Gastly

Description
Its sleek body is made from gas, and can be blown away by the wind. Even though the Pokemon doesn't have any substance except gas, it can envelop an opponent of any size and cause one to choke. Gastly can also cause hallucinations and is a menacing prankster.

Evolution
--Lv 25--> --Trade-->

Location

 * Lavender Town: Cutscene
 * Poke Tower 1
 * Poke Tower 2: Boss (Uncatchable) / Cutscene
 * Route 12: Cutscene
 * Saffron City:Boss (Uncatchable)/ Cutscene

Shiny

 * Shiny Gastly has a 0.0125% chance of appearing in the wild
 * Pokemon Adoption: 1 SnD Coin (Common Shiny Pokemon)