Walkthrough
Just beyond Mt. Moon and the eastern section of Route 4 is Cerulean City, the place where the next Pokemon Gym can be found. The first Alolan Trade can also be found in Cerulean City, as well as a Move Tutor that will teach your Starter Partner Pokemon a special move. The Cerulean City Gym requires you to have a Pokemon in your Party that is at Level 15 or higher in order for you to challenge it, which is why it is recommended to first head north of Cerulean City on Route 24 to gain some extra Experience. After defeating the Pokemon Gym, you will need to defeat a Team Rocket Grunt causing trouble in the city before proceeding onward.
Zippy Zap: Tamer In Pokemon Center
Gift Pokemon
Bulbasaur: Show Pokemon Caregiver That You've Caught 30 Pokemon
Alolan Trade
Alolan Rattata: Trainer Requests Kantoian Rattata In Return
Trainers
Team Rocket Grunt: Level 15 Raticate
Obtainable Items
Rare Candy: Within Far Northeast House's Back Garden
Heart Scales: Talk To Bike Shop Owner About Bikes
TM29: Defeat Cerulean City Gym Leader Misty
TM10: Defeat Team Rocket Grunt
TM60: Defeat Coach Trainer Harjit
Escape Rope: From Rival After Capturing Mewtwo
PokeMart Items (Through Storyline Progression)
Poke Ball, Great Ball, Ultra Ball
Potion, Super Potion, Hyper Potion, Max Potion, Full Restore
Antidote, Burn Heal, Ice Heal, Awakening, Paralyze Heal, Full Heal, Revive
Escape Rope, Repel, Super Repel, Max Repel
Lure, Super Lure, Max Lure
X Attack, X Defense, X Sp. Atk, X Sp. Def, X Speed, X Accuracy, Dire Hit, Guard Spec.
Post Game
Walkthrough
After defeating the Elite Four and starting the Master Trainers Challenge, you will find a number of Master Trainers within Cerulean City. In total, there are six Master Trainers for you to defeat. You can also challenge Coach Trainer Harjit in Cerulean City during the Post Game.
Trainers
Youngster Denis (Master Trainer): Level 75 Raticate
Lass Kimberly (Master Trainer): Level 70 Poliwhirl
Black Belt Yuen (Master Trainer): Level 75 Poliwrath
Bird Keeper Barney (Master Trainer): Level 70 Doduo
Psychic Avery (Master Trainer): Level 75 Jynx
Ace Trainer Grayson (Master Trainer): Level 75 Dragonite
Coach Trainer Harjit: Level 52 Rhydon, Level 52 Rapidash, Level 52 Dewgong, Level 52 Seaking, Level 52 Nidoking