I haven't seen any Porygon or it's evolution forms in the anime
Porygon made its first and only major anime appearance in EP038. This episode caused almost 700 children in Japan to have seizures due to a flashing strobe effect, and was therefore banned and never aired again anywhere in the world. Since then, Porygon and its evolutions have never played a main role in another episode, despite the fact that it was actually Pikachu who caused the strobe effect which gave children seizures. Although it did not appear, a Trainer was attempting to send out their Porygon to fight the Diglett and Dugtrio in Dig Those Diglett!. This was only present in the dub. A Porygon made its dub debut in a brief appearance during a graphic display in A Chansey Operation. A Porygon made a cameo during the "World of Pokémon" opening narration of the fourth movie, oddly being the only Pokémon in the shot appearing behind a wire fence. It also had a similar cameo appearance in the fifth movie as the "World of Pokémon" segment from the fourth movie was reused. http://bulbapedia.bulbagarden.net/wiki/Porygon_(Pokémon)
Porygon made its first and only major anime appearance in EP038. This episode caused almost 700 children in Japan to have seizures due to a flashing strobe effect, and was therefore banned and never aired again anywhere in the world. Since then, Porygon and its evolutions have never played a main role in another episode, despite the fact that it was actually Pikachu who caused the strobe effect which gave children seizures.
Although it did not appear, a Trainer was attempting to send out their Porygon to fight the Diglett and Dugtrio in Dig Those Diglett!. This was only present in the dub. A Porygon made its dub debut in a brief appearance during a graphic display in A Chansey Operation. A Porygon made a cameo during the "World of Pokémon" opening narration of the fourth movie, oddly being the only Pokémon in the shot appearing behind a wire fence. It also had a similar cameo appearance in the fifth movie as the "World of Pokémon" segment from the fourth movie was reused. http://bulbapedia.bulbagarden.net/wiki/Porygon_(Pokémon)
