use the poke radar on route 218 (rare)
find a ditto. it can breed with any gender of kind of Pokemon except legendary.
You dont You have to migrate from Fire Red or Leaf Green
At the trophy garden, rarely. it's in Pokemon platinum.
info on manaphy in Pokemon mansion. trade for manaphy, and breed with ditto. you get a phione
Ditto only appears at the Trophy Garden on certain days. You can catch other rare Pokemon there on other days. Hope this helped! =) (Even on the right day Ditto is rare.)
after getting the national dex go to the Pokemon mansion and talk to mr. backlot. he will say he saw a Pokemon in his garden if he says ditto then go look on the garden
you have to do the mission in Pokemon rangers(manaphy egg mission)and trade it to your platinum you can get phione by breeding manaphy with ditto at the day care.(its not fair to have 2 games for just a Pokemon in platinum)
You can find it at random days in Pokemon Mansion in route ---, talk to Butler (or whatsoever) and he will say random Pokemon is in the garden, if is ditto, go get it!
You can't find one! You need to breed a manaphy in the daycare with a ditto and when you get an egg in will be a phony.
from what i know, you can't. srry. :) but you might get lucky and find someone. from: flyguy007 Hi this is flyman1111 i think you can duplicate items in Pokemon platinum all you have to do is get a ditto and a Pokemon with thief make sure the Pokemon with thief is holding the item you want to duplicate then you get into a double battle use thief on ditto and ditto will have the item that the Pokemon with thief has =] hope it has helped and worked
You can't catch ditto anywhere but the trophy garden. You could migrate it, though. That's what I did.
In Mr. Backlot's trophy garden. However, it is rare to find. It's a daily Pokemon so you don't need him to tell you there are ditto in his garden - just keep trying.