Ep. 138: Final Rivals!
Aired on September 8, 2019

138
Delia, Mimey, and Professor Oak visit Manolo to support Ash before the championship. Wild Meltan appear and evolve into Melmetal with their collective effort. The following day, Ash faces Gladion in a three-on-three Finals match. Gladion leads with Silvally, while Ash introduces Melmetal for its first battle. After Silvally defeats Melmetal, Ash sends out Pikachu, who successfully defeats Silvally. Gladion then deploys Lycanroc, which utilizes moves that are unexpected for its species.
Episodes
- Ep. 134 · The Road to the Semi-Finals!
- Ep. 135 · The Final Four!
- Ep. 136 · Gladion defeats Kiawe with Silvally while Guzma faces a shocking defeat against Ash
- Ep. 137 · Ash faces Guzma's Golisopod after Torracat's defeat, revealing the secret to Guzma's undefeated record.
- Ep. 138 · Final Rivals!
- Ep. 139 · Gladion's Zoroark and Pikachu fall, leading to the final Lycanroc battle for the Alola League title.
- Ep. 140 · Ultra Wormhole Opens During Alola Championship Crowning Ceremony
- Ep. 141 · The Masked Royal Identity Revealed as Kukui in a Champion Battle
- Ep. 142 · A Full Battle Bounty!