From Bulbapedia, the community-driven Pokémon encyclopedia.
This is a reverse-chronological list of Nintendo event Pokémon that were given away in 2004 for all North American Pokémon games.
List of event Pokémon
These six Pokémon were given away as Eggs at the New York Pokémon Center; all of them know the move Wish as well as another special move. They were available to Pokémon FireRed and LeafGreen players from December 16, 2004, to January 2, 2005. The Pokémon may have been hatched in another game before being sent to Pal Park, and so they may have arrived from either Kanto or Hoenn.
PCNY Pokémon Box Ruby & Sapphire
Last of the many Pokémon collectively known as the PCNY event Pokémon, these were distributed in the Pokémon Center store in New York on July 10, 2004, just one day before the release of Pokémon Box Ruby & Sapphire. They may either have the OT PCNYc or PCNYd only; all may be either from a male or female OT. The ID Numbers range from 00001 to 01000.
This Pokémon event was distributed as a promotion to get people to fix a Berry glitch on Pokémon Ruby and Sapphire that plagued many players. It was distributed at GameStop starting March 1, 2004, as well as receive it from the Game Cube Interactive Multi-Game Demo Disc Version 16. Its name will always be in English. Note that its Original Trainer from Pokémon Sapphire was named with SAPHIRE instead, possibly due to the input limitation.