Jigglypuff (anime)/Games/Core series

In, there is a Jigglypuff at the Pokémon Center. If it is interacted with, it will sing its song, which will put Pikachu to sleep if it does not already have a status condition. Pikachu will remain where it is standing until the player leaves the center, talks to it or uses the Poké Flute while standing next to it. Nurse Joy will note the sleeping Pikachu if she is spoken to, and will not heal the player's party until Pikachu is awoken. Also, if the lady of the Cable Club is spoken to, she'll say "We're making preparations. Please wait." until Pikachu is awoken. If the player tries to deposit Pikachu in the PC or select Pikachu in the party, the game will state there is "No response". If the player looks at Pikachu in the party, its sprite will be missing. Jigglypuff is also present at the Pewter Pokémon Center in the other Generation I games, the Generation II games, and their. In Generation I and FireRed and LeafGreen, while it sings just like in Yellow, its song has no effect, likely due to all six of the player's Pokémon being in Poké Balls. In Generation II and HeartGold and SoulSilver, it does not sing.