yes you do have to beat red and then go see Mr. Pokemon at his house to get a red orb. you will find it in the embedded tower near Cinawood city good luck because it is at level 50.
then you fight groudon
You can always catch Groudon. And Rayquaza too.
Beat all 16 gyms and talk to Professor Oak after beating the elite 4 twice + beat RED. You can't get the red orb. If you want a Groudon, you´ll have to trade it with somebody that has SoulSilver, or you can get Groudon with cheats.
first you have to beat red after you beat the game and get rock climb then go to red i suggest level 70's but i did it with level 70 and lower, next get the kanto starter then go to mr Pokemon you get the red orb then you can get groudon
Well a bunch of things unlock you could get groudon or you could just start a new game i can't beat red anyway lol but that's a pretty good thing to do get groudon is my answer hope you can get to him!
first you beat all 16 gyms go beat elite four beat red and he will be at the embedded tower after you get the red orb from mr. Pokemon
Groudon is red and black (mainly red)
After you beat Red, go to Mr. Pokemon. He will give you the Red Orb which you can use to get Groudon. Then, you have to use HeartGold to get Kyogre the same way. Trade Kyogre over and go to the place where you got Groudon.
go to the cave of origin after you beat the magma hideout.you have to have a red orb to do so
use water or grass type moves to beat it although most people think Groudon is a fire and ground type but it is only a ground type fortunately.
if you mean groudon and kyogre, beat red and visit mr pokemons house
blue orb for groudon and red orb for kyogre