There is a map guide that shows you where you can catch everyone.
Regigigas is at the snow point temple but you have to have regirock regice and registeel
in my butt
map #3
in professer rowans breifcase
You don't, kyogre is in the cave of origin
You can't find registeel in Pokemon HeartGold.
go on map 6 to find shinydeoxy even you find a regiagas
You can obtain a Registeel by trading it from Ruby, Sapphire, and Emerald.
You dont find registeel on D or P. U have to transfer him from Ruby, Sappire, Emerald.
we should go on map8 to get articuno in pokemonlake
www.pokemonlake.com
any where after ur selected Pokemon are at lv.100