>Blue's Raticate died during your fight with him on S.S. Anne. Ironically, his Fearow also dies when you fight him during his Raticate's funeral in Pokemon Tower in Yellow version.
>Dataminers have found code for a hidden code that references an unobtainable Pokemon. Its name is "Mew", and people believe it may be the long lost "151th" Pokemon rumored to be in the game.
>Due to an error in the code, instead of taking double damage from ghost type moves as intended, the psychic type Pokemon will instantly win the fight instead. This wasn't caught during testing because that's what usually happens when you use a psychic type anyway.
>Cubone was originally Kangaskhan's baby. This is why they don't share a typing and why their movepools are completely different.
>Ditto is actually a Mew that got really fucked up and forgot how to transform back into Mew
>Ditto is actually Mewtwo's biological father.
>Ditto is actually the player's biological father.
>Your rival doesn't have parents because they died in Pokemon World War
>The game is actually your player comatose dream after he was knocked out by a feral Pikachu after walking into the grass outside of Pallet Town. Your game's internal battery dying is the doctor unplugging your life support.
>Flying type was originally going to be called Bird type. This was changed when GF realized that they wouldn't be able to make the Owl Pokemon that they wanted to create, as owls obviously aren't birds.
>Lavender Town's original theme was actually a thrash metal track. This was cut in favor of a less frightening track because the testers kept committing suicide under mysterious circumstances.