How to find Gastly in Pokemon Fire Red and Leaf Green - YouTube
Where to find Gastly in Pokemon Fire Red - YouTube
3] Shiny gastly in leaf green after 640 RE, haunter and gengar's shiny are so underwhelming i don't think i want to evolve him : r/ShinyPokemon, gengar shiny fire red - thirstymag.com
Live Shiny Gastly After 13,970 REs! (Pokemon FireRed) , gengar shiny fire red - thirstymag.com