There is a low chance of getting a shiny regigigas. But if you save in front of it when you haven't fought it before, then fight it. If its Figure on the battle screen is shiny, then congrats! If its not, then just retry it. Keep in mind, It will take a LONG time. As the chance of getting a shiny is very very very low. (I forget the statistics)
By redigas, do you mean Regigas? And no Regigas is a legendary. No Pokemon evolves into it.
There is no Pokemon named regigas. so there is no code.
LOL on ecruteak city near
you have to go to mystery gift and go to wi-fi connection and you will get a regigas gift from the pokemart.
Normal type
you can't
softball is the answer man ctach
It will be at the hippowdon temple
aegis cave
It is in the forest area of it but you also have to ctach it at night.
nope you need to ctach groudon then use fly with it
A Red Gyrados is just a Shiny Gyrados. Theres a 0.5% chance that you'll run into a shiny Pokemon, or the PokeRadar can eventually find one by creating a chain of finding and either capturing or defeating the same Pokemon over and over again. If you run, that will break the chain. However, in Pokemon Gold, Silver and Crystal (as well as Heartgold and Soulsilver) just surf to the center of the lake of rage (north of mahogany town) and you will find a red gyrados.