You cannot
You don't
I don't believe you do. When you want to challenge him again you go to the top of Mt. Silver and he will be there again.
You have to beat all 8 gym leaders
It's Darkrai. You can't get him in Heart Gold.
Pokemon Heart gold is different from Pokemon Gold cuz heart gold has better graphics new Pokemon and new events
Just defeat the elite 4 again and he will return.Hope it works.
im not sure but i think u can by attaking the same Pokemon over and over again
Go defeat the elite four again and all non caught legendary Pokemon reset
To get a Shedinja in Pokemon Heart Gold you must trade it from either Pokemon Ruby, Sapphire or Emerald. Jacko25
you cannot get him in heart gold only from events.
No so have a friend trade you there's.
No