Where to Find Suicune

Generation 1

Red
Blue
Yellow

Generation 2

Gold

Roaming Johto (Only one)

Silver

Roaming Johto (Only one)

Crystal

Tin Tower (Only one)

Generation 3

Ruby
Sapphire
Emerald
Fire Red

Roaming Kanto (if the player chose Charmander) (Only one)

Leaf Green

Roaming Kanto (if the player chose Charmander) (Only one)

Generation 4

Diamond
Pearl
Platinum
Heart Gold

Route 25 (Only one)

Burned Tower

Soul Silver

Route 25 (Only one)

Burned Tower

Generation 5

Black
White
Black 2
White 2

Generation 6

X
Y
Omega Ruby

Trackless Forest (requires Ho-Oh or Lugia in the party) (Only one)

Alpha Sapphire

Trackless Forest (requires Ho-Oh or Lugia in the party) (Only one)

Generation 7

Sun
Moon
Ultra Sun

Ultra Space Wilds (Water World) (requires Raikou and Entei in party) (Only one)

Ultra Moon

Ultra Space Wilds (Water World) (requires Raikou and Entei in party) (Only one)

Let's Go Pikachu
Let's Go Eevee

Generation 8

Sword

Expansion Pass DLC:

Max Lair (Dynamax Adventure) (Only one)

Shield

Expansion Pass DLC:

Max Lair (Dynamax Adventure) (Only one)

Brilliant Diamond

Ramanas Park (requires Johto Slate) (Only one)

Shining Pearl
Legends Arceus

Generation 9

Scarlet

The Hidden Treasures of Area Zero DLC:

Casseroya Lake after receiving the Suicune Treat from Snacksworth (Only one) (Solo Quest)

Violet

The Hidden Treasures of Area Zero DLC:

Casseroya Lake after receiving the Suicune Treat from Snacksworth (Only one) (Solo Quest)

Suicune Evolution Tree