DON'T DO IT!!! If you do, then it'll be gone forever and you can't fight it again!! I did that with Arceus... I restarted the game just so I could try to get him again.
keep training, all legendary Pokemon fall in time
No, it's not possible.
Number 149 happens to be Dialga, the legendary time pokemon
well nothing really happens you just have the joy of having all the unown ANSWER well actually u get to find the legendary dogs
Nothing much happens, but they may have been the last required Pokemon to complete the Sinnoh Dex. dude! that's so wrong, I tried it! I took it to the celestic town and went inside the cave and press a to the picture of 3 legendary poke mon. It will shine and many thing happens which is really hard to say
The only way is to not save and battle it again.
Nothing happens after that. You just caught the three legendary roaming Pokemon in the Johto Region.
If your legendary Pokemon run away in Shiny Gold, there is no way of retrieving them again.
they give you a legendary
It unlocks legendary Pokemon for you.
You get an achievement
keep training, all legendary Pokemon fall in time
nothing really
You can not breed legendary pokemon.
you find the legendary Pokemon heatran
you have to find them again
They will simply gain Exp. You can't breed legendary pokemon.