Gastly is a dual-type Ghost/Poison Pokémon introduced in Generation I. This creature produces a faint, sweet smell. The toxic gas surrounding the main body can induce fainting and suffocation, and it is capable of enshrouding an enemy of any size. Gastly's gaseous form makes it one of the lightest Pokémon in existence. Gastly has a playful personality, often frightening and playing pranks on people for fun. That's what it is doing in our fanart Pokemon Gastly Shows Tongue Sticker.