you eat it if your hungy if not then use your blob of pikachu
its in the snow temple after you find your way through the ice maze in snowpoint city
go to your menu and click go up.
trane your pokemon.
You must have all three of the 'Regi' pokemon. Regice;Regirock;and Registeel. Then go through the ice maze; and there should be a regigas standing there. Have some poke balls; and strong pokemon. Regigas is encountered at lvl 70. (correct me?)
Skill.
by going through it
gamefaqs.com lol
dont be idiots!
She is the POKEMON CHAMP!She helps you through the story
if you have the three regis in your party you can get regigigas. anyway i have no clue right now
you get it through a mass breakout.
Through Mt. Coronet