Milotic debuted inThe Great Eight Fate, where it was first used in a water exhibition. It also won in a battle againstTeam Rocket. Milotic is Juan's strongest and most experienced Pokémon, having helped Juan in his career as aCoordinator by winning manyPokémon Contests years ago. With the help of Milotic, Juan was able to win theGrand Festival, earning theRibbon Cup and the title ofTop Coordinator. Nowadays, Milotic uses all of its experience against challengers who come to theSootopolis Gym.

Juan used Milotic as his final Pokémon in the Gym battle againstAsh. With its elegant grace and power, Milotic was able to gain the upper hand against Ash. It defeated Ash's Swellow with Hydro Pump and Twister, then put up a good fight against Pikachu thanks to its ability to Recover from Electric attacks. It was also able to draw in Pikachu'sThunder with Iron Tail. However, Pikachu pulled Milotic below the water and used Thunder to defeat it, thus earning Ash theRain Badge.

Milotic's known moves areTwister,Hydro Pump,Iron Tail, andRecover.

Luvdisc first appeared inThe Great Eight Fate!, where it put on a dazzling performance with Juan's other Pokémon. It was later captured byTeam Rocket, but was freed.

During the second round of his battle with Ash, Juan choseLuvdisc againstGrovyle. Luvdisc started out with Water Pulse, but Grovyle dodged in time and countered withLeaf Blade. Luvdisc, however, was fast enough to dodge that attack and used Sweet Kiss, confusing Grovyle. Grovyle hit itself in its confusion, and Luvdisc finished it off with Water Gun, which resulted in a loss for Grovyle despite the type advantage. Ash switched back to Corphish. The two Pokémon kept dodging each other's attacks until Luvdisc dived underwater and Ash ordered Corphish to hit the water withCrabhammer. Corphish's attack sprayed the battlefield with water, simulating heavy rain, which activated Luvdisc's Ability, Swift Swim, allowing it to move even faster than before. Eventually, Corphish managed to hit Luvdisc with anotherCrabhammer, taking it out of the battle.

Luvdisc's known moves areWater Pulse,Sweet Kiss, andWater Gun, and its Ability isSwift Swim.

Sealeo made a cameo during its first appearance inTeam Rocket's electric net, but was eventually freed.

In thenext episode, Sealeo was one of two Pokémon Juan used in the first round of his battle with Ash. Sealeo used Blizzard onPikachu andSnorunt, but Snorunt countered it withIcy Wind. It then tried to hit Pikachu with Aurora Beam, but Pikachu dodged. When Ash switched Snorunt forCorphish and attacked withBubble Beam, Sealeo dived into the water and tried hitting Pikachu again, but once again, Pikachu dodged. After Sealeo was left alone against both of Ash's Pokémon, it used Ice Ball repeatedly and almost won the battle, but was eventually taken down by Corphish'sCrabhammer.

Sealeo's known moves areBlizzard,Aurora Beam, andIce Ball.

Seaking battled alongside Sealeo in the Double Battle against Pikachu and Snorunt. It used Horn Drill to reflect Pikachu'sElectric attacks at Snorunt. When Ash's Pokémon were attempting to attack from up close, Seaking hit Snorunt with Hyper Beam, forcing Ash to switch Snorunt forCorphish. Seaking then dived and used Horn Attack, but Corphish caught it by the horn. Seaking followed up with Horn Drill, damaging Corphish, but was then hit by Pikachu'sIron Tail and fainted.

Seaking's known moves areHorn Drill,Hyper Beam, andHorn Attack.

The fourth Pokémon Juan used against Ash wasWhiscash, who easily defeated Ash's Corphish with Surf and Rock Smash. Ash then choseSwellow, but Whiscash grabbed it and used Tickle followed by Hyper Beam. Juan thought he won the round, but Swellow recovered and usedAerial Ace, even after Whiscash dived underwater. After missing another Hyper Beam and getting hit by another Aerial Ace, Whiscash was unable to battle.

Whiscash's known moves areSurf,Rock Smash,Tickle, andHyper Beam.

Juan'sGorebyss andSeadra were Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses them in Gym battles. They were used to make a dazzling performance untilTeam Rocket attempted to capture all of the Pokémon with an electric net. Other Pokémon helped to set them free.

Gorebyss's known moves areWater Gun andSafeguard.
Seadra's only known move isWater Gun.

Juan'sAzurill was a Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses it in Gym battles. It was one of Juan's Pokémon used to make a dazzling performance untilTeam Rocket attempted to capture all of the Pokémon with an electric net. Other Pokémon helped to set them free.

Azurill's only known move isWater Gun.

Juan'sGoldeen andWailmer were Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses them in Gym battles. They were used to make a dazzling performance untilTeam Rocket attempted to capture all of the Pokémon with an electric net. Other Pokémon helped to set them free.

Their only known move isWater Gun.

Juan'sCorsola was used by Juan in theSootopolis City Water Exhibit, but it is unknown if he uses it in Gym battles. It was one of Juan's Pokémon used to make a dazzling performance from the water untilTeam Rocket attempted to capture all of the Pokémon with an electric net. Other Pokémon helped to set them free.

Corsola's only known move isBubble Beam.

Juan'sBarboach was a Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses it in Gym battles. It was one of Juan's Pokémon used to make a dazzling performance from the water untilTeam Rocket attempted to capture all of the Pokémon with an electric net. With Juan'sGorebyss andTentacruel, they were able to break through and help the others escape.

Barboach's known moves areWater Gun andMud Sport.

Juan'sChinchou was a Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses it in Gym battles. It was one of Juan's Pokémon used to make a dazzling performance from the water untilTeam Rocket attempted to capture all of the Pokémon with an electric net. Other Pokémon helped to set them free.

Chinchou's only known move isBubble Beam.

Juan'sPelipper and twoWingull were Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses them in Gym battles. They were used to make a dazzling performance untilTeam Rocket attempted to capture all of the Pokémon with an electric net. Other Pokémon helped to set them free.

Their only known move isWater Gun.

Juan'sMasquerain was used by Juan in theSootopolis City Water Exhibit, but it is unknown if he uses it in Gym battles. It was one of Juan's Pokémon used to make a dazzling performance from the air untilTeam Rocket attempted to capture all of the Pokémon with an electric net. It was able to break through and help the others escape.

Masquerain's only known move isBubble Beam.

Juan's multipleStaryu were Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses them in Gym battles. They were used to make a dazzling performance untilTeam Rocket attempted to capture all of the Pokémon with an electric net. Other Pokémon helped to set them free.

Staryu known moves areWater Gun andBubble Beam.

Juan's multipleTentacruel were Pokémon Juan used in theSootopolis City Water Exhibit, but it is unknown if he uses them in Gym battles. They were used to make a dazzling performance untilTeam Rocket attempted to capture all of the Pokémon with an electric net. With Juan'sGorebyss andBarboach, they were able to break through and help the others escape.

Tentacruel's only known move isBubble Beam, and one of them also knowsMirror Coat.

Juan'sSpheal was seen as one of Juan's Pokémon caught inTeam Rocket's electric net. With the help of the other Pokémon, it was able to get out.

None of Spheal's moves are known.

Kingdra is Juan's first known Pokémon. It was first used to show Ruby and Sapphire how the battle between Groudon and Kyogre was going with a Water Screen. When Ruby attacked Juan to test if he really was Wallace's master, Kingdra was used to defend its Trainer, which quelled Ruby's doubts. When the time had come for Ruby and Sapphire to leave, Kingdra shot water fireworks into the air to signal when it was time for them to exit.

Kingdra's only known move isWater Pulse.

Juan owns twoLuvdisc. They were mostly seen observing as Juan continued Ruby and Sapphire's training.

None of Luvdisc's moves are known.

Similar to his apprentice, Juan owns aClamperl as shown on a cover of a volume of theRuby & Sapphire arc.

None of Clamperl's moves are known.