Dittos have different natures and can essentially be the perfect counter part to whichever pokemon you want to breed
E.g Kalos and Kanto starters can be easily bred. If you get a ditto to hold a everstone, their nature can be passed down, which is why many aim for dittos of different natures. --- FC: 3969 4513 2614 (FE:A/PxZ/SMTIV/Pokemon X/Y) PSN (PS3 and Vita): MSMrRound (R3 account) Drop me a PM if you added me and I'll add you back.
Friend Safari has Pokemon 2 perfect IVs. Friend Safari Ditto = easiest way to get 4-5, even 6 perfect IVs through breeding. Also Imposter Ditto, though that is usually not the main reason. --- 3DS Friend Code: 4639 - 9096 - 3760
Breeding. If you breed with Dittos, you can get every breedable Pokemon with a Ditto. You can also breed certain IVs and Natures dependent on the item Ditto is holding. --- Nintendo 3DS Friend Code: 3480-2869-3837 PSN: Tatsuya3001
There are things called IV values. They're unique and essentially either make a Pokemon strong or weaker in certain assets. They can never be changed.
In this game; there are Dittos that can breed with any Pokemon; and these Dittos have 2 FLAWLESS IVs. Breeding with certain items equipped lets you pass down Flawless IVs up to possibly having a new Pokemon with 4-6 Flawless IVs. --- The first thing a god masters is itself. Legion is a Badass. So is Mordin.
Ditto caught from the friend safari can be used to breed a poke with perfect IVs, which will mean that poke will have the best possible stats. It also allows that perfect IV poke to have the correct nature. This is why ditties are so popular. Here is the topic on it.