Some of Drifloon's Pokedex entries:
"It is whispered that any child who mistakes Drifloon for a balloon and holds on to it could wind up missing."
"It tugs on the hands of children to steal them away. However, it gets pulled around instead."
"These Pokémon are called the "Signpost for Wandering Spirits." Children holding them sometimes vanish."

Just as creepy as Hypno's entry in Fire Red. .. if not, creepier.