Porygon is a Pokémon made completely out of programming code. It has a pink polyhedral body with a blue stomach, blue triangular prism feet, and a blue rectangular prism tail. It has a pink, polyhedral head that ends in a blue beak and has hexagonal eyes. Built into this code is Silph Co. copyright protection preventing duplication through electronic means. Due to its man-made origins, Porygon does not need to breathe or eat, though it can still accept food if given.
Porygon has two signature moves at its disposal. It can change type into one of its own moves* with Conversion or to resist the last move that hit it with Conversion 2. It is also capable of changing its appearance using Sharpen, which is a former signature move. Because it is man-made, it is generally found in computers or in labs and other buildings where people work.
Porygon is the only Pokémon that can be evolved twice while still at level 1, as it evolves into Porygon2 by trading while holding an Up-Grade which in turn evolves into Porygon-Z by trading while holding a Dubious Disc.