My absolute favorite Pokemon in heartgold and soulsilver is Typhlosion!
It's fire type and i love it because it looks cool and owns with its lava plume!!!
Sorry, but a thread like this really isn't needed here. :\ More so, if one wanted to list their favorite Pokémon, whether it be from HG/SS or any other generation, then it would be best if they used the What's your favorite Pokémon? thread in Pokémon General, thank you.