At the Giant Chasm, there is a Hidden Grotto in the forest area. Enter this Hidden Grotto and you’ll have a very rare chance of encountering a special Ditto. It ranges between Levels 45-50. It also has the hidden ability, Imposter. This is an extraordinarily rare ability only used by Ditto, and the user will transform into the opponent immediately when entering battle.<br />...<br /><a href="https://www.youtube.com/watch?v=kxUVLdXHcF4" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=kxUVLdXHcF4</a>