Drowzee

Red / Blue: Puts enemies to sleep then eats their dreams. Occasionally gets sick from eating bad dreams.

Yellow: If you sleep by it all the time, it will sometimes show you dreams it has eaten in the past.

Gold: If you think that you had a good dream, but you can't remember it, a DROWZEE has probably eaten it.

Silver: It remembers every dream it eats. It rarely eats the dreams of adults because children's are much tastier.

Crystal: When it twitches its nose, it can tell where someone is sleeping and what that person is dreaming about.

Ruby / Sapphire: If your nose becomes itchy while you are sleeping, it’s a sure sign that one of these POKéMON is standing above your pillow and trying to eat your dream through your nostrils.

Emerald: If your nose becomes itchy while you are sleeping, it’s a sure sign that a DROWZEE is standing above your pillow and trying to eat your dream through your nostrils.

FireRed: A descendent of the legendary animal baku, which is said to eat dreams. It is skilled at hypnotism.

LeafGreen / X: Puts enemies to sleep, then eats their dreams. Occasionally gets sick from eating only bad dreams.

Diamond +6: It can tell what people are dreaming by sniffing with its big nose. It loves fun dreams.

HeartGold: If you think that you had a good dream but you can’t remember it, a DROWZEE has probably eaten it.

SoulSilver: It remembers every dream it eats. It rarely eats the dreams of adults because children’s are much tastier.

Y: If you think that you had a good dream but you can’t remember it, a Drowzee has probably eaten it.

Omega Ruby / Alpha Sapphire: If your nose becomes itchy while you are sleeping, it’s a sure sign that one of these Pokémon is standing above your pillow and trying to eat your dream through your nostrils.

Sun: A Pokémon that nourishes itself by eating dreams, it is thought to share common ancestry with Munna and Musharna.

Moon: It finds really fun dreams tasty. When it makes friends with people, it may show them the most delicious dreams it’s ever eaten.

Ultra Sun: It can be spotted near recreational facilities, intending to eat the pleasant dreams of children who enjoyed themselves there that day.

Ultra Moon: It puts its prey to sleep and devours their dreams. It seems that bad dreams taste sour, so Drowzee doesn’t particularly like eating them.

Let's Go Pikachu / Let's Go Eevee: If you sleep by it all the time, it will sometimes show you dreams it had eaten in the past.