By "gate" you are most likely referring to the Pokemon League Gate. It may be found by Surfing east of New Bark Town and traversing Tohjo Falls. Then you must climb up Routes 26, 27, and 23.
in the victory road gate,its on the left.but you can only get there after you defeated blue.
in heart gold you can find kyoger in a cave in the safari zone gate
In Pokemon platinum you must find all the Pokemon in your game to be aloud past so it should be the same in your game
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
They are not in Pokemon HeartGold
where is the pokemon transfer lab in heartgold
Go West from Ecruteak City. There should be a gate house. Then just follow the path, it's pretty straightforward.
No, but you can trade Pokemon only in HeartGold to Black
Aura Beam is in Pokemon HeartGold.
That is impossible in Pokemon HeartGold and SoulSilver.
No, there are no underwater routes in Pokemon HeartGold or SoulSilver. The HM Dive is not available in Pokemon HeartGold or SoulSilver.