Porygon

Porygon (Japanese: ポリゴン Porigon) is a -type Pokémon introduced in Generation I. It has the National Pokédex number of 137. In Pokémon Platinum, you can get one in Veilstone City by talking to a man in one of the houses.

Appearance
Porygon is a Virtual Pokémon. Its body shape looks like a polygon. In various parts of its body, it is colored red, white, or blue. It has a hexagon for an eye.

Special abilities
Porygon can have the ability Trace or the ability Download. Trace copies the opponent's ability. Download increases Porygon's Attack or Special Attack depending on the opponent's defenses. It is the first artificial Pokémon, created by scientists at the Silph Co. company.

Evolution
Porygon is able to evolve into Porygon2, though only through Trade while holding the Up-Grade item, and then into Porygon-Z while holding the Dubious Disc while being traded.

In the anime
Porygon appeared in one of the most well known banned Pokémon episodes, Electric Soldier Porygon, which has hospitalized over 700 Japanese children due to flashing strobes causing them to have seizures. Due to the happened hiatus, the show skipped 4 months after the episode and it was never aired. However, it is available at YouTube (Warning Watch at your own risk). It is based of an Electronic system operator, and teleports with Ash, Misty, and Brock.

Trivia

 * Due to the episode, Electric Soldier Porygon, which caused 685 Japanese children to have epileptic seizures, Porygon has never had another appearance in the anime or in any film adaptation of the series, except for one brief cameo appearance at the beginning of the 2005 movie, Pokémon Heroes, and neither have its evolutions, Porygon 2 and Porygon Z, in an effort to block the traumatizing event from the minds of viewers even though it was Pikachu who caused the seizures when it's eyes where blinking red. Porygon made a cameo in an episode in the "Orange Islands" series as a "Who's That Pokémon?" clip.
 * Porygon is a pun of "polygon"
 * Porygon can possibly have the ability to go into computers.
 * According to the Pokédex, Porygon can travel freely in cyberspace thus able to go into the internet.
 * Despite being a manmade Pokémon made of computer data, Porygon can be hatched from an egg.
 * Suprisingly, Porygon is not a polygon in the games, but a sprite rather.
 * Strangely, in the episode Electric Soldier Porygon, it looked to be at least 10 feet, but it is only 2 feet tall.

Porygon is the only Pokemon that needs to be traded to evolve both times.