First you need to have Regirock,Regice and Registeel.You can get them only with Pokemon Ruby,Sapphire and Emerald.Then migrate them over to your game.If your Pokemon Diamond/Pearl is in Japanese,you will need a Japanese Ruby,Sapphire or Emerald.Good Luck!
the person above is wrong i got to the bottom of the snow temple without regirock , regice and registeel all you need is some good Pokemon to battle him and some witts when it comes to the bottom of the temple , make sure you have good Pokemon and you will be fine :)
Both people above r wrong they didnt even tell you wat to do to get up 2 regigigas
You must have the 3 regi's before you can get regigigas. You can get them in emerald, and then you can get them via the pal park.
Export all three regis from ruby red or emerald green using pal park and the go back with the three regis as your pokemon, then he will wake
beat Cynthia then go to the snowpoint temple and the lady will say you are not the chosen one then another lady will come and say you are the chosen one then you can go in
snow point temple. two rare Pokemon
its in the snow temple after you find your way through the ice maze in snowpoint city
You have to go to snow point city to catch him
You need to beat the elite four and complete the Sinoh dex
he is in the snow point city temple (you need regice reirock and registeel to get him) hope that helps
snow point temple
snow point temple in snow point city its at the top of the town map
in the temple in snow point
Regigigas
You can get it inside Snow Temple but first you must have the national pokedex...
snow point temple. two rare Pokemon
you can get absol but only by snow point city
Regigigas is in the bottom mfloor of snow oint temple. There is one of those ice-floor puzzle like the gym leader in snow point. If you are a using Pokemon PLatinum, It is level 1. But I think its lv70 in D/P. !!
when you defeat the Pokemon league and get your national pokedex.
its in the snow temple after you find your way through the ice maze in snowpoint city
You have to go to snow point city to catch him
its not you idiot. its only in Pokemon diamond Pearl and platinum.