the same Pokemon as sapphire sealeo luvdisc whiscash seaking milotic
you can't get the black flute in leaf green but you can in Pokemon ruby, sapphire and emerald then trade it to leaf green.
It is in the wild, anywhere. Whenever you change location (go into houses, etc) it will change place. You need to 'unlock' it before you can get it though.
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.
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.
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.
by fighting
I believe you have to talk to Wallace
In the 8th gym. he is the gym leader
new mauville after you get a key from Wallace
He is the sootopolis city gym leader.
Go to the Elite 4, and beat them.
Wallace is the Gym Leader of Sootopolis City so you will be able to verse him once you challenge the Gym.