You'll be able to go inside Snowpoint Temple. Regigigas will be in there.
You migrate them from Emerald.You can use this to get Regigigas
not. you will have to migrate them from emerald
You have to migrate ALL THE REGIS from Emeraled, Ruby ,or Saphire
You must Migrate from Sapphire, Ruby or Emrald.
you can't- make Pokemon migrate from Pokemon ruby/sapphire/emerald or trade from diamond and pearl or platinum.
Actually you're wrong you can NOT get the regis in Pokemon diamond, to get the regis you need Pokemon ruby/Sapphire/emerald you can get all three regis there(regi ice, regi steel, regi rock) althought if you migrate all of the regis onto Pokemon diamond you can get regi gigas(king regi) you will find him in the snowpoint temple after beating the elite four. Thanks hope i helped ^.^
Regis Rock, Ice, and Steel? No... You can only get that in Pokemon Saphire and Ruby... But if you migrate them from the Saphire/Ruby, you can get the King/Ruler of Regis in the Snowcity place... in the temple thingy-mi-ding!
TO get the regis migrate the one you want with 5 other Pokemon to diamond (get the regis in Pokemon R/S/E) and go to pal park Go catch them with GS like balls with a catch rate the same as a master ball O_O
either you get Pokemon emerald or Sapphire, and if you want them on diamond or pearl you have to beat the elite four and then migrate.
migrate from ruby sapphire and emerald
No. You can only catch the 3 regis, (regice, regirock, and registeel) and then in Diamond, Pearl, and Platinum if you migrate the 3 regis to your account you can get regigigas at the bottom of the snowpoint temple.
Nothing special, but if you migrate them over to Diamond, Pearl, or Platinum, when they are at the same level, you can get Regigigas.