Walkthrough
Connected to Route 24 is none other than Route 25. On top of being able to find loads of Wild Pokemon here, there will also be a maze full of trainers looking to battle. At the end of Route 25 is Bill's House, the creator of the Pokemon Storage System. He has turned himself into a Pokemon, and he needs your help turning himself back to normal. By doing so, he will give you a pair of tickets to board the S.S. Anne.
Wild Pokemon
Grasses:
Pidgey (20%): Levels 9-14
Venonant (20%): Levels 9-14
Meowth (20%): Levels 9-14
Psyduck (20%): Levels 9-14
Bellsprout (20%): Levels 9-14
Grasses - Special Spawns:
Squirtle: Levels 9-14
Waters:
Poliwag (45%): Levels 9-14
Magikarp (45%): Levels 9-14
Poliwhirl (10%): Levels 9-14
Sky:
Pidgey (60%): Levels 3-56
Pidgeotto (35%): Levels 3-56
Pidgeot (5%): Levels 3-56
Sky - Special Spawns:
Dragonite: Levels 3-56
Charizard: Levels 3-56
Articuno: Levels 3-56
Zapdos: Levels 3-56
Moltres: Levels 3-56
Trainers
Hiker Franklin: Level 14 Onix
Youngster Chad: Level 12 Diglett
Bird Keeper Joey: Level 15 Pidgeotto
Youngster Dan: Level 12 Ekans, Level 12 Rattata
Hiker Nob: Level 14 Geodude, Level 14 Machop
Picnicker Kelsey: Level 13 Goldeen
Camper Dustin: Level 13 Squirtle
Lass Haley: Level 12 Oddish, Level 12 Pidgey
Fisherman Wayne: Level 14 Magikarp, Level 14 Krabby
Coach Trainer Amala: Level 16 Machop
Obtainable Items
Poke Balls: Defeat Hiker Franklin
Poke Balls: Defeat Youngster Chad
Super Potion: Near Youngster Chad
Poke Balls: Defeat Bird Keeper Joey
Poke Balls: Defeat Youngster Dan
Poke Balls: Defeat Hiker Nob
Great Balls: Defeat Picnicker Kelsey
Great Balls: Defeat Camper Dustin
Ether: Near Lass Haley
Poke Balls: Defeat Lass Haley
Poke Balls: Defeat Fisherman Wayne
Lure: Near Coach Trainer Amala
TM15: Defeat Coach Trainer Amala
TM16: Behind Chop Down Tree Near End Of Route
S.S. Tickets: From Bill After Turning Him Back To Normal
Post Game
Walkthrough
After defeating the Elite Four and starting the Master Trainers Challenge, you will find just one Master Trainer on Route 25 that you must defeat.
Trainers
Psychic Harrison (Master Trainer): Level 75 Starmie