I REALLY need one for breeding. I looked in the PokéLocations, but it said you find them in "Plains" What does that mean? Apparently they're uncommon (but I can get that if I figure out where "plains" is.) I haven't ever seen one! IT ISN'T IN MY POKÉDEX, FOR GOODNESS' SAKE!
I really need help! :(
You can find Ditto in the Hidden Grotto or Crater Forest area of the Giant Chasm.