Munna

“Munna always float in the air. People whose dreams are eaten by them forget what the dreams had been about.”

— Pokémon Black

“It eats the dreams of people and Pokémon. When it eats a pleasant dream, it expels pink-colored mist.”

— Pokémon White

“This Pokémon appears before people and Pokémon who are having nightmares and eats those dreams.”

— Pokémon Black 2