Cerulean CaveFireRed&LeafGreen

"Post-game dungeon locked behind the Elite Four. Mewtwo is waiting at the bottom, and the wild Pokemon here are the highest-level encounters in Kanto."

21PokemonLv5-70Levels1Specials6Items

CERULEAN CAVE MAP

Three floors connected by ladders and water. B1F is mostly submerged and requires Surf to navigate. The layout gets more confusing the deeper you go.

Type Coverage
Water-Heavy AreaBring Electric or Grass type
WATER9PSYCHIC3ROCK2ELECTRIC2FIGHTING2BUG1
Only Found Here· 2
Kadabra
Mewtwo
Nuzlocke Picks· 21
S
Gyarados
A
Parasect
A
Slowbro
A
Magneton
B
Primeape
B
Electrode
C
Golbat
C
Psyduck
C
Golduck
C
Poliwag
C
Poliwhirl
C
Kadabra
C
Machoke
C
Geodude
C
Graveler
C
Slowpoke
C
Magikarp
D
Goldeen
D
Ditto
D
Mewtwo
D
Wobbuffet

Pokemon Encounters

Mewtwo at level 70 is the deepest encounter. Ditto roams all three floors at 11-25% and is worth catching for breeding on Four Island. Wobbuffet is the true rarity at 1%.

Method
Floor
Type
✦Special encounters1
#150Mewtwo
Legendary Lv 70
▾1F23
Walking8
#047Parasect
25% - Lv 49–58
#082Magneton
20% - Lv 49
#042Golbat
14% - Lv 46–55
#132Ditto
11% - Lv 52–61
#057Primeape
11% - Lv 52–61
#067Machoke
10% - Lv 46
#101Electrode
5% - Lv 58
#202Wobbuffet
4% - Lv 55
Surf4
#054Psyduck
65% - Lv 30–50
FR
#079Slowpoke
65% - Lv 30–50
LG
#055Golduck
35% - Lv 40–55
FR
#080Slowbro
35% - Lv 40–55
LG
Fish9
Old Rod1
#129Magikarp
100% - Lv 5
Good Rod3
#060Poliwag
60% - Lv 5–15
#118Goldeen
20% - Lv 5–15
#129Magikarp
20% - Lv 5–15
Super Rod5
#060Poliwag
40% - Lv 15–25
#061Poliwhirl
40% - Lv 20–30
#130Gyarados
15% - Lv 15–25
#054Psyduck
5% - Lv 15–35
FR
#079Slowpoke
5% - Lv 15–35
LG
Rock Smash2
#074Geodude
65% - Lv 30–50
#075Graveler
35% - Lv 40–55
▾2F10
Walking8
#042Golbat
25% - Lv 49–58
#067Machoke
20% - Lv 49
#047Parasect
14% - Lv 52–61
#132Ditto
11% - Lv 55–64
#064Kadabra
11% - Lv 55–64
#082Magneton
10% - Lv 52
#202Wobbuffet
5% - Lv 58
#101Electrode
4% - Lv 61
Rock Smash2
#074Geodude
65% - Lv 35–55
#075Graveler
35% - Lv 45–60
▾B1F23
Walking8
#132Ditto
25% - Lv 58–67
#064Kadabra
25% - Lv 58–67
#047Parasect
14% - Lv 55–64
#042Golbat
11% - Lv 52–61
#067Machoke
10% - Lv 52
#082Magneton
10% - Lv 55
#101Electrode
4% - Lv 64
#202Wobbuffet
1% - Lv 61
Surf4
#054Psyduck
65% - Lv 40–60
FR
#079Slowpoke
65% - Lv 40–60
LG
#055Golduck
35% - Lv 50–65
FR
#080Slowbro
35% - Lv 50–65
LG
Fish9
Old Rod1
#129Magikarp
100% - Lv 5
Good Rod3
#060Poliwag
60% - Lv 5–15
#118Goldeen
20% - Lv 5–15
#129Magikarp
20% - Lv 5–15
Super Rod5
#060Poliwag
40% - Lv 15–25
#061Poliwhirl
40% - Lv 20–30
#130Gyarados
16% - Lv 15–35
#054Psyduck
4% - Lv 15–25
FR
#079Slowpoke
4% - Lv 15–25
LG
Rock Smash2
#074Geodude
65% - Lv 40–60
#075Graveler
35% - Lv 50–65
Legendary
Mewtwo
#150

Mewtwo

Psychic
Level
70
EV yield
3 Sp. Atk
Acquisition
Legendary
How to get itB1F
Static encounter deep inside Cerulean Cave after defeating the Elite Four
at B1F
Sealed locationB1FCerulean CaveView on map
One-of-a-kind. You only get a single shot per cartridge — knock it out or run, and it is gone for the run. Save before engaging.
Mewtwo page →