Trading from heartgold to soulsilver
You can get groudon in Pokemon soulsilver and kygore in Pokemon heartgold (both are found in the embedded tower on route 47).
If they weren't in the original gold and silver, they probably won't be in those ones.
you cant catch kygore in pokemon platinum unless you migrate from pokemon sapphire or emereld
Trade Kygore from Heartgold then talk to proffeseur Oak with groudon and Kygore in your party
You're better off learning how to fly irl then catching a kygore on ruby.
Not without cheating. Ruby can get Groudon and Rayquaza, Saphire can get kygore and rayquaza, but only Emerald can get them all.
in aqua hideout 90%
Sadly, kygore is only available in sapphire and emerald. To get kygore in ruby, u need to either trade or hack (im no good in hacking so i dont know how)
No you can't.
you fight off groudon and kygore
I believe you can, but only with action replay.
you catch the hoenn legnds kygore groudon and rayqaza