Roy left Mt. Pyre for Rustboro Academy, where he gained attention by capturing a poacher and defeating Roxanne with Litwick. He began using public challenges to build his reputation and Popularity Points, ending with Litwick beating Wu Ming’s Charmeleon.
Roy entered the Rustboro City Rookie Cup with Litwick, won a bronze medal, and inspired Wallace to plan a new contest. As Misdreavus drew closer to him, Roy killed a man who tried to steal his prize and discovered evidence linking the thief to a missing girl.
Roy traded Stunky for an injured Primeape, then discovered Flutter Mane and entered the Spirit World, where Giratina accepted his capture and gave him a scale. After Agatha made Roy her disciple, she taught him that Pokémon training depended on understanding their energy and assigned him an intensive course in breeding and research.
Roy earned his Junior Trainer certificate, began winning matches at the Dome Arena, and trained Primeape to control Rage Fist. After Agatha returned to Kanto, Roy settled into his new villa, formed a connection with Steven, and experimented with Pokéblocks.
Roy investigated Meteor Village with Steven, helped Dreepy say farewell to its dying Dragonite, and found valuable crystals and stones in Meteor Cave. After strengthening his Ghost Power and training his Pokémon, Roy was taken by Giratina to fight Deoxys, then returned to Agatha, who warned him to keep his abilities secret and questioned his unusual Pokéblocks.
Roy honed his Pokéblock-making and Pokémon training, reached 100 consecutive arena wins, and evolved Misdreavus into Flutter Mane with Booster Energy. He helped Rustboro Academy win its exchange match against Jubilife Academy and received a Snorunt Egg, while Agatha sent Gengar and Arbok to Kanto.
Roy helped Cynthia investigate Hoenn’s ancient peoples, welcomed Snorunt and evolved Dreepy into Drakloak, then joined the defense of the Safari Zone against the Hunter Organization. He caught the hungry shiny Palossand and ended the stretch searching for another faint Ghost-type aura.
Roy and Cynthia visited Mt. Pyre and Sootopolis, where Roy took on Wallace and drew Rayquaza’s attention during the festival. After defeating Hunter J, Roy strengthened his team and prepared for the Edge Cup, while his relationship with Cynthia grew closer.
Roy and his friends entered the Edge Cup, where Roy’s Pokémon advanced through the qualifiers while Primeape’s struggle to master a mysterious black energy put him and Roy at risk. Roy, Wallace, and Steven all qualified for the main tournament, as Tobias established himself as a formidable contender with Darkrai.
Roy evolved Primeape into Annihilape and defeated Tobias, then advanced through the Edge Cup with a full-team sweep of Cade using Misdreavus’s Bond Evolution into Flutter Mane. The tournament continued as Mega Evolution became a subject of regional scrutiny, while Agatha waited to confront Roy after his semifinal victory.
Roy won the Edge Cup, challenged Drake, and then helped stop a Pokémon riot in Lilycove City by returning Vespiquen’s stolen Egg and defeating Hunter X. He helped the displaced Primeape tribe settle near the Beedrill and Combee, while Annihilape inherited their Leader’s Aura.
Roy sailed to Kanto with Agatha, where he clashed with Clair, befriended Giovanni, and gained a Gengarite that Agatha used to Mega Evolve Gengar. In Pallet Town, Roy helped Professor Oak study Annihilape and met Ash, Gary, and Serena at the laboratory.
Roy captured Ancient Gengar, settled into Professor Oak’s summer camp, and helped Oak investigate the ruins. When Professor Kukui arrived to discuss Alola’s first Pokémon League, Roy proposed a plan for building its institutions and choosing a Champion.
Roy tested Ancient Gengar’s Dynamax power, met Marshadow, and gained the messenger as a teammate after refusing Ho-Oh’s offer to become the Rainbow Hero. After summer camp ended, Roy’s Drakloak evolved into Dragapult, and Roy and Agatha arrived in Saffron City, where Roy began a battle against Bado’s Mega Lopunny.
Roy advanced his Breeder and martial arts training while Rose’s effort to harness Galar’s hidden energy freed Eternatus. Giratina took Roy to Galar to confront a newly awakening threat, as Eternatus overpowered the trainers’ Dynamax Pokémon.
Roy helped Giratina defeat Eternatus, then used an Eternatus fragment to create Max Soup and test Gigantamax. After defeating Reiji and graduating from Bruno’s dojo, Roy left to continue his journey and help his Pokémon evolve.
Roy earned his Top-level Breeder status, faced Lance in a Dynamax exhibition, and won Vermilion Gym’s highest-difficulty challenge. He boarded the S.S. Anne for Johto, where he uncovered a mysterious disturbance and lured Dhelmise onto the deck.
Roy resolved the S.S. Anne's ghostly attacks, gained Dhelmise and Dragalge, and evolved Lampent into Mega Chandelure while helping Marshadow with Ho-Oh's flame. After the Safari Zone egg hatched into a mutated Little Absol, Roy reunited Annihilape with his forest tribe and prepared to take Phoebe to Sootopolis City.
Roy reunited with Wallace and Steven in Sootopolis, battled Lysandre, and fought off Team Aqua’s attack on his journey to Mt. Pyre. After returning Phoebe to her grandparents, Roy received the Red Orb back and left with a mysterious shadow in his own.
Roy registered for the Egg Cup, won the Goldenrod Gym badge, and met Whitney’s timid ghost, Mimikyu, at her family’s ranch. After discovering two Primeape tribes had been taken, Roy followed the clues to a group of impostor rangers connected to the Wazik Family.