>>21590298>What if Imposter Ditto face Imposter Ditto?Since Generation II, Transform and (Imposter along with it) will fail if used on a pokemon that is in a Transform-altered state.
The second Imposter Ditto would fail to Transform.
>What if Ditto transform in front of shiny pokemon? >What if shiny Ditto transform in front of non shiny pokemon?In Generation II, Ditto maintained its shiny or non-shiny status when transformed, so a normal Ditto would always transform into a normal version of the opponent, and a shiny Ditto will always transform into a shiny version of the opponent.
In Gen III onwards, Ditto will copy shiny/non-shiny status when transforming, so a normal Ditto will turn into a shiny if it copies a shiny and vice versa.