Series-wide: Ash Ketchum and Pikachu | Team Rocket Trio | Team Rocket Organization
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
Sinnoh Gym Leaders
- Voiced in Japanese by: Masataka Azuma
Voiced in English by: Craig Blair
Voiced in Latin American Spanish by: Ricardo Mendoza (season 11), Ignacio Casas (season 12)
- Adaptational Badass: Played with. His team in the anime is largely the same as in the games but after Ash loses to him, his Cranidos evolves into Rampardos to make him an even tougher threat. On top of that, his Geodude easily beats an Azumarill, when in the games such a matchup would end in an easy loss for it, but then loses to a super-effective Brick Break, which is pretty in line with the games.
- Calling the Old Man Out: He accuses his father of abandoning his family for nothing more than his love of fossils, and also preferring defense to offense.
- Elemental Powers: Roark specializes in Rock type Pokémon.
- Fiery Redhead: More of the "fiercely passionate" variety than "hot-headed", generally, except for when it comes to Byron...
- Guest-Star Party Member: Sort of - four episodes straight in Oreburgh City, and then a significant role for another two at Canalave City.
- Just a Kid: His father dismisses his arguments using this line. In Byron's words, "You wouldn't know a fossil if it hit you on the head!"
- Missing Mom: His mother isn't seen, but Roark mentions asking his dad to come home for the anniversary of their marriage, implying that she's still around.
- Royals Who Actually Do Something: Actively involved in the mining duties of his city, and later stops Team Rocket when dealing with their theft of the Fossil Restoration machine.
- Unstoppable Force Meets Immovable Object: He challenges his father to a battle to resolve this, and champions the force of Rampardos against Byron's immovable Bastiodon. No winner is clearly determined.
- Use Your Head: Rampardos' Headbutt and Zen Headbutt.
- Volumetric Mouth: When arguing with Byron in "Ancient Family Matters".
- Voiced in Japanese by: Chieko Honda
Voiced in English by: Lara Star Rigores
Voiced in Latin American Spanish by: Isabel Romo
- Bare Your Midriff: Her outfit exposes her belly.
- Bunny-Ears Lawyer: Her love of grass type Pokémon can be eccentric and she actually pounces on James' Cacnea and Carnivine despite his attempts at an ambush. However there is no mistaking her skills as a gym leader.
- The Bus Came Back: In DP055.
- Early-Bird Cameo: Appears briefly during Cheryl's three-part arc, in DP031 ("The Grass-type is Always Greener") before having a full introduction in Eterna City.
- Elemental Powers: Gardenia specializes in Grass type Pokémon.
- Hypocritical Humor: "The crooks were using Grass-type Pokémon, huh? They've got some nerve! Those jerks!" By the end of her appearance, she's taking care of a Grass-type that one of the crooks in question gave to her.
- Go-Karting with Bowser: Upon seeing James' Cacnea again, she asks it to give her a massage with Pin Missile.
- Luminescent Blush: This is her reaction when Dawn asks her if she's been with Nando.
- No Sense of Personal Space: She just can't resist hugging every Grass-type she sees.
- Odd Friendship: With James, whom she could never see as an enemy due to his use of grass types.
- Reasonable Authority Figure: During A Secret Sphere of Influence!
- Ship Tease: With Nando. She stands up for him when he's accused of stealing the Adamant Orb, and later quotes a bit of reflective poetry similar to his style that prompts Dawn to (correctly) deduce that they've spent time together.
- She also has some arguable tease with James - or if not that, then borderline with Cacnea (though she's fairly goo-goo-eyed about Grass-types in general). Either way, she's inordinately nice to him in DP054 despite knowing full well of his and his friends' attempted theft of the Adamant Orb.
- Too Kinky to Torture: She actually seems to enjoy getting attacked by grass-type Pokémon. James' Carnivine bites down on her head and she really likes it. She also has Cacnea use Pin Missile on her back like a massage.
- Badass Adorable: She's the first Gym Leader from whom Ash wins a badge without outright defeating her (they tie, but she considers his performance worthy of the Cobble Badge). Not to mention her battle with Dawn. Reggie even notes the result of her battle with Paul might have been very different if she'd been at the top of her game when they faced off.
- Badass Normal: When you're a human and you can deflect an Aura Sphere with your bare hands...
- Break the Cutie: Losing to Paul, then being on the receiving end of his painful "The Reason You Suck" Speech. Ouch.
- Brick Break: Machoke's attack.
- Calling Your Attacks: She even motions whenever her commands Lucario to use Aura Sphere.
- Elemental Powers: Maylene specializes in fighting type Pokémon.
- Foil: Interestingly, with Misty, despite the two never meeting. Both are relatively new Gym leaders, but while Misty is assertive and aggressive, Maylene has some confidence issues that bleed into her performance as a gym leader before she overcomes them. To compound it, both of them are voiced by Rachael Lillis. note .
- Guest-Star Party Member: Similarly to Roark, she has a decent four-episode arc of bonding with Ash and his friends (especially Dawn).
- Royals Who Actually Do Something: In her final appearance, she sensed the disturbance caused by Team Galactic stealing the Veilstone Meteorites and hurried over to stop them.
- Ship Tease: With Reggie.
- 10-Minute Retirement: Though she'd considered making it permanent, her Lucario (and everyone else for that matter) wouldn't hear of it.
- You Gotta Have Blue Hair: Her hair is bright pink.
- Voiced in Japanese by: Tetsu Inada
Voiced in English by: Michael Alston Baley
Voiced in Latin American Spanish by: Raúl Anaya
Voiced in European French by: Jean-Daniel Nicodème
- Acrofatic: Don't let that spare tire on his waist fool you. He's a wrestler with Stout Strength, after all.Ash: For a big guy, that Wake can move!
- Boisterous Bruiser: He's a wrestler, hero, and a Gym leader rolled into one.
- Curb-Stomp Battle: Regarding Ash's victory over him; while Wake doesn't just fall and puts up a good battle, this is the first proper time Ash has won a Gym Match without a single Pokémon fainting (discounting the double-battle with Tate and Liza in Hoenn).
- Elemental Powers: Crasher Wake specializes in Water type Pokémon.
- Hidden Depths: Like everyone else in his town, he is fond of Croagunk.
- Large Ham: complete with introductions!I'M...Crasher Wake! (laughs)
- Razor Wind: Floatzel's attack.
- Worthy Opponent: His Floatzel quickly became this to Buizel - becoming even important to the latter's Character Development.
- Voiced in Japanese by: Kikuko Inoue
Voiced in English by: Bella Hudson
Voiced in Latin American Spanish by: Georgina "Gina" Sánchez
- Back for the Finale: Or rather, back for the Sinnoh Grand Festival.
- Big "OMG!": In Coming Full Festival Circle!
- Big "NO!": Comically does this whenever Ash KO's one of her Pokémon.
- Elemental Powers: Fantina specializes in Ghost type Pokémon.
- Casting a Shadow: Mismagius' Dark Pulse.
- Green Thumb: Mismagius' Magical Leaf.
- Playing with Fire: Drifblim's Will-O-Wisp.
- Poisonous Person: Gengar's secondary type.
- Psychic Powers: Mismagius' Psybeam and Psywave, Drifblim's Hypnosis and Psychic, and Gengar's Hypnosis.
- Wind from Beneath My Wings: Drifblim's secondary type.
- Genki Girl: The woman can barely stand still, she's always dancing.
- Gratuitous English/Gratuitous French: In the Japanese and English versions, respectively.
- Surprisingly Good French: In the dub, her accent and pronounciations are actually quite good, as a skilled French speaker can attest to.
- Improbable Hairstyle: No one in the world has her overly pompous hairdo.
- Pimped-Out Dress: Her purple outfit that she uses for contests and gym battles.
- Recurring Character: Fantina's appearances are the most sporadically spread out of all the Sinnoh Gym Leaders.
- Running Gag: Never in her gym whenever she was needed.
- That One Attack: In-universe, after his first match with her, Ash would spend the next few episodes before their rematch contemplating how to get past her team's Hypnosis.
- Adaptation Personality Change: Byron is a more serious character in the games. Here, he's as hammy as Crasher Wake and his obsession with fossils and digging holes is used for comic relief.
- Badass Baritone: He has a deep, gruff voice, courtesy of Dan Green.
- Daddy Had a Good Reason for Abandoning You: Though his demeanour suggests otherwise, this is actually true - he wanted Roark to become his own man rather than living under his father's shadow, hence why he left Oreburgh Gym in his hands.
- Disappeared Dad: A major gripe Roark has with him is how Byron apparently ran off to Canalave City and left Roark to fend for himself.
- Dishing Out Dirt: Bastiodon's primary type (Rock) and Steelix's secondary type (Ground).
- Elemental Powers: Byron specializes in Steel type Pokémon.
- Energy Ball: Bastiodon's Flash Cannon.
- Horrible Judge of Character: Played for laughs when he reasons that Team Rocket can't be bad, because they dig holes beautifully.
- Hot-Blooded: You don't get much more hot-blooded than having explosions go off behind you while yelling about how much you love things. Dan Green, ladies and gentlemen.
- It's All About Me: Roark accuses him of this for dumping the position of Oreburgh Gym Leader on him so he could go hunt for fossils in Canalave City.
- Jerk with a Heart of Gold: He is sometimes harsh with his son, but he does genuinely care about him.
- Large Ham: A running gag is explosions going off in the background when he yells about how much he loves something.
- Ludd Was Right: Played for Laughs. When he finds out Team Rocket stole his fossils and escaped through a giant hole in the exhibition floor, he entreats them to stop using the machines and dig their holes by hand.
- Mad Libs Catch Phrase: "I LOVE [something]!!!"
- Memento Macguffin: His most treasured fossil - a fossilized Sunkern leaf which Roark found and gave him as a young boy.
- No Indoor Voice: He's always shouting about how much he loves things.
- Single-Issue Wonk: He loves fossils, digging holes, and nothing else. Well, except maybe his son.
- Skewed Priorities: When confronting Team Rocket over his stolen fossils, his first order of business is to...compliment them on the perfectly round hole they dug and then tell them they should dig holes by hand instead of using machines.
- Stone Wall: His battle style primarily revolves around defense, and his main Pokémon, Bastiodon, has high defensive stats and a head shaped like a castle fortress. He demonstrates by having Bastiodon use Iron Defense to protect his son's Rampardos from a barrage of rocks hurled by Team Rocket's mech.Byron: Now see why I always talk about the value of a good defense?!
- Tunnel King: With nothing but the highest respect for others who share the same talent.
- Use Your Head: Bastiodon's Iron Head.
- Affectionate Nickname: Zoey refers to her as "Miss Senior"
- Badass Armfold: Her Abomasnow has this as her default pose. Her arm-fold looks more badass when she uses long-range attacks while doing it, and there is also a scene where Abomasnow and Candice do it side by side. However, once Abomasnow loses her cool, she quickly discards that habit for the rest of the fight.
- Bare-Fisted Monk: Her Medicham is a Fighting-type Pokémon, which is odd since she specializes in Ice-types.
- Catchphrase: She is oddly fond of kiai. No, not the shouting. The word itself.
- Curb Stomp Cushion: Ash's Gym battle against her starts out with Ash bulldozing her team up until Snover takes down Gliscor, before itself being easily dispatched by Chimchar. Then Abomasnow comes out and returns the favor, taking down two of Ash's remaining Pokémon in quick succession.
- Elemental Powers: Candice specializes in Ice type Pokémon.
- Friendly Enemy: This is actually how she thinks rivalry should function, and is therefore pleased by how Dawn and Zoey help and learn from each other. By extension, she finds herself both shocked and baffled by Paul and his hostility towards Ash.
- Genki Girl: She's very friendly and excitable.
- Hot-Blooded: If her always going on about Kiai is any indication.
- I Am Not Left-Handed: Despite specializing in Ice-type Pokémon, she packs the Psychic/Fighting-type Medicham.
- Mighty Glacier: Candice's Abomasnow is very powerful, easily defeating half of Ash's team when they try to attack it head-on. It's also very slow, meaning that Chimchar was able to outmaneuver it and take it down.
- Voiced in Japanese by: Hirofumi Nojima
Voiced in English by: Eli James
Voiced in Latin American Spanish by: Javier Olguín
- Adaptation Dye-Job: His hair is a dirtier shade of blond.
- Brilliant, but Lazy: He has a long-running win streak; by the time Ash shows up, he's grown so bored that he's giving away badges for free.
- Broken Ace: He is the strongest gym leader in Sinnoh and had an unbreakable winning streak...which caused him depression and resorting to having an interest in other things and nearly abandoning his duty as a gym leader.
- Doppelgänger Spin: Luxray's Double Team.
- Elemental Powers: Volkner specializes in Electric type Pokémon.
- Gadgeteer Genius: Became more interested in technology to make up for being unable to enjoy Pokémon battles.
- An Ice Person: Electivire can use Ice Punch, an Ice-type attack, to counter Grass-Types and Ground-Types who usually have an advantage over Electric-Types.
- Jacob Marley Warning: He is the representation of what would have happened to Ash if Paul had kept Chimchar in the season 10 episode "Glory Blaze", and had not snapped out of his funk in the season 12 episode "Uncrushing Defeat".
- Man Bites Man: Luxray's Thunder Fang.
- Playing with Fire: Electivire's Fire Punch, a Fire-type attack to counter Grass-Type Pokémon who usually resist Electric-type moves.
- 10-Minute Retirement: A very justified one - just as his Gym Battle with Ash got underway, Team Rocket attempt to steal Sunnyshore Tower, in the process damaging the Gym as well. Because of this, Ash doesn't get to challenge him again until after the Sinnoh Grand Festival.
- Victory Is Boring: He got very disillusioned with Pokémon battling due to his constant streak of being undefeated.
- Worthy Opponent: While Ash lost the exhibition match he had against Flint, Volkner was inspired to take up battling seriously again, and accepts Ash as his first challenger out of his retirement. Thanks to Team Rocket's shenanigans, Ash and Volkner wouldn't have their gym battle for more than a dozen episodes. Volkner explicitly stated that, once he's done repairing the damage Team Rocket has done to his gym, he refuses to accept any other challengers until he and Ash face off again.