Lv 27, Fisher #4 Lv 33, Swimmer Lv 33 +3 more

11. Fuchsia City Gym

    Trainers: ★ Koga Lv 50, Juggler Lv 31, Juggler #2 Lv 34, Juggler #3 Lv 38, Juggler #4 Lv 34, Tamer Lv 34 +1 more

★ Koga — Fuchsia City Gym

4 Pokémon · level cap Lv 50 (every cap) · Koga’s own page

	Pokémon	Ability & item	Moves	Base stats
	Venonat Lv 44 BugPoison		Stun Spore Psybeam Sleep Powder Psychic	HP60Attack55Defense50Sp. Atk40Sp. Def55Speed45Total305
	Venonat Lv 46 BugPoison		Stun Spore Psybeam Sleep Powder Psychic	HP60Attack55Defense50Sp. Atk40Sp. Def55Speed45Total305
	Venonat Lv 48 BugPoison		Stun Spore Psybeam Sleep Powder Psychic	HP60Attack55Defense50Sp. Atk40Sp. Def55Speed45Total305
	Venomoth Lv 50 BugPoison		Stun Spore Psybeam Sleep Powder Psychic	HP70Attack65Defense60Sp. Atk90Sp. Def75Speed90Total450

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

This game's documentation doesn't say where 4 of its 343 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 Kanto Underground Path opens up, so it is in no part above; it has its own route page.