Walkthrough
After defeating the Main Story and obtaining the National Pokedex from Professor Oak, you will earn access to Cerulean Cave just north of Cerulean City. This cave is full of many different Wild Pokemon Species, but the main attraction to it is that it's home to a very special Legendary Pokemon!
Wild Pokemon
1st Floor - Walking:
Parasect (25%): Levels 49-58
Magneton (20%): Level 49
Golbat (14%): Levels 46-55
Primeape (11%): Levels 52-61
Ditto (11%): Levels 52-61
Machoke (10%): Level 46
Electrode (5%): Level 58
Wobbuffet (4%): Level 55
1st Floor - Surfing:
Psyduck(FireRed)/Slowpoke(LeafGreen) (65%): Levels 30-50
Golduck(FireRed)/Slowbro(LeafGreen) (35%): Levels 40-55
1st Floor - Old Rod:
Magikarp (100%): Level 5
1st Floor - Good Rod:
Poliwag (60%): Levels 5-15
Goldeen (20%): Levels 5-15
Magikarp (20%): Levels 5-15
1st Floor - Super Rod:
Poliwag (40%): Levels 15-25
Poliwhirl (40%): Levels 20-30
Gyarados (15%): Levels 15-25
Psyduck(FireRed)/Slowpoke(LeafGreen) (5%): Levels 15-35
1st Floor - Rock Smash:
Geodude (65%): Levels 30-50
Graveler (35%): Levels 40-55
2nd Floor - Walking:
Golbat (25%): Levels 49-58
Machoke (20%): Level 49
Parasect (14%): Levels 52-61
Kadabra (11%): Levels 55-64
Ditto (11%): Levels 55-64
Magneton (10%): Level 52
Wobbuffet (5%): Level 58
Electrode (4%): Level 61
2nd Floor - Rock Smash:
Geodude (65%): Levels 30-50
Graveler (35%): Levels 40-55
Basement Floor 1 - Walking:
Kadabra (25%): Levels 58-67
Ditto (25%): Levels 58-67
Parasect (14%): Levels 55-64
Golbat (11%): Levels 52-61
Machoke (10%): Level 52
Magneton (10%): Level 55
Electrode (4%): Level 64
Wobbuffet (1%): Level 61
Basement Floor 1 - Surfing:
Psyduck(FireRed)/Slowpoke(LeafGreen) (65%): Levels 30-50
Golduck(FireRed)/Slowbro(LeafGreen) (35%): Levels 40-55
Basement Floor 1- Old Rod:
Magikarp (100%): Level 5
Basement Floor 1 - Good Rod:
Poliwag (60%): Levels 5-15
Goldeen (20%): Levels 5-15
Magikarp (20%): Levels 5-15
Basement Floor 1 - Super Rod:
Poliwag (40%): Levels 15-25
Poliwhirl (40%): Levels 20-30
Gyarados (15%): Levels 15-25
Psyduck(FireRed)/Slowpoke(LeafGreen) (5%): Levels 15-35
Basement Floor 1 - Rock Smash:
Geodude (65%): Levels 30-50
Graveler (35%): Levels 40-55
Items
1st Floor:
Full Restore: On Ground
Max Elixir: On Ground
Nuggett: On Ground
Ultra Ball: ItemFinder
2nd Floor:
Full Restore: On Ground
PP Up: On Ground
Ultra Ball: On Ground
Basement Floor 1:
Max Revive: On Ground
Ultra Ball: On Ground