buy it in the shopping centre
Use a thunder stone
You can buy the TM Thunder wave in the Goldenrod City Department store.
2500 points
You can buy it from the Goldenrod Department store on the level that sells TMs.
Trade from Pokemon Diamond, Pearl, or Platinum Version.
it's the thunder stone and at the pokeathon on wednesdays for 2000 or 2500 bp
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
They are not in Pokemon HeartGold
you find them in random pokeballs, or some times people will give them to you. its completely random
where is the pokemon transfer lab in heartgold
TM25 Is Thunder.