When its huge eyes light up, it sings a mysteriously soothing melody that lulls its enemies to sleep.
In Japan, this card, along with a Pikachu card, was first available as an insert with the November 1996 issue of CoroCoro Comic, released on October 15, 1996. It was later included as an insert with Easily Understand How to Play Pokémon Card (Asobikata Volume 1), released in November 1996. The prints are very similar to each other, with the CoroCoro version printed on glossy stock, and the Asobikata version printed on regular stock. An English version on regular Japanese card stock was available as an insert with the April 1999 issue of Bessatsu CoroCoro Comic, released in March 1999. This print features a gray star symbol with a yellow "PROMO" superimposed on it, similar to the black star promotional cards released outside Japan. The Japanese gray star symbol is also comparatively smaller than that of the black star symbol. The card was first released in English as part of a Pokémon the First Movie soundtrack promotion. A proof of purchase from the soundtrack had to be mailed in to receive the card.
The Japanese print released in CoroCoro, along with Pikachu, were the first Pokémon TCG cards released, available 5 days before the release of Expansion Pack on October 20, 1996.