You can catch it in Reversal Mountain, after having defeated the Elite 4 and Champion.
You can find it in reversal mountain
Trade.
Heatran is a Fire and Steel type pokemon.
aggron is weaker than heatran by a mile simply because heatran is a legendary Pokemon
Cobalion, Virizon, Terrakion Reshiram, Kyurem Latias Uxie, Mesprit, Azelf Regirock, Registeel, Regice, Regigigas Creselia Heatran
its a Pokemon
heatran is a legendary Pokemon and does not have a basic stage. idiot
you find heatran in starkmountain
Of course you can 2nd answer: the only nonunova legendaries you can catch are heatran, latias (white 2), and latios (black 2). You need to make black kyurem (black 2) but white kyurem (white 2) can't be traded. However, if you don't have black kyurem, you can make white kyruem, but only if you've caught kyruem.
in Pokemon ranger 2 i would say darkrai/heatran/garchomp/or charizard.
You can't. You need to get Heatran from Pokemon Diamond, Pearl and Platinum and then trade to heartgold and soulsilver.
Heatran is a Fire / Steel type
Heatran.