Series-wide: Ash Ketchum | Pikachu | Team Rocket Trio | Team Rocket Trio's Pokemon | Team Rocket Organization
Major Characters: Misty | Brock | May | Dawn | Paul | Iris | Serena | Goh
Original Series: Ash's Pokémon (Kanto, Orange Islands, Johto)
Supporting Cast | Gym Leaders | One-shot Characters
Advanced Generation: Ash's Pokémon (Hoenn) | Supporting Cast | Gym Leaders and Frontier Brains
Diamond and Pearl: Ash's Pokémon (Sinnoh) | Supporting Cast | Gym Leaders | Villains
Black and White: Ash's Pokémon (Unova) | Supporting Cast | Rivals | Gym Leaders | Villains
XY: Ash's Pokémon (Kalos) | Supporting Cast | Rivals | Gym Leaders | Mega Evolution Special | Villains
Sun and Moon: Ash's Pokémon (Alola) | Supporting Cast | Kahunas and Guardian Deities | Aether Foundation | Villains
Journeys: Ash's Pokémon (Journeys) | Supporting Cast | Galar | One-shot Characters
Movies: Movies 1 to 19 | I Choose You! | The Power of Us
The Kahuna of Melemele Island. Ash and Lillie's Z-Rings were made by him, though not directly obtained from him; Tapu Koko stole it from Hala and gave it to Ash, and Lillie found her father's old Z-Ring which he did obtain from Hala.
- Badass Baritone: He has a deep voice and a great deal of physical strength.
- Bait-and-Switch: Played literally; just as Hala was about to award Ash the Fightinium Z, Tapu Koko drops in and replaces the Z-Crystal with an Electrium Z instead. Hala just laughs off the Tapu's latest antics and presents the Z-Crystal to Ash anyway.
- Big Fun: Joins in on Ash's celebration party after the latter wins the Grand Trial against him. Being Melemele's Kahuna, he also sometimes joins in on the class' trips and celebrations.
- Cool Old Guy: He has a grandson and has been Melemele Island's Kahuna as far back as Kukui's childhood.
- Eyes Always Shut: Downplayed. While Hala has his eyes shut most of the time, he is seen opening them on occasion.
- Fat and Proud: As someone who practices Sumo Wrestling, it's a given. He's shown to like the Pokemon move, Belly Drum, and often hits his own stomach to imitate it.
- Foreshadowing: When Tapu Koko snuck into Hala's house to steal the Z-Ring that it would give to Ash, another Z-Ring is shown with a Fightinium Z, the main prize for defeating Hala in his Grand Trial.
- Genius Bruiser: Strongest trainer of Melemele Island, and it's explicitly stated that he's the one who crafts Z-Rings to give to potential trainers, including the Z-Ring Tapu Koko gave Ash.
- Gentle Giant: Hala's Hariyama, much like most other Pokémon giants we know, is pretty laid-back, and even allows Pikachu to play around its arms and belly. But as a kahuna's Pokémon, this one's power should not be underestimated.
- Mighty Glacier: Hariyama is slow but very tough, and hits hard if it can get close enough.
- My Greatest Failure: Holds himself responsible for not teaching Guzma better when he was apprenticed under him.
- Religious Bruiser: In addition to being physically strong and a skilled battler, he's also a devout believer in Tapu Koko.
- Recurring Character: Challenged Ash in the Melemele Grand Trial in Season One, and interacts with the students in several episodes of Season Two.
- Rocket Punch: Just like the game, Hala's All-Out Pummeling Z-Move is depicted as a rapid barrage of punches fired from a distance.
- Stout Strength: Can effortlessly lift and carry several logs when Ash and Pikachu can't even lift one.
- Took a Level in Badass: Much like in the games, Crabrawler evolves into Crabominable when the group visits Mt. Lanakila in SM060.
The Kahuna of Akala Island. Kiawe obtained his Z-Ring from her prior to the beginning of the series, and she also made one for Lana using the Sparkling Stone she found.
- Adaptational Modesty: In addition to her usual revealing outfit, she's also wearing a white short-sleeved jacket. She doesn't seem to take it off even while underwater, and that includes her heels!
- Adaptation Personality Change: Unlike the games, where she was compassionate if a somewhat flat character, here, she's portrayed as clumsy woman who likes Pokémon so much that she kisses them.
- Adapted Out: Unlike the games, her ace in the anime becomes Midday Lycanroc instead of Midnight Lycanroc, most likely to avoid overshadowing Gladion's Midnight Lycanroc. Also, she lacks her Boldore, though she makes up for it by preferring Double Battles and has a Probopass to support her Midday Lycanroc.
- Attack Drone: Her Probopass can deploy its mini-noses to surround the enemy, and use them as Action Bomb for Magnet Bomb. And also as Temporary Platform to invoke Stepping Stones in the Sky for its Lycanroc teammate.
- Bunny-Ears Lawyer: Despite all her quirks, there is a very good reason why Olivia is the Kahuna of Akala Island.
- Christmas Cake: She catches the bouquet at Kukui and Burnet's wedding.
- Colony Drop: Her Z-Move Continental Crush, as used by Midday Lycanroc, where a giant piece of rock is lifted off the ground at a high elevation before dropping it onto its opponent(s).
- Cooldown Hug: She kisses a Tauros to calm it down.
- Dishing Out Dirt: Trains Rock types. Her Pokémon of choice is Midday Lycanroc, with Probopass playing a support role in Double Battles.
- Early-Bird Cameo: Not mentioned by name (and only her foot is shown in a flashback), but Kiawe got his Firium Z from defeating her in battle.
- Friend to All Living Things: She gets a bit enthusiastic about it, but it's clear that Pokémon take to her very quickly. Even Ash's Litten, who doesn't like strangers very much, quickly becomes fond of her.
- The Glomp: She gave a friendly one to Kiawe. This possibly indicates she is very affectionate with those who have defeated her in battle.
- The Klutz: She is not careful, that much can be said.
- Ship Tease: One of a handful of women who have responded positively to Brock's romantic overtures.
- Shipper on Deck:
- Just like Harper and Sarah, Olivia seems to like the idea of Ash getting together with Lana.
- She also supports Kukui and Burnet getting married.
- Slapstick Knows no Gender: While this befalls almost all of the female trainers in the anime to some degree, Olivia, in particular, can barely go a scene without injuring herself comically.
- Squee: Her verbatim reaction to Kukui and Burnet getting married.
The Kahuna of Ula'Ula Island. He gave a Z-Ring to Team Rocket for helping Acerola, and Gladion also presumably got his from Nanu as it's an Ula'ula style one.
- Actually, I Am Him: Tends to not inform people requesting to meet the Kahuna that he is the one they're looking for by lying and creating stories to get out of his duties. Acerola has made efforts to blow his cover to ensure he gets back on track.
- Adaptation Personality Change: Unlike his stoic and aloof game counterpart, this version of him is slightly more prone to smirking and displaying a playful side, if still not particularly invested in being a Kahuna.
- Bait-and-Switch: Presents Ash with a Darkinium Z after he passes his Grand Trial...only to put it away and give him the Lycanium Z instead.
- Bunny-Ears Lawyer: Much like his games counterpart, he is rather apathetic to his role as Kahuna to the point of keeping his status as one secret unless an emergency calls for it.
- Cats Are Mean: Played with. His Alolan Meowth are all fussy roughhouses, but more capable of friendly behavior than the one that duped Team Rocket.
- Combat Pragmatist: Befitting his role as a Dark-type specialist. He even lampshades it during his Grand Trial."Do you really think a Dark type Pokémon user cares about being 'fair'?"
- Dark Is Not Evil: Trains Dark types.
- Hidden Heart of Gold: During the Grand Trial, he suddenly goes from being tired and laid-back to smug and rude. Throughout the fight, he throws every insult at Ash to the point of verbal abuse in the hopes he would overcome it and win. After losing, he ceases the insults.
- Jerkass Has a Point: He was completely right when he told Ash Lycanroc seemed to be in complete control when its eyes were red, but Ash was too afraid of it losing control.
- Kindhearted Cat Lover: Just like his game counterpart, the place he lives at is full of Alolan Meowth. And his ace is still an Alolan Persian.
- Lazy Bum: Again, like in the games, he is not a particularly diligent Kahuna. He keeps his role a secret unless it is called for so as not to deal with annoying services, and seemed rather nonchalant towards giving Team Rocket a Z-Ring when they found out his identity. He even went as far to trick Ash into taking care of his Meowth in the promise of meeting the kahuna.
- Mysterious Past: He met Giovanni sometime in the past and knows of his criminal enterprise. He's willing to give a Z-Ring to Team Rocket despite knowing who they are because they helped rescue Acerola from a wild Gengar.
- Never Smile at a Crocodile: Has a Krookodile with the ability Intimidate.
- Noodle Incident: As a police officer it would make sense for him to be acquainted with Giovanni. But so far that is all the audience knows of their connection. Even then, the two seem to be on mostly good terms.
- Sink or Swim Mentor: In addition to trickery, Nanu is also different from Hala and Olivia in his mercilessness by rigging the Grand Trial in his favor and subjecting challengers through the wringer throughout the entire ordeal.
- Screw the Rules, I Make Them!: Befitting of his mentoring style, he sets up the Grand Trial for Ash to fight a gauntlet of three of his own Pokemon with just one.
- Trickster Mentor: Deliberately takes advantage of a Trainer or Pokemon's Berserk Button during battles, like getting Lycanroc dirty and claiming Ash isn't a good enough trainer and belittling his friendship philosophy. In addition, he deliberately makes the Grand Trial fight lopsided by making him only use one Pokemon against a gauntlet of three.
The granddaughter of the previous Island Kahuna of Poni Island, she would prove herself worthy to Tapu Lele to ascend to the title of Island Kahuna herself. She laters gives Sophocles a Z-Ring.
- Adaptational Jerkass: Partly due to not being Wise Beyond Their Years like her game counterpart. While Hapu in the anime is generally formal and courteous, it doesn't take much to invoke her ire and she has physically taken it out on Ash over him accidentally pressing her buttons.
- Awesome Moment of Crowning: The second half of SM108 features her formal coronation as Poni Island's next Kahuna.
- Berserk Button: More than willing to sic her Pokemon on daikon thieves. She gets even more furious when she finds out the culprits were also Pokemon thieves. She also gets aggressive with Ash after he casually mentions planning to battle Tapu Fini for a Grand Trial.
- Boss-Arena Idiocy: She's a Ground-type specialist. Her battlefield is surrounded by the ocean. This allows Ash to neutralize Mudsdale's immunity to Electric attacks by getting it wet.
- Bratty Half-Pint: Accused Ash of stealing from her daikon field without giving him or anyone else a chance to explain. She later apologizes upon finding out Team Skull were the culprits, but still argues with Ash in the next episode and tries to run him over with her Mudsdale.
- Dishing Out Dirt: Her speciality is Ground types.
- Free-Range Children: Averted. Unlike her game counterpart, she doesn't do any sort of traveling and is stuck in her own home island, which may be the reason why she doesn't behave Wise Beyond Their Years for not having enough outside contact with others.
- Jerkass Has a Point: While she gets a bit too mad that Ash doesn't understand the point of Grand Trials, it's hard not to agree when Ash deliberately goes to the Ruins of Hope and gets imprisoned by the spirit of Hapu's grandfather for battling Kiawe in order to bring out Tapu Fini.
- Jerk with a Heart of Gold: For all her attitude towards Ash, she loves Pokemon and offers to fix Gladion's tattered outfit.
- Minor Living Alone: It's mentioned in her debut episode that she lives alone in a farmhouse separately from her parents.
- Pint-Sized Powerhouse: She's half as tall as Ash, made more striking with the towering Golurk and Mudsdale as her partners.
- Tsundere: Starts to become one of these as she gets used to being around Ash and his friends.
- The Unchosen One: Her late grandfather was the last Kahuna of Poni Island, but Tapu Fini has not accepted her as his replacement yet. That is, until SM108 finally has the Tapu decide she is worthy.
- Wise Beyond Their Years: Deconstructed — she acts far older than she is, but due to growing up on an island full of adults she didn't have any experience interacting with kids her own age until she met Ash's class.
- Adaptational Heroism: They retain some of their Jerkass God tendencies, but are otherwise much more benevolent and helpful than their game counterparts.
- Physical God: The four Guardian Deities are frequently shown to be among the strongest Pokémon in Alola, and each possess considerable paranormal abilities.
Tapu Koko is the Guardian Deity Pokémon of Melemele Island. It gifted Ash with a Z-Ring and the Electrium Z-Crystal.
- Alternate Self: The Guardian Deities of the Alola region are supposed to be Single Specimen Species, however, an alternate timeline/universe of Alola has its own version of Tapu Koko that is shiny. Whether they know of each other's existence is up for debate though.
- Berserk Button: Jovial and benevolent as it is, Tapu Koko does not tolerate being bossed around. It once responded to Gladion's aggressive and pushy behavior with a Death Glare and calmly giving him a verbal cue that essentially meant "shut up".
- Blood Knight: Is very eager to accept Ash's request for a battle anytime, even seeing Pikachu as an opponent worth its time.
- The Bus Came Back: Unexpectedly made a return appearance in JN112 while Ash was in Alola to wish him good luck in the Master's Tournament.
- The Chooser of the One: Gave Ash a Z-Ring and Electrium Z after sensing potential in him. Is also the one that leads him to Nebby, having seemingly sensed Nebby's arrival in the Pokémon world.
- Gives Mallow her Grassium-Z crystal after she makes it a satisfying meal.
- In the climax of Ash vs. Kukui, it gives Kukui the Tapunium-Z to allow him to use Guardian of Alola.
- The Comically Serious: Despite its antics, Tapu Koko isn't the most expressive Pokémon. It's often seen messing with people while remaining completely stoic.
- Defeating the Undefeatable: One of Ash's goals while in Alola is for him and Pikachu is to eventually defeat Tapu Koko in a battle. Two attempts have ended in failure, though Ash did better in the second attempt. Third time was the charm at the Alola League.
- Extra-ore-dinary: Knows Steel Wing.
- The Fair Folk: Is part Fairy-type and knows Dazzling Gleam and Nature's Madness. Its exact motives are unclear at times.
- Final Boss: For Ash and Pikachu at the Alola League, as the last opponent in their exhibition match against Professor kukui.
- The Gadfly: It wakes up a Bewear just to mess with Ash, and steals his hat to lure him into the forest.
- The Leader: It's implied to be this among the other Island Guardians whenever they need to work together.
- Luckily, My Shield Will Protect Me: Its mask allows it to weather Pikachu's Gigavolt Havoc Z-Move completely unscathed. Although the fact that it had to use the mask at all was presented as an achievement on Ash and Pikachu's part.
- No-Sell: Played with; even when boosted by the effect of the Electric Terrain caused by Tapu Koko's Electric Surge, Pikachu's Thunderbolt couldn't scratch it. But when Pikachu used his Z-Move, Tapu Koko was forced to protect itself using its mask, otherwise, it likely would have taken damage from the sheer power of the attack. The second time around, Pikachu manages to knock it against a tree using Gigavolt Havoc, yet even this barely seems to faze it. Pikachu finally proves much more of a challenge in their third battle and ultimately manages to defeat Tapu Koko.
- Oh, Crap!: Before Pikachu's Gigavolt Havoc hits, it briefly has this look. Seeing as it had to use its mask to keep from getting damaged by said attack, it was for good reason.
- Olympus Mons: While it doesn't get caught by Kukui, it has no problems teaming with him as his Pokemon against Ash and Pikachu for one final battle.
- The Rival: Acts as one to Pikachu. Tapu Koko's taken an interest in Ash and Pikachu, and has gone out of its way to battle them a few times.
- Shock and Awe: Part Electric-type and knows Discharge.
- Super Speed: It moves incredibly fast, such that the students can't even follow its movements as it zips around the room.
- A Taste of Power: It gives Ash a Z-Ring and teaches him how to use it, but since Ash hasn't passed the island challenge, the Z-Crystal breaks after the first use.
- The Gods Must Be Lazy: Averted. Despite being capricious, Tapu Koko takes its role very seriously. It has been responsive to Ash's call for aid whenever it happens and has appeared in SM069 keeping watch on Celesteela with the implication of keeping tabs on all potential Ultra Beast activity in Melemele Island.
- Trickster Mentor: It swipes Ash's hat so that he and Pikachu would chase it to a proper battlefield for a Z-Move tutorial. Additionally, the Z-Ring it gave Ash was stolen from Hala, who observes that its antics were probably for more than just random impulse.
- Troll: It likes to mess with people sometimes.
- The Worf Barrage: During the battle between Kukui and Ash, it shows off the Guardian dieties' exclusive Z-Move Guardian of Alola for the first time in the series, only to be overpowered by Pikachu's 10,000,000 Volt Thunderbolt.
- Worthy Opponent: Inserts itself into the end of Ash vs. Kukui as Kukui's final Pokemon, knowing Ash is finally ready for a real battle with it.
The Guardian Deity of Akala Island.
- Adaptation Personality Change: Its heavily implied sadist personality is changed to being playfully rough.
- Comedic Sociopath: It loves to play rough, and sees no problem with taking things way too far.
- The Fair Folk: While it scatters healing scales and is, for the most part, a friendly Pokémon, Its morality is a bit unclear, as it was a bit too rough with Rockruff and doesn't seems to have a concept of limit when it comes to her playfulness and how rough it can get.
- Forceful Kiss: You know how Olivia likes kissing Pokémon? Tapu Lele does the same. Subverted in the case that it used Draining Kiss on the Lycanroc and Ash, but it does give the absorbed energy to heal Rockruff.
- Friend to All Living Things: It's shown in SM037 kissing both Lycanroc owned by Olivia and Gladion on their cheeks. Perhaps that's where Olivia got it from? It actually used Draining Kiss on them and Ash for additional energy needed to heal Ash's Rockruff from previous wounds, still playing it straight as it willingly heals it and a Yungoos before it.
- Healing Hands: Its scales have healing properties. It uses them to heal the wounds Ash sustained while rescuing a wild Wimpod.
- Kick Them While They Are Down: According to Olivia, Tapu Lele is said to willing to hurt other Pokémon when they're unconscious and unable to battle as it likes to play roughly with Pokémon in battles. This appeared to be the case with Rockruff after roughing it up the previous night, but this is ultimately subverted when it saves Rockruff.
- Troll: Much like Tapu Koko, it seems to act maliciously at times. It means no lasting harm though.
The guardian deity of Ula'Ula Island.
- The Gods Must Be Lazy: Tapu Bulu is prone to sleeping most of the time.
- Kamehame Hadoken: How it uses Solar Beam.
- Green Thumb: Its primary type, and it shows off its ability by plowing the land, planting seeds and growing a berry tree over the course of the episode. It later shares the fruits of its labor (Oran berries) with Ash and friends.
- Lazy Bum: Just like Nanu, Tapu Bulu is prone to lazing about and doing nothing unless action is required.
- Sink or Swim Mentor: Deliberately throws Lycanroc into the water to have it overcome its Berserk Button.
- Telephone Polearm: Alluding to some of the dex entries from the games, Tapu Bulu has been shown doing this in the anime by ripping out a tree it planted and using it as a weapon against Lycanroc.
The guardian deity of Poni Island.
- Chekhov's Gun: Appears in the climax of the Nebby arc (after a brief cameo at the start of said arc) to evolve Cosmoem to Solgaleo and upgrade Ash's Z-Ring with the other Tapu. It would not appear again for more than 50 episodes (compared to Tapu Bulu's 23).
- Psychopomp: Gladion mentions that it can let people see the ghosts of those they've lost. The spirits of Hapu's and Kiawe's grandfathers (who were good friends) seem to have hung around the Ruins of Hope since their passing.
- What the Hell, Hero?: Understandably got angry when Ash thought battling Kiawe would be a good way to summon it for a Grand Trial, and gave Kiawe its own trial to get scales from Tapu Lele in order to save him and most of their Pokemon. Played with, since it is heavily implied this was just a Trickster Mentor moment enacted on the behalf of Kiawe's Grandfather's spirit with no real harm intended.