From Bulbapedia, the community-driven Pokémon encyclopedia.
In each Pokémon game of Generation V, all Pokémon have an unseen index number used to identify them in the game's ROM. All of them are in their National Pokédex order. Numbers 652 to 684 were added in Pokémon Black 2 and White 2 and are empty in Pokémon Black and White.
Generation IV hybrids do not exist in Generation V because with the exception of ----- the game withdraws the information for the species pointers associated with index number modulo 651.
List of Pokémon by index number
|| This list is incomplete.|
Please feel free to edit this list to add missing information and complete it.
Reason: Information needed on 649+ index numbers in BW.
These Pokémon (see Glitch Unown#Generation V Glitch Unown) could be possible placeholders for Legendary Pokémon events and alternate forms from various Pokémon, hence the equal typing, abilities, and moves, as well as 688, 689, 697, 698, 699, 700, 701, 706, 707, and 708 having a gender. In addition, all of them have 1 or 2 stats that exceed the limit, but are neutralized in link battles. All of these have the cry of a Bulbasaur. It is possible that they may be a result of the sprites of Unown being stored at these index numbers, similarly to Generation III, with garbage data left to fill in the Pokémon data.