yes go west then north a little bit then go west agin then north a tiny bit and ull see his cave
ewan q
You can't get him in platinum. You have to transfer him from a Sapphire/Ruby/Emerald.
you can't. trade with someone who has a ruby, sapphire, or emerald version
you must trade him from either Pokemon ruby, sapphire, or emerald.
Kyogre, latias, latios, regiice, registeel, and regirock.
you either need an action replay or you need to transfer them over from Pokemon ruby/sapphire
Differnt ways there are regiice registeel and registeel and groundon etc. search them on google
The only way is through migrating them from Pokémon Ruby, Sapphire or Emerald or by trading.
You can only get a regice, regirock, and a registeel by migrating them from ruby or Sapphire. If you migrtate these Pokemon you can also catch regigigas.
regiice cant be caught in Pokemon diamond, it can in platinum version, how ever you can transfer a regiice from ruby, sapphire or emerald if you have 1, or there is the method of cheating in which i am against. cheats lead to glitches and unsolvable problems. u can only get the regi known as REGIGIGAS.
there is a labrynth of islands and rocks that you need to progress through to get to regiice. this maze begins toward the south west of rustboro city.
you can ethier catch them or use acheat when you get so far in the game. you catch them. they are kyogre,deoxys,castform,regirock,registeel,and regiice.