Yes, but you can find them where there were before.
You have to have a certain Regigigas from an event.
You migrate them from Emerald.You can use this to get Regigigas
You have to take Regigigas to the places each of them are hidden (sorry, I'm not sure where, but serebii.net probably has info). To unlock Regigigas, go to Snowpoint Temple after beating the Elite Four with all three Regis in your party. So as you can probably see, it's kinda difficult, since the Regis would have to be migrated from Sapphire/ Ruby/ Emerald. Hope this helps! :D
You need to get the special movie Regigigas.
You have to get the event Regigigas to get the four regi's ( I know stupid right)
Regigigas was not made during the Emerald era, you can only get the 3 Regis. Regigigas is only obtainable in Diamond, Pearl, Platinum +
No because Regigigas appears in Regice's Cave and it needs to be caught or defeated prior to Regigigas appearing.
you need to have a special regigigas in your party for them to appear. you can only get the right regigigas through an event (maybe you can also get a good regigigas with the action replay). you can only get the 3 normal regis in platinum and not in pearl or diamond.
You have to have an event Regigigas in Diamond or Pearl then transfer it to Platinum in order to be able to unlock the secret caverns to be able to battle and catch Regirock, Regice and Registeel in Platinum however migrating Regirock, Regice and Registeel from a Game boy Advanced game (Ruby/Sapphire/Fire Red/Leaf Green/Emerald) into Platinum will help you to unlock a Regigigas but this specific Regigigas that they unlock is at Level 1 and resides in the Snow point Temple in Snow point Temple and this Regigigas will not unlock the secret caverns for Regirock, Regice and Registeel. Listen to me I'll give you one for free i have hundreds of them I'm selling them so just ask me for some trust me i have them
There will be one from March 8th to the 21st to at toys r us to get a lv. 100 Regigigas that can unlock the three other regis in the upcoming game platinum
No. there are only Regigigas and regirock/ice/steal (u can unlock regirock/ice steal by obtaining Regigigas from movie 11
To awaken Regigigas you need to migrate from Ruby/Sapphire/Emerald the three Regis.