Joyous Tower holds Bulbasaur, Chikorita, Treeko, Cyndaquil, Torchic, Psyduck, Eevee, and Skitty
Waterfall Pond holds Squirtle, Totodile, and Mudkip
Lightning Field holds Pikachu
Fiery Field holds Charmander
Southern Cavern holds Cubone
Machop is in Buried Relic and Wish Cave
Meowth is in Western Cave