Notes:Pokémon Red and Blue

The table below illustrates the order in which Pokémon are stored in the ROM, compared to their actual Pokédex order. It also specifies which Pokémon species each MissingNo. will become when traded to Gold, Silver or Crystal. These are essentially just the last 40 Pokémon in the Generation II Pokédex, except Celebi is missing and Ho-Oh appears earlier in the table at slot 052, out of order with the remaining Generation II Pokémon. This has led some to speculate that Ho-Oh was originally meant for Red and Blue, but removed late in development.

Two of MissingNo. slots were later refurbished as fossil sprites used in Pewter Museum, while a third one became the sprite used for an unidentified ghost. These are acknowledged near the end of the table.