Juan is the Gym Leader of Sootopolis City's Gym, known officially as the Sootopolis Gym. He left his Gym in the care of his former student Wallace, but returned after Wallace moved up to the position of Pokémon Champion, replacing Steven from previous versions. He gives the Rain Badge to Trainers who defeat him. He specializes in Water-type Pokémon.

His team consists of:

Pokémon Type Lv. Move 1 Move 2 Move 3 Move 4
Wailord Water 90 Ice Beam Bounce Earthquake Brine
Cloyster Water, Ice 91 Rock Blast Supersonic Surf Icicle Spear
Feraligatr Water 92 Aqua Tail Thrash Superpower Bite
Blastoise Water 93 Ice Beam Toxic Surf Unconfirmed
Milotic Water 94 Ice Beam Toxic Surf Disarming Voice
Mega Gyarados Water, Dark 95 Ice Fang Earthquake Unconfirmed Unconfirmed