• English / United States: Meloetta
• Japanese / Japan: メロエッタ
• Japanese (Romanized) / Japan: Meloetta
• Japanese (Trans) / Japan: Meloetta

Since ancient times, people have competed for Meloetta to get the power to unlock the Reveal Glass located in a temple as Meloetta is the only entity able to dissolve the seal that protects the Reveal Glass. For many generations, this ability was restricted to the leader of the Guardians. However, in pursuit of this power, evil people continued to fight incessantly. Feeling that it was its existence that caused the fighting, Meloetta sank the temple and hid itself together with the guardian ancestors. Meloetta's song is necessary in order to obtain the Reveal Glass which is why Team Rocket went after Meloetta.

Ridley and the current day guardians lived in seclusion deep within a forest in the Isshu region with Meloetta. One day the place was discovered and while he wasn't looking, Meloetta was captured by a group of villains. Since ancient times, he and his people have been called the Guardians, which are a group of people that guard Meloetta. The Guardians possess the power to sense Meloetta. He had been searching for a long time to find it after it was taken by the Rocket gang.

Ash Ketchum was in the storeroom when Meloetta was hiding to get away from Team Rocket who were still chasing it. A large piece of wood was about to fall on it and Ash Ketchum rescued it from getting injured. Meloetta began to trust Ash Ketchum from that point on but it wasn't till they met again in East Isshu when Shirona almost ran it over on the road.

Ash's Oshawott and Dawn's Piplup Rivalry

Ash's Oshawott and Dawn's Piplup both fell in love with Meloetta and the two of them began a rivalry to win the affection of Meloetta. Ash's Oshawott would often come out of its PokéBall when it could tell that Dawn's Piplup was trying to take advantage of a situation. Even though the two of them often argued, they found a common ground and became friends after Meloetta left.

Operation Tempest

Giovanni arrived in East Isshu to kick off the final stage of Operation Tempest. The mission was to use Meloetta to unlock the Reveal Glass. The Rocket Gang was able to find that temple, capture Meloetta and unlock the Reveal Glass by using Meloetta and attempted to conquer the entire Isshu region. The Reveal Glass was operated by Giovanni who used it to summon Landlos, Tornelos and Voltolos. He was not able to control them for long as Ash Ketchum and his friends intervened and stopped him from controlling the trio and holding Meloetta captive.

After the events with the temple and team Rocket, Meloetta was reunited Ridley and they parted ways with Ash Ketchum and his friends. Ridley hoped he and Meloetta could return to their quiet life.