[Xatu_Of_Doom]

I know loads of people say MissingNO. was a left in beta test thingy, but what are other people's opinions on how that glicthy block came to be on pokemon Red and Blue? In my opinion, it is a lost piece of data in the game which may of actually been a true pokemon at one point. MissingNO. is the only pokemon which is a bird type for one thing, so MissingNO. may of been a pokemon like Pidgey at first, tell game freak changed it. Or maybe MissingNO. was a different pokemon, but it was removed from the game and the whole media of pokemon.