First you need to awaken rayquaza from the sky pillar on route 131 which stops the fight between kyogre and groudon then the doors of the gym are open to you
you have to distory the door
Wallace
hes in sootopolis city gym
Sootopolis City. The gym leader is Juan.
Emerald: He is the champion of the Elite Four; Juan is the Sootopolis gym leader. Sapphire/Ruby: He is the gym leader of Sootopolis.
He is at Sootopolis city...you can battle him only after the sootopolis incident
Go to Sootopolis.
you go to sootopolis city
well i forgot
they are in sootopolis awesome bye
The Pokemon league!
I get my 8th badge in Sootopolis gym.