You can get it in the temple in Snowpoint city when you have ONLY regirock regice and registeel in your team.
I heard you can get the 3 by using pal park from emerald By GBA slot.
There is no Pokemon named regigas. so there is no code.
You can get it at the snowpoint city temple at the bottom of the temple.
you don't need regigigas for registeel. you need reegisteel, regirock and regice for regigigas on Pokemon pearl or diamond
The legendary Pokemon are: Dialga, Giratina, Rotom, Cresselia, Uxie, Mesprite, Azelf, and Regigas.
You have to migrate ALL THE REGIS from Emeraled, Ruby ,or Saphire
migrate regirock, regice, registeel, and then you can access the regigas (migrate from emerald, ruby, or sapphire)
you can't.. make sure you have the three regi's and migrate them to Pokemon diamond/ pearl. You need National Dex. Now enter the Snowtemple in Snowpoint City. Regigas will be waiting if you bring the 3 Regi's.
i am not sure but you should trade with someone who has ruby sapphire and emerald. One PKMN from each of those games you need to get Regigas i think
By redigas, do you mean Regigas? And no Regigas is a legendary. No Pokemon evolves into it.
It's spelt different (i think like regigigias) and nothing special happens after, but you've got a strong Pokemon!
those Pokemon are shaymin, darkrai, and the best arceas.
No, but another Regi exists in this game. Also in the game that is coming out (Pokemon Platinum) Regigas has a new form.