First, get all eight gym badges. Next go to Evergrande. A water fall block the city so use the HM you found in the cave with Groudon. GO TO THE POKEMON CENTER!!!!! (you must do this before you continue) Go to the cave and get to the other side. Wally will battle you. If you lose, You go back to the PC. If you win, leave the cave. Go to the building and heal from the battles. Buy supplies and talk to the boys. They will let you through, but you never go back until you lose. finnally, battle the champion. win and you are the new champion
The Champion of the Hoenn region in Pokemon Ruby and Sapphire is Steven Stone.
If you mean "Is Juan the leader in Pokemon ruby?", then no. It's Wallace who's the leader. Juan is leader only in Pokemon emerald. The champion is Wallace in Emerald, but Steven is the champion is Ruby and Sapphire.
train
I'm going to assume you mean "Pokemon Ruby" in your question. Anyway, to trade between Ruby and XD, you must beat Pokemon XD and defeat the champion in Ruby.
ememrald only and you have to beat the pokemon elite four and pokemon champion first
Yes after becoming Pokemon champion in both games you can trade but after firered delivers the ruby and sapphire to celio at one island then you can trade.
Sorry, you can't in Pokemon Heartgold. But you can in Emerald, Ruby, Saphire and crystal.
After becoming champion of Hoenn by defeating the pokemon league
Wallace he was the former 8th gym leader in ruby and sapphire
Suicune will appear after becoming pokemon champion and delivering the Ruby and Sapphire to Celio in One Island.
It's because on Pokemon Ruby and Sapphire, Steven is the league champion and on Pokemon Emerald Wallace is the champion instead of the final Gym Leader. Juan doesn't exist on Ruby or Sapphire.
it is a random encounter after you beat the champion and the elite four, latios could appear anywhere