* Porygon2 is the only
official Pokémon with a numeral in its name.
** In the [[Generation II]] games, it is impossible to return a nicknamed Porygon2 to its species name, because the character 2 is not available as a character for nicknames.
* Porygon2 is the only non-fully [[Evolution|evolved]] Pokémon that:
** Has evolved by trading.
Is introduced after the generation of its pre-evolution.