the gym leader is pkmn trainer Blue.Pokemon are:exeggutor 55,rhydon 58,arcanine 58,gyarados 52,machamp 56 and pigeot 60. the gym maze is romm full of push tiles. for more info. please visit pokemon.marriland.com. and I am NOT, Marriland.
No, there are no underwater routes in Pokemon HeartGold or SoulSilver. The HM Dive is not available in Pokemon HeartGold or SoulSilver.
you cant catch persian in heartgold.... i think
YES=)
You need a Rotom as the first Pokemon in your team.
Yes you most definitely can
Go to the forth gym!
You will have to defeat Bugsy in Azalea Town. He has bug-type pokemon.
In Mahogany town right from Etrack city
it is bugsy the bug type leader
blackthorn city
It is your rival from Pokemon fire red and leaf green versions.
you have to get the cianwood gym badge and the olivine gym badge
you get it in ilex forest after you get your 2 badge! hope this helps
go to the sprout tower in the town where you get the first badge at night.
in Goldenrod city
It is in Ecrutuk city the leader is morty who uses ghost type Pokemon
Once you have talked to blue on cinnabar island, you can go back and battle blue for the 16th badge.