Flip a coin. If heads, choose a basic Energy card attached to 1 of your opponent's Pokémon and attach it to another of your opponent's Pokémon of your choice.
Choose 1 of your opponent's Pokémon. This attack does 30 damage to that Pokémon. Don't apply Weakness and Resistance for this attack. (Any other effects that would happen after applying Weakness and Resistance still happen.)
A scientist created this Pokémon after years of horrific gene-splicing and DNA engineering experiments.
In Japan, this card was released with artwork by Ken Sugimori as part of a special expansion sheet available at the 7th Next Generation World Hobby Fair, held in December 1997. It was later reprinted as one of a selection of cards included in the Pokémon Song Best Collection CD, released on January 1, 1999. The English version of this card was released through Nintendo Power Magazine in April 2000, with Magic: The Gathering illustrator Christopher Rush providing new artwork. The English print was also released in Japan as a promotional card, awarded to passengers for completing the silver course of the JR Pokémon Stamp Rally in August 2000. It was later reprinted in the Legendary Collection, which was only released outside of Japan.
The artwork change between the English and Japanese prints may have arisen due to the similarity of the Japanese artwork of this card to that of the first promo Mewtwo, as both are modified from Sugimori's Generation I stock art.
As the Japanese version of this card was originally distributed as part of an expansion sheet, it, along with Pikachu and Mew, are often regarded as unofficial additions to the Vending Machine cards collection, dubbed "Series 00".