Mt Moon is only one floor in Heart Gold/Soul Silver.
In HeartGold and SoulSilver Versions, Red is found on top of Mt. Silver.
its in the city where Whitney is and after u beat her just go to the flower shop which is on the top right corner of the city
In heartgold/soulsilver you can't because the guard never moves or for older versions i am not sure of.
I think you mean Silver/Gold/SoulSilver/HeartGold. It is located on the top left of Ecruteak City, Johto.
You trade Pokemon from Pokemon Heartgold and Soulsilver to Pokemon Diamond by going to the wifi room in the Pokemon center on the top floor. You also need to have a copy of Pokemon Diamond and have to have a friend or someone who has a copy of Pokemon Heartgold or Soulsilver. You will see someone there if you are going to trade with someone. Talk to the person you are going to trade with and ask them if they want to trade. The top floor is the Union Room no Friend Code needed the basement is the Wi-fi room, which requires a Friend codes
In Heartgold and Soulsilver, Red is Ash Ketchum(also you can find him on the top of Mt. Silver. He has Pikachu, Charizard, Blastoise, Venusaur, Laprus, and (I am not sure on the last one, but I think it is either Gyrados or Dragonite). It is Snorlax.
You have to climb the mini game, look for it on your map it will show you.
use the pokeflute but if ur in heartgold or soulsilver, move the dot on ur radio to the top of the circle (pokeflute channel)
In HeartGold, you have to get a bell from the Kimono girls, and then you can go to the bell tower in Ecruteak top catch Ho-oh. In SoulSilver, you can fly to Ecruteak to catch Ho-oh.
Arceus does not appear in heartgold or soulsilver so you got to know the only way is to trade it from Pokemon diamond pearl and platinum and you need to get an azure flute and go on top of mt coronet and go into the hall of origin where arceus is waiting for you.
(This is for both Heartgold and Soulsilver) You must beat Red at the top of Mt. Silver, then go to Mr. Pokemon's house (Between Violet City and Cherrygrove City) and he will give you the Blue orb/Red orb depending what game you have.
If you are talking about Heartgold, and Soulsilver, and in Kanto, then in order to wake the SNORLAX in front of the tunnel, you use the Pokeflute, which you can get to by tuning in your pokegear radio to the very top.