Where do Ghost pokemon come from?

[The Silent Paladin]

shiftishaper

Hmmm, that is a good point.

"A Pokémon formed by the spirits of people and Pokémon. It loves damp, humid seasons.
It tugs on the hands of children to steal them away. However, it gets pulled around instead."
Those are the entries from diamond and pearl.
I wonder if it deals with weather related deaths? Like if someone died in the rain? Or maybe lost children who are bound to wander?
But then why do they try to take children.

...Spirit of a child molester?