Porygon is the first known artificial Pokémon that was ever created. It was created by Pokémon Lab according to a Pokémon Report found in Silph Co. In addition, its presence as a prize pokémon in the then-Team Rocket owned Celadon Game Corner as well as Team Rocket's earlier control over Silph Co. suggests that Team Rocket was involved in its creation.

Porygon has a pink polyhedral body with a blue stomach, blue triangular prism feet, and a blue rectangular prism tail. Porygon has a pink, polyhedral head that ends in a blue beak and has hexagonal eyes. Porygon is made completely out of programming code. Built into this code is a Silph copyright protection preventing duplication through electronic means.