You can't get regigigas in ruby.
You can't get a Regigigas in Sapphire, Ruby or Emerald. Regigigas is a Generation IV Pokemon, and Sapphire, Ruby and Emerald are Generation III games.
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 ^.^
I only know Regi rock,regi ice,regi stell and raquaza
You can only get regi ice in sapphire,ruby,and emerald.
you need to have atleast beat the Pokemon league once in dimond and you should be able to migrate.You also need either emerald version, Sapphire version, or ruby version catch regice, regirock, registeel then migrate into dimond version
for regi rock it is in the desert for regi steel it is on route 120 for regi ice it is on route 105 hope that helps:P
migrate it from ruby, sapphire, or emerald
its not the best but it can help you find the regi's on emerald and ruby & saphire
The regi's didn't exist in Generation 2 games. They were introduced in generation 3, namely ruby, sapphire, and emerald.
DotBraille is Regi's language in Ruby, Sapphire and Emerald. By reading them in the walls and de-coding them, you can find Regi's (expect Regigas!).
you have to import it from emerald,ruby or Sapphire you have to import it from emerald,ruby or Sapphire
You have to beet the elite four and inside there is regi gigas