Pokémon Red and Blue Versions/Development/As Red, Green, and Blue/Game Center CX

A Japan-exclusive special Pokémon episode of , known as Retro Game Master outside of Japan, included an interview with Satoshi Tajiri, where he revealed early character profiles of,  and. Notably, they are given a National Pokédex number which matches their internal index number, rather than their final Kanto Pokédex number. Nidoking, for instance, is noted as being #007, rather than #034, either suggesting that there was another method of ordering the Pokémon proposed, or that they reflect their ordering in the internal data. The latter is supported by interviews with Ken Sugimori, which verify that, which has an index number of 001, was the first Pokémon ever created, and early sketches from Capsule Monsters featuring Rhydon. Nidoking is also referred to as 「マイコー♂」 Maikō♂, indicating that there were either placeholders or alternate names for Pokémon before the development of had finished.