Talk:Gengar and Clefable/@comment-2600:1016:B01B:2DD5:A4BA:1621:A8DE:121-20181209201835

Some more evidence, Gengar’s Red and Blue Pokédex entry: “Under a full moon, this Pokémon likes to mimic the shadows of people and laugh at their fright.” the full moon is an obvious connection to Clefable whose origin is very connected to the moon.