Alternate forms that result in type changes are included for convenience. The first Pokémon, Bulbasaur, is number 0001 and the last, Mew, is number 0151. The following list details the 151 Pokémon of generation I in order of their National Pokédex number. The first generation (Generation I) of the Pokémon franchise features the original 151 fictional species of monsters introduced to the core video game series in the 1996 Game Boy games Pocket Monsters Red and Green (known as Pokémon Red and Blue outside of Japan).