In Pokemon Ruby, Wallace is the gym leader of Sootopolis City. When the player first arrives in the city, Wallace is not at the gym. He and Steven are north of the city. They take the player to the Cave of Origin where Groudon is encountered. After this battle, Wallace can be found and battled in the Sootopolis Gym.
In the 8th gym. he is the gym leader
You get it in Sootopolis city. If your playing Ruby or Sapphire. You would be fighting Wallace. In Emerald, You fight Juan.
Juan is a gym leader in Sootlopolis City. To get there, you have to use dive. Wallace will be the champion. In ruby and sapphire, Wallace will be gym leader and Steven will be champion.
Pokemon Ruby has Pokemon that Pokemon Sapphire does not and Pokemon Sapphire has Pokemon that Pokemon Ruby does not.
You can trade from Pokemon Ruby to another Pokemon Ruby using a link cable.
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.
new mauville after you get a key from Wallace
by fighting
I believe you have to talk to Wallace
In the 8th gym. he is the gym leader
He is the sootopolis city gym leader.
Go to the Elite 4, and beat them.
I don't know!Wallace appears in Ruby Sapphire and Emerald.Most likely from Emerald but there may be some elements from Ruby and Sapphire.
Wallace he was the former 8th gym leader in ruby and sapphire
Wallace is the Gym Leader of Sootopolis City so you will be able to verse him once you challenge the Gym.
You get it in Sootopolis city. If your playing Ruby or Sapphire. You would be fighting Wallace. In Emerald, You fight Juan.
I'm sorry to say it, but "that guy" is not a Pokemon. He is, however, the leader of the Sootopolis Gym. In Ruby and Sapphire, he was Wallace. But in Pokemon Emerald, he became Juan. Wallace then became the Elite Four Champion.