Once you beat Red on top of Mt silver, you can go talk to mr pokemon. He will give you a blue orb if ur playing heartgold and red orb if soulsilver. This orb lets you get Kyogre with the blue orb and Groudon with the red orb. So you can only get one of those in one game. To get rayquaza you have to bring both a Kyogre and a Groudon (both have to be from HG SS and not Sapphire/Ruby or any other version) to Prof Oak and he will give you a green orb which allows you to get Rayquaza. All 3 of these legendaries are just South of the Safari zone. You need Surf and Rock climb to get there.
that's it i think
Not in Platinum but in HG/SS you can
At the embedded tower after getting both Groudon and Kyogre. Have to trade either Kyogre or Groudon from HG or SS.
Raquaza
Catch raquaza
Raquaza isn't in either Pokemon Diamond or Pearl.
raquaza is a master legendary Pokemon in emerald ruby and Sapphire. his is most likely to be the best Pokemon in the series (Case in point)
You catch Raquaza in the Sky Pillar on the island near Pacifilog City.
trade it from emerald or get a gameshark and get some code to get a raquaza
ruby=groudon+raquaza+latios+the regis sapphire=kyogre+raquaza+latias+the regis emerald=raquaza+groudon+kyogre+latios or latias+the regis
no
you cant.