Flash is an initial move learned by Volbeat in Generation IV. For the Pokemon who can learn Flash through TM70 in Generation IV, see http://bulbapedia.bulbagarden.net/wiki/Flash_(move)#Generation_IV_2.
Use the HM Flash this is given by the sage at the top of sprout tower.
Most electric types can learn flash like voltorb and magnemite.
To get a Shedinja in Pokemon Heart Gold you must trade it from either Pokemon Ruby, Sapphire or Emerald. Jacko25
Of course
you can buy flash at the department stores
you buy them at the big pokemart at golden rod city
I dont think that there are any pokemon that know it without a tm. Get a togepi, togetic or togekiss and a flash tm. They can learn that move
Flash is an initial move learned by Volbeat in Generation IV. For the Pokemon who can learn Flash through TM70 in Generation IV, see http://bulbapedia.bulbagarden.net/wiki/Flash_(move)#Generation_IV_2.
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
From the dungeon
You have to talk to the Move Tutor for Piloswine to relearn it. An alternative is to breed a Swinub with Ancientpower as an egg move or to take it to a Move Tutor.
Use the HM Flash this is given by the sage at the top of sprout tower.
On Pokemon Heart gold Version flash is a TM, TM 70 to be exact and is sold in goldenrod city department store or you can do this.... Or you can obtain it for free at Violet City's Sprout Tower. Or this Or that wth? And what is .... anyway?
Most electric types can learn flash like voltorb and magnemite.
To get a Shedinja in Pokemon Heart Gold you must trade it from either Pokemon Ruby, Sapphire or Emerald. Jacko25