In Pokémon Sun and Moon, Nanu later provides information on sightings of the Ultra Beasts around Ula'ula. He is also revealed to be a former member of the International Police and Looker's former superior. His codename was 000 (Japanese: 〇〇〇) . During his time with them, he is described as having been an elite officer, on par with Looker. Ten years prior to the events of Pokémon Sun and Moon, he participated in a three-person mission with Looker and an unnamed Faller to track down a Guzzlord, which ultimately cost the Faller her life. After this mission, he and Looker discovered Anabel on the shores of Poni Island.
In Pokémon Ultra Sun and Ultra Moon, after Necrozma unleashes several Ultra Beasts around Alola, Nanu is briefly seen facing a Guzzlord at the Ruins of Abundance. Later, he also appears in Acerola's place at the Aether House during Mina's trial. In Ultra Moon, he challenges the player to a rematch, while in Ultra Sun, he is not in the mood for a battle due to having just been defeated by Hau. In both games, he then gives the player the Purple Petal, the final flower petal of the trial. In these games, it is also revealed that, after the death of Hapu's grandfather, the previous Kahuna of Poni Island, Nanu had been responsible for holding the grand trials on Poni before Hapu was elected as the new Kahuna by Tapu Fini. At one point, he is also seen giving a beginning Trainer his starter Pokémon, with the choice being between three AlolanMeowth with different personalities.
"Seems to me you're trying to get into Po Town. You sure you've thought this through? You'd better be ready if you're thinking of coming in here. Ready to live as Team Skull. Or ready to take on Team Skull."
"You really think you're ready for that?"
Maybe?: "Run back home, kid."
I am!: "I guess everyone has their own reasons. I've got my reasons, too, for doing what I do. I'll have them let you in."
"If you don't make it, I'll be sure your remains at least get back home."
"If only Team Skull could've just kept themselves and their troublemaking to Po Town... Why'd they have to make all this fuss, huh?"
"You there, boy/girl."
"I'm an island kahuna, you know. Battle against me. It'll be a good experience for you if you're really hoping to master the island challenge."
No thanks: "The trip here already wore me out. If you don't want to battle, I'm going home."
OK, I will: "Don't take it too serious, now."
Upon being defeated
After being defeated
"Well, shoot... Of course I already knew you had the heart and the strength to storm Team Skull's stronghold, but I didn't know you were this good. And your Pokémon worked real hard for you. Let me fix your team up for you."
"There. Congratulations or whatever. You've officially finished your Ula'ula trials."
"You've got somewhere else to be, don't you? Try not to destroy the whole place. Oh... And you, boy. Gladion. Tell me... If you're really trying to get stronger as you say, then what're you depending on Team Skull for?"
"Cripes, but I hate this place... It's exhausting climbing all the way up here."
"At least you gave me a good show, though. Guess it was worth coming this far. And the prof did ask me and all..."
"Look, once you've completed all your island trials and done your grand trials, then you've got to do one last thing... The final trial. Basically it's a ceremony, you see? You beat all four kahunas in a row. But things are a little different this year. Now that we're getting a real Pokémon Leaguehere in Alola, too."
"So, boy/girl. I hope you can bother yourself to come along to the base of Ula'ula Island's Mount Lanakila. You remember Tapu Village, don't you? Where the folks were doing construction work? He'll be ready and waiting for you there."
"I suppose I could take you along with me... You want to do that? Come now, with me?"
Yes: "Looks like we're on this journey together, then."
No: "Not many kids make it all the way to the final trial, but there's a handful every year. You won't be able to go easy on this one. These are real battles. No holding back."
Malie City Restaurant
"<Player>, huh? I'm buying, so come join me and eat. Hey, Sensei. Bring me my usual."
"You done? Sorry for talking with my mouth full like that. Heh..."
"... ... ... Mm. Mm-hmm. Good, right?"
"Here. I've got no need for this nonsense."
"See ya, kid."
UB 02 AbsorptionS/BeautyM: The relationship between the two
In Tough Guy Trials!, Nanu received a phone call from Giovanni, who was surprised to learn Nanu had become both a police officer and an Island Kahuna. He asked Nanu to tell him about the Pokémon the people of Alola call "the Blinding One", but the call was interrupted by the arrival of Ash, who came from Melemele Island to challenge Nanu to a grand trial. Believing that Ash wasn't ready to challenge him, Nanu lied, claiming that he was a different person, and he had Ash play with his AlolanMeowth while he went somewhere else. Later, after realizing his kendama had gone missing, Nanu visited Acerola to retrieve it. Acerola forced Nanu to let Ash have a battle with him, which he begrudgingly accepted. During the battle, Ash's Lycanroc went berserk after its fur got dirty, allowing Nanu's Krookodile to swiftly defeat it. When Nanu told Ash that he should just return to Melemele, Ash refused and instead decided to remain on Ula'ula and train for a rematch.
In A Battle Hand-Off!, Nanu was visited by Team Rocket again, who were looking for Ash. He sent them to the the Thrifty Megamart before being visited by Ash and Acerola. Knowing that Team Rocket were after him, Nanu sent Ash to the Abandoned Site as well, saying that if he could defeat the Trainers he found at the Megamart, he would pass his trial. After Ash defeated Team Rocket, Nanu was left with no choice but to accept his challenge for a grand trial.
In the next episode, Nanu battled Ash for his Ula'ula Island grand trial, but only allowed him to use one Pokémon of his own against his three. Under these conditions, Ash chose to use Lycanroc. During the battle, Nanu noticed that Lycanroc using its red-eyed state as a way of boosting its own power and Ash mistaking this for Lycanroc going berserk like it had gone before. Nanu attempted to use this to his advantage by taunting Ash and questioning his skills as a Trainer. Despite these taunts and the numbers being stacked up against Ash and Lycanroc, they eventually managed to win the battle, partially thanks to Tapu Bulu healing Lycanroc with a Sitrus Berry in between the second and third rounds. After being defeated, Nanu considered giving Ash a Darkinium Z, but quickly changed his mind and gave him a Lycanium Z instead.
In the anime, Nanu tends to spend his free time by playing with his kendama. He is also an old acquaintance of Giovanni, though the exact nature of their relationship remains unclear at this time.
Krookodile is Nanu's first known Pokémon. It was first used during Nanu's first battle against Ash and his Lycanroc. During the battle, Nanu had Krookodile deliberately anger Lycanroc, who eventually went berserk after its fur was dirtied by Krookodile's Mud-Slap. Lycanroc proceeded to attack wildly until it was defeated by Krookodile's Crunch.
Krookodile reappeared in Guiding an Awakening!, where it was the first Pokémon Nanu used in his grand trial battle against Ash and Lycanroc, and sought to pull off a similar strategy to the first battle. However, this time, Lycanroc wasn't phased and was able to defeat the Intimidation Pokémon, delivering the finishing blow with a Rock Throw.
Sableye is Nanu's second known Pokémon. It was the second Pokémon he used against Ash and his Lycanroc in Ash's grand trial battle. It used Mean Look to immobilize Lycanroc and inflict damage while Lycanroc could not counter it, but ended up being defeated by the Wolf Pokémon's Stone Edge.
AlolanPersian is Nanu's third known Pokémon. It is larger than most Alolan Persian, with Rotom comparing it to a Totem Pokémon. It was the final Pokémon he used against Ash and his Lycanroc in Ash's grand trial battle and used a mixture of ranged and close quarters attacks to counter Lycanroc. However, after having its Z-Move countered, it ended up being defeated by the Wolf Pokémon's Accelerock, winning the battle for Ash.
In Pokémon Move Specialist Professor Kukui, Hala refereed a battle between Nanu and Olivia in order to test a stage to be used in an upcoming festival at Iki Town. During the battle, Nanu teased Olivia about her romance troubles, which angered Olivia into using her Z-Power. When Nanu retaliated with his own Z-Move, Hala interrupted the battle. The Kahunas decided that they will use the festival to have Alolan youths battle against each other. The strongest participants would travel around Alola's four islands, imitating the island challenge, in order to calm the guardian deities' rage.
Later, Nanu, Hala, and Olivia met at Hala's house, where they decided to make Hapu the next Kahuna of Poni Island. Afterward, Nanu and Olivia decided to head back to their respective islands to assist the Trial Captains fend off the Ultra Beasts that appeared in Alola. Just before Nanu could open the door to leave, a Kartana and Buzzwole burst into the building. Nanu and Olivia offered to help Hala battle the two beasts, but he refused and told them to defend their islands instead.
By the time Nanu made it to Ula'ula, the Celesteela and Guzzlord that had been attacking the island were already defeated by Gladion. After being told that Tapu Bulu never showed up to help, Nanu suspected it and the other guardian deities must be up to something.
This AlolanPersian is Nanu's only known Pokémon. It was first used to battle against Olivia's Lycanroc to test the stage made for an Iki Town festival.
From 木丹 mùdān (gardenia) and 默 mò (silent), which contains the character 黑 hēi (black)
From 木丹 muhkdāan (gardenia) and 默 mahk (silent), which contains the character 黑 hāk (black)
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