DEX -

Celadon City in HeartGold

Celadon City Location Entry | HeartGold Game Entry

This location contains the following Pokemon:

Surfing

Pokemon	Levels	Chance
Grimer	15-20	90%
Muk	15	10%

Through other methods

Pokemon	Levels	Chance
Mr. Mime	15	Game Corner for 3333 coins
Eevee	15	Game Corner for 6666 coins
Porygon	20	Game Corner for 9999 coins