you cannot catch the 3 regi's in Pokemon platinum you have to catch them in Pokemon emerald then transfer them to Pokemon platinum. thnx
Chat with our AI personalities
You can get regigigas by either trading it from the event before the release of platinum, or migrate the regis from ruby/sapphire/emerald, then go to the cave in snowpoint city, and catch it while you have all 3 of the regis in your party.
I don't know where regiice is but you find regirock once you've defeated Cynthia twice and registeel in iron island when you get the national pokedex.
you cant. You can only do that on platinum):
There really isn't one that's completeley strong, but you can catch an ice Pokemon that starts off strong: Regice. Try completing the "Regis" puzzle to catch all 3 regis.
you can using cheats,trade or using pal park but without 1 of those 3 u cant