You can catch all three with ultra balls. Some may say that doesn't work but I've done it and caught them all with only 5 ultra balls each. Just to be safe though, I'd buy 10 for each. Hope this helped!
you need REGIROCK, REGICE, AND REGISTEEL.
train them
You cannot. You will have to trade it.
Registeel
to catch regirock u go 6 down 9 left and 39 up
Regirock, and finally Registeel.
Sorry but you have to catch Regice, Registeel and Regirock in order to catch Regigigas.
no you can, you most catch it in Pokemon emerald
you cant. regice regirock and registeel are all part of the hoen pokedex
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.
Yes First, you need to have a Regirock/Registeel/Regice in your party.
Regice: mt coronet exit regirock:sand storm place registeel: iron island order: Regirock regice registeel