Gastly, a classic Pokemon.
One of the most well-known Ghost, Poison Pokemon types.
Here's everything you need to know to get a Shiny Gastly as well as how to evolve it.
Shiny Gastly Guide
Where To Find Shiny Gastly
Shiny Gastly can be found in the wild, fog and cloudy conditions will boost its spawn chance.
They can be found in Research Encounters and Raids too.
How To Evolve Shiny Gastly To Shiny Haunter
Shiny Gastly is okay but you'll likely want an upgrade.
Evolving Gastly will create Haunter.
It takes 25 Candy to do so.
If you have enough select it and your Pokemon should change.
How To Evolve Shiny Haunter To Shiny Gengar
Next, let's turn Shiny Haunter into Shiny Gengar!
You'll need 100 Candy, select evolve and you'll have a Shiny Gengar.