I Want to know how I'm supposed to get a groudon on fire red?

You can't get Groudon in FireRed. Only by trading it from the RSE games.

Yep, but you can't get groudon in Sapphire...

You can catch it in Ruby or Emerald (it's a little easier to catch in ruby, as it's a lower level and you can catch it earlier) and then Trade it to yourself using two gameboys and a gamelink cable.

You can only get it from Ruby/Emerald games, but if you have action reply or gameshark you could find a cheat to catch it, hope I helped

Well, there is a slight problem. You cannot catch Groundon on Pokemon Fire red, or Pokemon Leaf Green. In order to get a Groundon on Pokemon Fire Red, you will have to catch one on Pokemon Emerald, or Pokemon Ruby, and transfer it to Pokemon Fire Red.

Hope this helps.

You can't.

No, but you can Trade it with Ruby or Emerald

You can't get it in fr you can only get it legit from emerlad or Ruby and trading it to your game. I suggest you get it from Emerald beause you can clone it there and keep it on your fr and on emerald

You have to Trade it from Ruby/Emerald/Saphire

If you see a cheat that you can catch Groudon, don`t pay attention to it you cannot catch Groudon or other Hoenn pokemon. But you can catch Johto Pokemon and legendaries from Johto.
good darkrai

You can't Trade to fire red I don't think, it might be unable to it says something to you because can't trade Pokemon from hoenn.

Sorry to point this out, but why does this question need ten answers which are all the same?