Professor Kukui (anime)

Professor Kukui is a recurring character appearing in the Sun & Moon series.

Appearance
Professor Kukui is a young man with a muscular physique, who has dark eyes, black hair, a black man bun and a goatee. He wears a white hat with a rainbow decoration in the front. Professor Kukui also wears glasses with teal frame, a white lab coat with rolled-up sleeves, grey baggy pants with a teal stripe and white ribbon and some teal shoes with white outline. Professor Kukui has a grey ring on his ring finger.

As Masked Royal in SM063, Professor Kukui wears a wrestling outfit; a black wrestling tights with a white trim and has three Poke Ball designs in each sides and white knee-high wrestling boots. He also wears a brown elbowband on his right elbow and two matching black wristbands with a white trim on his wrists. To complete the outfit, he wears a red flame designed wrestling mask with green and light blue with blue designs at the back of his mask.

Personality
Professor Kukui is the teacher of the Pokémon School. He welcomes new students and has certain expectations from them, especially Ash. However, he also lets them help each other, if the situation calls for.

As a disguised Masked Royal and like Professor Sycamore, Kukui is a adept battler as he demonstrated his battling skills against three Trainers in a handicap as well as Ash and his friends with the use of his Incineroar much like how Sycamore battles using his Garchomp.

Due to his secret double-life as both teacher and a Pokemon Royal battler, Kukui is now having a risky life on hiding his double-life from his friends, students, and even his wife Burnet. However, when it comes to critical situations against some powerful opponents outside his Masked Royal identity, Kukui have no choice to reveal his secret identity as the Masked Royal in front of some partners who accompanies him in the situational battles, while telling his presented partners not to tell their other friends who are not present in the said battles about his double life.

Biography
Kukui was the teacher of the Pokémon School. One of his students was Leo, who eventually became a famous DJ.

One day, Professor Kukui encountered a Rockruff. Kukui gave Rockruff some food, who started to follow the professor. Thus, Kukui let Rockruff stay at his house.

Season 20: Sun and Moon
Professor Kukui was visiting his classroom when he encountered Mallow and Ash. He greeted them both and advised the latter to enjoy as much as the school had to offer. Later, he watched as Ash and Kiawe faced Team Skull grunts and was intrigued how Ash dealt with them. After the grunts were defeated, Ash wondered about the Inferno Overdrive move Kiawe's Turtonator used. Kukui explained it was a Z-Move, which are protected by Island Guardians. He also informed him one could obtain such a power, by going through the Island Challenge, which excited Ash. Suddenly, Ash saw a strange Pokémon and described it, which Kukui realized it was Tapu Koko, the guardian of Melemele Island.

The next day, Kukui arrived to class and was surprised that Ash obtained the Z-Ring. Regardless, he asked of the other students to help Ash in the class and heard how Kiawe was teaching Ash about the Z-Moves. Later on, Ash was eating dinner with Professor Kukui, who explained that was the local delicacy, the Alolan Plate. Just as he turned around, Kukui was surprised Ash, as well as Pikachu and Rockruff, ate the dinner. He took a pause and called Mallow, approving of the surprise she and her friends were making for Ash. The next day, he watched as Ash was undergoing through the challenges. Samson asked if he would compete, to which Kukui confirmed, being Ash's last challenge. Just as the fourth challenge ended, Kukui approached Ash and explained he would battle him. Ash was thrilled, but since everyone was hungry, the group went to eat. During lunch, Tapu Koko arrived and snatched Ash's hat, then went into the forest. The group went after Ash and watched as his Pikachu battled Tapu Koko, and how Ash used triggered the Z-Ring to use Gigavolt Havoc. After the battle, Ash decided to take on the Island Challenge, which Kukui approved of. The next day, Kukui gave Ash a Pokédex.

In order to activate the Pokédex, Kukui used a computer to summon Rotom, which entered the Pokédex. Kukui introduced himself and asked of Rotom to serve Ash whenever needed. Ash claimed how awesome Rotom was, a word which Rotom did not understood, so Kukui told Ash praised it for being wonderful. Rotom also went to inspect Pikachu if it bit when his tail was pulled. This caused Pikachu to electrocute it, Ash and Professor Kukui. Kukui and Ash also arrived to class, where others saw the Rotom Pokédex. Kukui also let Ash go to catch Pokédex and asked of his friends to watch over him in the forest.

Kukui went outside his house and informed Rotom, who was explaining about Rockruff, that Ash and Pikachu went off already. Eventually, Kukui came to class and told that the next day Lana will be the teacher for fishing and asked of everyone to bring their fishing rods. The next day, everyone boarded onto Wailmer and Lapras and went to an island, where Kukui watched how his students tried to catch sea Pokémon. After some attempts, Kukui blew a whistle, since it was time for a break. He also watched as Ash and Lana rescued the Wailmer and Lapras Team Rocket stole and was happy that Lana's Popplio managed to emit a balloon to save the Pokémon. Since he was called by his colleagues to help in the lab, Kukui left Ash at his house. He commented his colleages can argue a lot, but admitted he did as well. Later on, Kukui, after reading Ash's note about going to shopping, went to the mall. There, Kukui found Ash and Sophocles and promised to take them at Mallow's family restaurant. The two started running, so Kukui followed them.

Kukui took the class to the principal's office, where they had to choose which egg would they take care of. Kukui explained everyone had to watch over the egg, which was an important lesson they had to learn. Ash decided to take on the Island Challenge to collect more Z-Crystals. Kukui was glad about Ash's determination, noting he had to take on the Island Kahuna's Grand Trial to obtain them. Rotom told Ash had to defeat the Island Kahuna, too, which made Ash comment how fun that sounds. Kukui was surprised, replying such thinking could get Ash hurt. Nevertheless, after everyone finished their meal, Ash, Pikachu and Kukui went to the Island Kahuna, Hala. They noticed an accident on the road, which was caused by Rattata and Raticate. Fortunately, they encountered Hala and his Hariyama, who were collecting the logs. The road was soon cleared and, the next day, Ash, Kukui and Pikachu visited Hala. Ash had a talk with Hala, who asked of Ash how would he deal with the Rattata and Raticate problem without battling. Ash was uncertain, so Hala gave him some time to think of an answer. Kukui admitted he couldn't find a solution, too.

The next day, as Ash was having a meal, Kukui read how yesterday's events were in the news. As the door rang, Ash and Kukui checked and greeted Officer Jenny, who had Gumshoos as her new partner. Jenny promised to give them a ride to Iki Town, but Kukui reminded her to give a certificate to Ash for helping her out clear the Rattata and Raticate. After Jenny dropped them at Iki Town, Kukui and Rotom waited as Hala and Ash had a prayer to Tapu Koko in the Ruins of Conflict. After they returned, Kukui asked if Ash knew how to utilize his Z-Move. Ash confirmed and was told he had only one shot of executing the Z-Move. Once the Grand Trial battle started, Kukui acted as the referee and wondered how Ash would deal with Hala's Crabrawler and Hariyama, due to their impressive strength. He and Hala were in shock how Ash's Pikachu executed Breakneck Blitz and tossed Hariyama off the battlefield, winning the round. With Ash's victory, Kukui decided to throw a party for Ash in which they, along with Hala and Ash's classmates, attended to.

Kukui watched as Ash practiced the Z-Move and advised him to train with Rowlet. He was impressed how Rowlet successfully executed Breakneck Blitz. Ash noted Rowlet was exhausted; Kukui reminded him if he continued to practice, they would fell less exhausted later on. They both greeted Kiawe, who was passing by. Ash was interested in what Kiawe was doing and was told he was running a ranch and had a lot of chores to do. Kiawe replied he had a lot of Pokémon on the ranch, which made Ash interested in visiting his home. Kukui reminded Ash had to practice the Z-Moves, but was convinced that he'd help Kiawe and even battle him, considering he also had the Z-Ring. Thus, Kukui lent Ash the Poké Ride Pelipper and bid him farewell. Kukui and the class went to the beach. Rotom complained its data could be corrupt if it was soaked, but Kukui reminded it was a waterproof Pokémon. Kukui also wished Lillie's egg would hatch soon, to join the class's Pokémon to play with. After Ash and Kiawe returned from swimming, they reported having seen Mareanie, a Pokémon Kukui recalled to be poisonous. As a part of their task, Kukui sent the class to observe the Pokémon habitats. Ash, who encountered Team Rocket, went back to Kukui, who had Lillie grab an antidote to cure Rowlet with.

Kukui and Ash, who bought groceries, went to a restaurant. There, they were greeted by Noa. Kukui explained Noa was the winner of the previous year's Pokémon Pancake race, which Ash wanted to attend to. Noa brought them some pancakes, which Ash and Kukui ate, and even gave some to their Pokémon. On the day of the race, Kukui and Lillie wished their friends luck in the race, as they sat down to watch. The following day, Samson and Professor Kukui came to the class, the former showing the egg, which started to glow. The egg hatched into a red Vulpix, who started playing with the class's Pokémon. Kukui was surprised Lillie's egg, which hatched into Alola Vulpix, hatched at the same time as Samson's Vulpix. To befriend the Alola Vulpix nicknamed Snowy, Kukui gave Lillie a Poké Ball. Snowy touched the Poké Ball and let itself be caught, which made Kukui note Lillie was a trainer from then on. However, Lillie still couldn't touch Snowy, so Kukui asked what kind of a trainer she would be, stating she should find the answer. The next day, Kukui and Samson saw that Lillie befriended Snowy and could touch it as well.

As they came back to the house, Kukui and Ash found Rockruff, who returned to the house, injured. Kukui used a potion to heal Rockruff, stating Rockruff should've been watching over the house while they were gone. As Ash came back home, Kukui installed the cameras around the house to watch over Rockruff. He also placed a doll to have Rockruff play with. Ash and Kukui came outside and watched through the cameras how Rockruff became hostile and attacked the toy, then went out in a direction. Ash and Kukui followed Rockruff, seeing it was actually training with wild Pokémon. They also watched as Rockruff unsuccessfully battled a Magmar, seeing that the former needed some exercise. The two encountered Rockruff, with Ash promising to train it. The following day, Kukui watched as Ash and Pikachu trained Rockruff, who learned how to use Rock Throw. The next night, Ash and Kukui watched as Rockruff managed to defeat Magmar. Kukui and Ash encountered Rockruff again, with Kukui stating Ash should catch it, as Rockruff looked up to Ash. Ash did so and continued to train Rockruff, but this time, Kukui and Rotom participated in the training as well.

Litten was reminded of Professor Kukui, who lived with Ash. Per Stoutland's proposal, Litten had to escort Popplio and Rowlet to Ash to Kukui's house. Kukui was watching an episode of Alola Detective Luki with Rotom. Both were shocked by the episode's plot. As Ash fell asleep, Kukui woke him up to remind him to go to bed, else he'd get a sore back. The next day, Rotom reported to Kukui Ash lost his Electrium-Z and sent Rotom and Pikachu to find it. Kukui was in shock, but recalled that the crystal could be at the school's courtyard, as Ash and Kiawe were fighting there the day before. While Rotom was searching for the crystal, Kukui had the class go outside to train a bit. Eventually, Rotom returned and told the class that the crystal was stolen. Kukui told Rotom its acting as the detective Luki was escalating, but Rotom told the thief was actually Kiawe. After it was discovered to have been in Rotom's wig and the school was over, Rotom showed to Ash, Kiawe and Kukui it could record videos.

After Ash fought against Hiroki and his Mudbray, Kukui informed him that if the trainer grows stronger, the power of the Z-Moves increases as well. Ash decided to have a rematch with Tapu Koko, which made Kukui laugh for his determination. The next day, Kukui watched as Ash and Pikachu took on Tapu Koko. He noted how Pikachu was much faster, due to Sophocles' training. Despite this, he doubted Ash could win the battle, as Tapu Koko was quite cunning and even had its Discharge powered up with Electric Terrain, which was used through Electric Surge ability. Kukui noted that Tapu Koko actually came to fight Ash to check the power of the Z-Move. Like others, Kukui was shocked that Ash dived from a cliff to save Pikachu, but was relieved that Tapu Koko rescued both of them. While Ash and Pikachu were spending time on Treasure Island, Kukui was at his house. He was surprised that Rotom sneezed, as it explained someone must've mentioned its name. After Ash and Pikachu came back home, they told which Pokémon they saw. Kukui identified them to be Wimpod, a scavenger, and Tapu Lele, a Pokémon that was rare to be seen. Ash wanted to encounter Tapu Lele once more, but Kukui told he had to be lucky enough to meet it.

Ash and Rotom came to the house, after encountering Litten. Rotom showed the video of Stoutland and Litten training, which made Kukui remark how their backs were bent, as if they were storing the energy for the attack. Kukui saw that Stoutland actually liked Litten a lot. Since Stoutland was weakened, Ash decided to stay with Litten to keep vigil over Stoutland. Kukui permitted him that, knowing that Litten had some faith in Ash. The next day, Kukui and Ash visited Litten under the bridge on the rainy day, after Stoutland was missing. Ash, who came home, told Kukui about his encounter with Palossand. Kukui was impressed that Ash managed to befriend Litten, who mastered the Fire Fang move, as Litten had a lot of trust in Ash. Seeing it was getting darker, Kukui came out of the house, only to encounter the giant Palossand.

Kukui came with his students to DJ Leo's concert, and wore a wig of Michael's hair, who was a part of the Alola Dugtrio DJ Leo owned. After attending the concert, Kukui and his students were glad about the concert. Just as they were walking home, Rotom was attacked, so everyone followed the figure that stole its wig, which turned out to be Alola Diglett. DJ Leo arrived, commenting they were not supposed to be beyond the fence, but recognized Kukui as his former professor. Later, DJ Leo took everyone into his house, as they all were Kukui's friends. Professor Kukui admitted Leo changed much since Leo was his student. Leo told his story of meeting Jessica, Ashley, and Michael - the Alola Dugtrio. The Alola Diglett the class met before appeared in the house and admired the Alola Dugtrio. Kukui took Rotom's wig and placed it on Alola Diglett, and DJ Leo made it as a member of his band. Everyone was glad and Kukui and the class went away, bidding Leo farewell. The next day, Kukui and Ash were shocked Leo was going out of business, as Jessica, Ashley and Michael left him. Wondering what happened over the night, Ash and Kukui visited Leo, who told them a trio came and offered the Alola Dugtrio some new benefits. To find more out, Kukui, Ash and Leo went after the Alola Dugtrio, finding it was taken by Team Rocket. With the Alola Dugtrio freed and Team Rocket defeated, Leo made another concert, where he had Jessica, Ashley and Michael switch places for the spotlight. Kukui was impressed, seeing Leo got the idea from the Tri Attack the Alola Dugtrio had used earlier.

As Ash was overwhelmed by the homework, he told Kukui he was unable to finish it. Kukui doubted that, reminding Ash he was chosen by Samson Oak to do the presentation for the Visitation Day, to show other parents what they were learning. He gave advice to Ash to at least compare Alola and Kanto Pokémon for the presentation. The bell rang; Ash opened the door, and was shocked that his mother and Mimey came to see him. Delia introduced herself to Professor Kukui, and thanked him for taking care of her son. Kukui admitted it was fun to have Ash around, who was nervous his mom came as well to watch the presentation. After Delia met Ash's Pokémon, Kukui proposed having some tea. Ash went to make some, while Kukui continued talking with Delia. Later, before the presentation, Kukui welcomed everyone they came to the Visitation Day of the Pokémon School and gave Ash the spotlight for the presentation. However, he noticed Ash actually placed Rotom behind his back, who whispered to Ash what he should speak out loud. After Ash was overwhelmed by the info Rotom spoke to him, Kukui took Rotom out, praising it for the knowledge, then told Ash he should continue the presentation, with his own words. Ash spoke about his experience at the school, which impressed Kukui and others, too. Later on, Kukui and Samson saw how Delia, Ash and his friends were cleaning up the mess Team Skull grunts made. Before Delia left to the airport, she asked of Kukui to continue taking care of her son and bid both him and Ash farewell.

Kukui asked of Kiawe and Ash to demonstrate the Z-Moves. They used the Z-Rings for their Turtonator and Pikachu, who executed Inferno Overdrive and Gigavolt Havoc. Since nobody saw other Z-Crystals, Kukui showed the class replicas of all of the Z-Crystals, whose types Rotom identified. Kukui was teaching class when Sophocles was wondering how he'd tell others he was moving far away. When Kukui asked him a question, Sophocles pretended to hear something, while Kukui was surprised he was distracted, even if the subject was about Electric-type, Sophocles' favorite topic. Sophocles thought Kukui knew about Sophocles moving, but didn't want to say anything. Outside, Kukui made a relay race on Tauros. Before the race began, Kukui was surprised that Togedemaru started to cry and tackled Pikachu, though Sophocles claimed that's how Togedemaru expressed her happiness over Pikachu. Ash witnessed Gladion battling a sailor and told this to Kukui. Rockruff started jumping and snuggling around Ash and Kukui, the latter noting Rockruff was happy to have seen Gladion's Lycanroc.

Ash and Kukui were watching a Pokémon Base match. Ash was moved by the match he wanted to play the Pokébase, while Kukui smiled. The next day, Kukui announced to the class they would play Pokémon Base and introduced the teacher, the Pokébase player Oluolu. Everyone was amazed by Oluolu, who had been invited by Professor Kukui to teach the class. Soon, Kukui, Oluolu and Samson became the commentators for the play the class, divided into two teams, were playing. Kukui also watched as Team Rocket joined in the play to obtain Oluolu's autograph, and told Team Rocket was out, since they failed to meet the objectives.

Kukui gave everyone an assignment to pick a partner (by choosing a colored sticks) and exchange their Pokémon. Once everyone exchanged Pokémon, Kukui explained they had to take care of the exchanged Pokémon for two days. At his house, Kukui watched as Ash struggled to bond with Snowy. Two days later, Kukui noted how everyone had good time with the exchanged Pokémon, seeing the assignments he gave were successful. He was also glad to see Lillie managed to touch Pikachu and hug him.

Kukui announced the heroes would go to Akala Island for further lessons. This excited Ash, but Kukui warned him not to rush things over. After the class met Olivia, everyone went on a boat to Akala Island and bid Samson Oak farewell. On their way, Ash and Olivia found a Wailmer, stuck between rocks. Once the class rescued a stuck Wailmer, Kukui continued on and, at evening, reached Akala Island's Pokémon Center. Olivia and Kukui greeted the class, and they went to the stables. There, everyone chose a Stoutland to ride to find a treasure and return it to Olivia for examination. Once everyone chose their Stoutland and Olivia explained the rules, Kukui wished everyone good luck as they rode off. Kukui and Olivia watched how Lillie struggled to approach Stoutland. Kukui encouraged Lillie to continue, and reminded her how she succeeded in touching Pikachu and Snowy. In the end, Kukui showed the class how Lillie was able to touch Stoutland.

Kukui and the class visited the Wela Fire Festival, which he described that it had a 100-year-old tradition. Seeing Olivia was placing a crown on a Pokémon, Kukui explained the crown boosts a Pokémon's power, and is most effective on Fire-type Pokémon. Hearing how Kiawe wished to have his grandfather attend the ceremony, Kukui thought his grandfather was still proud of him. During the ceremony, Kukui watched as a Marowak came and stole the crown. Olivia went to return the crown, but Kukui stopped her, since they needed to calm the people down first. The next day, after the crown was returned, Kukui came back to the festival, and Rotom took pictures of him and the rest of the class. Ash dreamt how Kukui was the referee of the Grand Trial between him and Olivia. Later, he asked Olivia if he could face her in the Grand Trial, but was reminded by Kukui he had to pass the Trial first. Olivia gave everyone cards, showing an ingredient, and Kukui explained their task was to find that ingredient and return to cook the curry. Ash paired up with Mallow, obtained the ingredients and fought against Totem Lurantis, an achievement Kukui praised him for during dinner. The next day, Kukui was the referee for the Grand Trial. He was surprised at Rockruff's behavior, as it bit Ash, but noted the latter had a fiery passion to win. After the battle was over, Kukui declared Ash the winner, even if a moment later Rockruff fainted. Kukui explained to Ash that Rockruff was close to evolving, due to its aggressive behavior.

The next morning, Kukui and others were surprised that Ash was gone. Ash returned with Pikachu, and Kukui scolded him for going off on his own without telling anyone. Ash apologized, explaining that Rockruff was gone. Olivia told it was a normal thing for Rockruff to leave on its own before evolving, but Ash told Rockruff was hurt when he saw him, which surprised Kukui and others. The group went to search; Kukui, Olivia and Ash climbed a cliff, only to find a Yungoos running away with sparkles leaving behind. The trio went to Ruins of Life, where they saw two Lycanroc and Rockruff facing Tapu Lele. Kukui and Olivia watched as Ash confronted Tapu Lele, who made him and Lycanroc fall asleep. The two watched as Tapu Lele absorbed the energies of Lycanroc and Ash, transferring them onto Rockruff, who evolved under the green light of the sun into a strange Lycanroc. Kukui explained that was the Dusk Form of Lycanroc, evolving under that rare phenomenon. The next day, the heroes, Kukui and Olivia sailed towards Melemele Island, and the former thought no matter how much they thought, the Pokémon world stil remained a mystery.

Kukui was teaching class when Mallow explained she had to leave. Kukui remembered she had a TV presentation of her cafeteria, and let her go. Ash wished to go as well, and Kukui promised he could go later on, after the class was over. Kukui announced the class would be going to Kanto. This excited Ash, who was told there would be special guests coming along. The class, along with Samson Oak, made a field trip to Kanto to meet Professor Oak, with Ash's friends Brock and Misty. At the end of the day, Kukui was also present during the reunion party. The next day, the group went to Cerulean City's Gym. Kukui also introduced both Brock and Misty at the newly built Cerulean City Gym to his students. He announced the class would battle the two Gym Leaders, and explained if they win a battle, they would get a Gym Badge. During Kiawe's battle against Brock, Kukui explained about Mega Evolution, a type of evolution that transforms a Pokémon, and wears off after the battle. Kukui also laughed about Ash's strategy when his Pikachu was able to jump the water hurricane using both its Thunderbolt and Quick Attack as electric platforms, during Ash's battle with Misty. After the battle, he told them to keep the memory about the Pokémon battles. Before they returned back to Alola, Kukui thought of opening an Alola Pokémon League.

Season 21: Sun and Moon - Ultra Adventures
At his home, Kukui informs Ash about Professor Burnet on TV, who researched Ultra Wormholes. When Kukui arrived to school, he was surprised to see Ash absent. Ash later arrived with a cloud-like creature the class nicknamed as Nebby. Kukui was also present when Lillie's mother Lusamine, Professor Burnet, Wicke and Faba arrived at his house by helicopter and discussed about the Aether Foundation and the Ultra Beasts. Kukui introduced Ash to Professor Burnet, and claimed the former was a trustworthy trainer to look after Nebby. Before going to school, Kukui reminded Ash they would be working with clay. After preparing themselves, they went to school. Before they came to the school, Kukui noticed Ash was hungry and wanted to buy some donuts, but the two moved on. During class, Kukui had everyone make a sculpture of their out of clay, and made his critique on some of the works. Suddenly, Nebby started using its ability to warp people away, which Kukui noticed to be Teleport. However, Nebby did not return Ash and Pikachu, so the group split to find the two.

Kukui and Ash let Professor Burnet analyze Nebby. After Burnet finished the checkup, Ash thought she could join in the sleepover. Kukui doubted that, since Burnet was a busy person, but Burnet explained she did not have any chores for the day, and agreed in staying for the night. Regardless, Kukui apologized to Burnet for being dragged into this, who did not mind the sleepover at all. After the children played hide-and-seek with Nebby, Burnet and Kukui joined in for a game with Rotom, to mimic Z-Move poses, based on Rotom's dial spins. The game was cut when Kiawe accidentally had Turtonator unleash Inferno Overdrive. Kukui, Sophocles, Lana and Kiawe cleaned the room up, and watched the TV afterwards, featuring a PokéBase match. With others having prepared the dinner, the group sat to eat the food, but Munchlax ate the meals. Without further ado, Kukui went with Burnet to do some shopping for food. Burnet apologized for the lack of dinner to Kukui, who reminded she just helped out. Burnet thanked him, for the children, who were behaving well, were reminding her about her childhood. After everyone had dinner, Kukui briefly spoke with Burnet before going to bed. The next day, Kukui bid everyone farewell, as they went back to their homes.

Later, at school, Kukui was shocked to hear Lillie started to fear Pokémon, including her Snowy. They encouraged her to touch Snowy, and despite her failure, they commended her for trying. Once Lillie returned, Kukui was glad to hear that she got over her fear Pokémon, and could hug any Pokémon. The class went outside, where Kukui skipped over the rope, and explained the trainer and Pokémon need to skip over the rope, to be in sync. He and Rotom rotated the rope, which Ash and Pikachu skipped, with Kukui warning the former not to be careless. Kukui let other Pokémon skip over the rope. The game was stopped when Ash saw Nebby was not in his backpack, and everyone saw Nebby warping Faba away. Kukui and others watched as Ash, Lillie and Gladion boarded on a plane to Aether Paradise.

The next day, Kukui and Lillie's butler, Hobbes, came to the classroom, only to see Lillie was not there, either. The two told Lillie had gone missing, which made Kukui believe they went to the Altar of the Sunne. To think of the next course of action, the group went to Hala, who told them about the legend of the Guardian Deities battling the Ultra Beasts. Bearing in mind Solgaleo could open the Ultra Wormhole, through which Lillie's mother went through, Kukui and the class went to Altar of the Sunne. They arrived in time to help Gladion and Lillie evade the rubble falling on them, and swore to help them in rescuing Lusamine. Kukui believed the Tapu Guardians of Alola, as well as Solgaleo and Lunala, entrusted Ash with Nebby. Before he could continue, he got a call from Professor Burnet. He went to her, and counted on "his partner". He found Professor Burnet and Munchlax overwhelmed by the Hakamo-o and Kommo-o. In order to protect them, Kukui sent Braviary, who used Brave Bird. After the battle, Kukui and Burnet saw the children went through the Ultra Wormhole on their own. Kukui helped Burnet set the equipment, who blasted out a marker, to help the children come back from the Ultra Wormhole. After a while, Kukui and Burnet saw the Ultra Wormhole opening, and were glad the children succeeded in rescuing Lusamine.

After Lusamine had been rescued, Kukui noted the class' friendship has been improved, before going into the classroom as a teacher. At the beach, Kukui was walking with Professor Burnet, who was amazed by Ash's coolness. She wanted to meet the heroes, but Kukui admited he wanted to see her, too. The two noted they had lot in common, and noted they had something on their mind. Burnet let Kukui speak, who was slightly embarrassed. Burnet pointed at Kukui, shouting "I choose you!", while Kukui opened a Poké Ball, showing a ring, which made Burnet blush. The two told Ash and Rotom they would get married. Ash told the news of the marriage at school the following day, and when Kukui arrived at the class, he noticed everyone was unusually calm. One morning, Ash woke Kukui up, who ignored him, since that day there was no school. Ash had Rowlet use Peck on Professor Kukui, who stood up and saw Professor Burnet in a gown. Kukui was surprised, seeing his students made preparations for the wedding. Soon, in a suit, Kukui sent Braviary, as his partner to accompany him to the altar, while Burnet was accompanied by her Munchlax. Kukui walked to the altar with Burnet, with Samson Oak speaking out their vows. Kukui and Burnet placed rings on their fingers, officially becoming a husband and wife. The two had fun at the wedding party, and noted Solgaleo in the sky, proclaiming it was "their Nebby".

With Burnet living with Professor Kukui, the latter had Ash tell his wife that breakfast was ready. After everyone had breakfast, Burnet realized she forgot about the business trip. Kukui promised to help her pack up, while Ash bid them farewell, as he went to school. At school, Kukui had Ash and Kiawe battle until Komala fell off the school's bell tower. Kukui gave some leaves to Komala, explaining to the class it is food that keeps Komala asleep. Samson appeared to explain Komala just had a bad dream. A Jigglypuff appeared and sang its song, making everyone asleep. Jigglypuff became furious and wrote scribbles on everyone's faces but Komala. Kukui, Samson and the class spent time in figuring out why Komala's face was not scribed upon, and found out that Komala just evaded Jigglypuff. Ash went to tell his Pokémon he and the professors were leaving, but Burnet shushed him, while Kukui doubted anything could happen while they went to do some shopping. When they returned, they were surprised to see a washing machine. The delivery man arrived, and explained the error and took the washing machine away. Ash found Rotom on the floor, whom Kukui activated and started behaving strangely. Ash was surprised Rotom behaved unusually, but Rotom dismissed that, thinking that was just Rotom's behavior after rebooting.

Kukui, Ash and Burnet were walking at the beach, and encountered Team Rocket's Mareanie, who was quite sad, which prompted them to took her inside their house. Hala joined the class in travelling to Mount Lanakila on Ula'ula Island, since he wished to have his Crabrawler evolve here. There, Kukui reminded the group Snowy's egg was found here. Due to the cold environment, Hala, Kukui and Kiawe braced themselves to endure the cold, but wore winter clothes once they started sneezing. Rotom spotted an Alolan Sandshrew, and Kukui pointed out lots of Pokémon could not be found anywhere in Alola but here. The group watched as Hala's Crabrawler fought a Sneasel and evolved into a Crabominable. Afterwards, the group went to see the venue for the PokéSled, and Kukui explained they could train for that tournament. He watched others try sledding down, and was concerned when Lillie fell down and nearly injured herself. The next day, he watched the tournament returning to Melemele Island. Professor Kukui was teaching the class about the difference between Kanto Vulpix and its Alolan variant. Suddenly, Komala started ringing the bell, and Samson came in, which made Kukui realize that Lusamine called. Due to this emergency, Kukui lifted the blackboard and opened a passage for the class, who had a mission as Ultra Guardians. After the Ultra Guardians captured Buzzwole, Kukui was with his wife, Lusamine and Wicke. He noted Buzzwole was a strong Pokémon before it went through the Ultra Wormhole. Kukui bought some sweets from a sale, but was surprised that Ash gave all of it to his Pokémon.

Kukui later disguises as the Masked Royal as his wife Professor Burnet and later Ash's Litten recognize his disguise when he battles three Trainers in a handicap using his Incineroar at the Battle Royal Dome. He demonstrates his Pokémon battle skills towards Ash, Kiawe and Sophocles. After Litten is defeated by his Incineroar, he watches Ash and his Pokémon trains Litten heavily. He later battles Ash and his Litten with his Incineroar which proves to be a good match as his Pokémon gives the upper hand. Litten struggles not to be defeated as it evolves into Torracat. Despite its evolution and its Flame Charge became stronger, his Incineroar still defeats it. Although, Torracat made his Incineroar as its rival wanted to fought it in a rematch which Kukui agrees as he and his Incineroar makes his famous pose making everyone gives a hearty laugh. That night, Professor Burnet was impressed on her husband's actions while handling Ash's Torracat who grinned at him as he became tense on his wife's words.

Trivia

 * Unlike other regional Professors from the anime, Professor Kukui is not shown to be giving out starter Pokémon.
 * His wrestling appearance bears a strong resemblance to El Fuerte in the Street Fighter series and the real life WWE superstar Rey Mysterio. His wrestling attire resembles the main outfit worn by the real life WWE superstar Kofi Kingston.
 * In SM081 while teaming up with Ash as Royal Ash, they reference the real life professional wrestling tag team in WWE called The Lucha Dragons which consists of both Sin Cara and Kalisto.