Jigglypuff

“When its huge eyes light up, it sings a mysteriously soothing melody that lulls its enemies to sleep.”

— Pokémon Red

“Uses its alluring eyes to enrapture its foe. It then sings a pleasing melody that lulls the foe to sleep.”

— Pokémon Yellow

“If it inflates to SING a lullaby, it can perform longer and cause sure drowsiness in its audience.”

— Pokémon Gold