No one could tell you this except for a Gamefreak worker who worked on one of the pokemon projects.Pretty sure we don't have any of those.Sorry.
No, like Ike said, only a GameFreak worker would know for sure, but there was MissingNo., though. > http://pokemondb.net/pokebase/43960/was-missingno-originally-supposed-to-be-a-real-pokemon
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