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This article is about the Elite Four member. For other uses, see Aaron (disambiguation).

リョウ Ryou
Diamond Pearl Aaron.png
Art from Diamond and Pearl by Ken Sugimori[1]
Gender Male
Eye color Green
Hair color Green
Hometown Unknown
Region Sinnoh
Trainer class Elite Four
Gym Leader (formerly)
Bug Catcher (formerly)
Generation IV, VIII
Games Diamond, Pearl, and Platinum, Brilliant Diamond and Shining Pearl, Masters EX
Elite Four of Pokémon League (Sinnoh)
Specializes in Bug types
Game animation cameos GOTCHA!
English voice actor Kevin Gomez[2] (Masters EX)
Japanese voice actor Yoshitaka Yamaya (Masters EX)
Anime debut A Trainer and Child Reunion
English voice actor Christopher C. Adams
Japanese voice actor Kenshō Ono
Chinami Nishimura (child)

Aaron (Japanese: リョウ Ryou) is a Bug-type Trainer and member of the Sinnoh Elite Four.

In the core series games

In Pokémon Diamond, Pearl, and Platinum and Brilliant Diamond and Shining Pearl, Aaron is the first member of the Sinnoh Elite Four.

In Pokémon Black 2 and White 2, a show on the Variety channel will occasionally tell a tale of a former Bug Catcher and Gym Leader in Sinnoh that quit as a Gym Leader in order to become part of the Elite Four, referencing Aaron.


Pokémon Diamond and Pearl

Pokémon Platinum

Pokémon Brilliant Diamond and Shining Pearl

First match

Rematch (before Stark Mountain)

Rematch (after Stark Mountain)

In the spin-off games

Pokémon Masters EX

Main article: Aaron (Masters)

Aaron forms a sync pair with Vespiquen in Pokémon Masters EX. Aaron became a playable sync pair on May 9, 2022.

Sync Dex Trainer NDex Pokémon Type Weakness Role Base Potential Availability
#146 VSAaron Masters.png Aaron #0416 MastersIcon0416.png Vespiquen
BugIC Masters.png
IceIC Masters.png
Masters Support.png ★★★★★☆EX Sync Pair Scout



Sticker Template Aaron Background.png
Sticker Template background from
Brilliant Diamond and Shining Pearl

Sprites and models

Spr DP Aaron.png Spr Pt Aaron.png VSAaron.png VSAaron BDSP.png VSAaron 2 BDSP.png
Sprite from
Diamond and Pearl
Sprite from
VS sprite from
VS model from
Brilliant Diamond and
Shining Pearl
Unused Battle Tower VS model from
Brilliant Diamond and Shining Pearl
Aaron OD.png Aaron BDSP OD.png
Overworld sprite from
Diamond, Pearl, and Platinum
Overworld model from
Brilliant Diamond and
Shining Pearl


Main article: Aaron/Quotes

In the anime

Main series

Aaron in the anime
Aaron when he was younger

Aaron was briefly mentioned by fellow Elite Four member Lucian in An Elite Meet and Greet!. He then debuted in A Trainer and Child Reunion!, where he was shown to be preparing for his championship battle against Cynthia. He was conducting a public training session at a small town between Hearthome City and Solaceon Town, which had been advertised in an issue of the Poké Chic magazine that featured him on the cover.

Ash and his friends decided to go watch Aaron train and joined the long line of fans that were there to meet him, with Dawn getting her copy of Poké Chic signed by him. When Aaron found out that the group knew Cynthia personally, he invited them to his training center. There, he revealed that a Wurmple was his first Pokémon and close friend when he was young, but due to his anger at it for losing a match, he abandoned it. He regretted it later, and from then on, he tried his best to train hard and to understand Bug-type Pokémon so that the same incident would not happen again. Aaron eventually encountered Wurmple again as a Beautifly by the end of the episode, following a battle against Team Rocket.

Aaron reappeared in the next episode, where he was seen on television having his battle with Cynthia at the Champion League, but he lost.

Aaron made a cameo appearance in the ending credits of Zoroark: Master of Illusions.


Aaron likes to be surrounded by nature and Bug-type Pokémon. He tends to train in the forests, which allow him to rest up for upcoming challenges. He also enjoys the attention given by the status of being an Elite Four member. In addition, Aaron places friendship in high value, particularly with his Pokémon.


This article is missing information on this character's English voice actor and Japanese voice actor.
You can help by adding this information.

This listing is of Aaron's known Pokémon in the anime:

Aaron's Beautifly
Wurmple → Silcoon → Beautifly
Main article: Aaron's Beautifly

Aaron first encountered his Beautifly as a Wurmple when it helped him down from a high tree. They became very close friends, but finally Aaron became irritated that it always lost in battle and abandoned it in a park. When he later returned to find Wurmple, it was gone.

The same Wurmple returned in A Trainer and Child Reunion!, where it was revealed to have since evolved into a Beautifly. They reunited beside the very same tree where they had first met. It informed Aaron that it decided to start training by itself to become stronger. Beautifly then helped Aaron, Ash, and his friends to battle Team Rocket after they tried to steal Aaron's Pokémon. After this, Aaron took Beautifly back into his team.

Beautifly reappeared in the next episode, where Aaron used it as his last Pokémon in his battle against Cynthia. It went up against Cynthia's Gastrodon, but it was knocked out by Gastrodon's powerful Stone Edge.

Debut A Trainer and Child Reunion!
Voice actors
Japanese Kiyotaka Furushima
English Michele Knotz
Aaron's Skorupi
Aaron was seen training with a Skorupi in the lead-up to his match against Cynthia. It usually remains outside of its Poké Ball, and was seen on Aaron's shoulder.

None of Skorupi's moves are known.

Debut A Trainer and Child Reunion!
Voice actors
Japanese Katsuyuki Konishi
Aaron's Drapion
Drapion was first seen during Aaron's training exhibition in the lead-up to his battle with Cynthia. When Drapion was stolen by Team Rocket along with Aaron's other Pokémon, it attempted to attack Jessie's Seviper, but it got badly hurt by Seviper's Poison Tail. Later, it was able to defeat Seviper with a Hyper Beam.

During Aaron's battle against Cynthia in the following episode, Drapion was sent out to face Cynthia's Garchomp, but was defeated off-screen.

Drapion's known moves are Pin Missile and Hyper Beam.

Debut A Trainer and Child Reunion!
Aaron's Vespiquen
Aaron used Vespiquen along with his Drapion during his power demonstration. When it was captured by Team Rocket, she was critically hurt by James's Carnivine's Bullet Seed, but it was later able to defeat it with a Slash.

Vespiquen's known moves are Slash and Gust.

Debut A Trainer and Child Reunion!
Voice actors
Japanese Chinami Nishimura

Voice actors

Language Voice actor
Japanese 小野賢章 Kenshō Ono
西村ちなみ Chinami Nishimura (child)
English Christopher C. Adams
Czech Vojtěch Hájek
Finnish Petri Hanttu
European French Christophe Hespel
Norwegian Trond Teigen
Polish Grzegorz Drojewski
Brazilian Portuguese Yuri Chesman
Spanish Latin America Javier Olguín
Spain Ricardo Escobar


Aaron briefly appeared in GOTCHA!.

In the manga

Pocket Monsters DP

Aaron appears in Clefairy's Pokémon Center is Super Useful!?. He is seen taking his Stunky to a Pokémon which Red and Clefairy becomes in charge of. He reads a book while waiting for Stunky to feel better. However, the treatment Clefairy gave it was ruined by Stunky falling into the treatment machine and this failure made Stunky's condition worse. Aaron didn't like what Clefairy did after finding out about this. After Stunky used Poison Gas on Red, his Pokémon, and Professor Oak, both Aaron and Stunky leave the Pokémon Center.


Aaron's Stunky
Stunky was injured during its debut in which Aaron takes it to a Pokémon Center in which Red and Clefairy were running at the time. Clefairy takes care of it by putting it down on a machine. Stunky accidentally falls inside which ruined the treatment and Stunky became worse than before. Aaron didn't like what Clefairy did and ran off with Stunky after Stunky used Poison Gas on Red, his Pokémon, and Professor Oak.

Stunky's only known move is Poison Gas.

Debut Clefairy's Pokémon Center is Super Useful!?

Pokémon Adventures

Aaron in Pokémon Adventures

Aaron, along with Lucian and Bertha, appeared during the Platinum arc, having been enlisted by the Pokémon Association to decipher Charon's notebook that was stolen by Diamond's Lickilicky, Kit. Together, they figured out the hidden information inside the book and gave it to Diamond and Pearl so they can use it to stop Charon from capturing the Legendary Pokémon of Sinnoh.


Aaron's Drapion
Drapion is the only known Pokémon in Aaron's possession. It was used as a seat for Aaron while he used his laptop.

None of Drapion's moves are known.

Debut Tackling Togekiss

Pokémon Diamond and Pearl Adventure!

Aaron in Pokémon Diamond and Pearl Adventure!

Aaron made a brief appearance in Gathering of the Legendary Pokémon!, where he was watching Hareta and Koya's Pokémon League battle from the audience, along with Bertha and Lucian.

In the TCG

This listing is of cards mentioning or featuring Aaron or his Pokémon in the Pokémon Trading Card Game.

Aaron's Pokémon
Cards listed with a blue background are only legal to use in the current Expanded format.
Cards listed with a green background are legal to use in both the current Standard and Expanded formats.
Card Type English
Rarity # Japanese
Rarity #
Drapion Pokémon 4 Darkness Rising Rivals Rare 17/111 Gallade Half Deck   010/018
Heracross Pokémon 4 Grass Rising Rivals Rare 24/111 Gallade Half Deck   002/018
Vespiquen Pokémon 4 Grass Rising Rivals Rare 35/111 Gallade Half Deck   003/018
Yanmega Pokémon 4 Grass Rising Rivals Rare 37/111 Gallade Half Deck   004/018
Scizor Pokémon 4 Grass Rising Rivals Uncommon 48/111 Gallade Half Deck   001/018
Other related cards
Card Type English
Rarity # Japanese
Rarity #
Aaron's Collection Su Rising Rivals Uncommon 88/111 Infernape vs Gallade SP Deck Kit   017/018


  • In Pokémon Platinum and Pokémon Brilliant Diamond and Shining Pearl, Aaron is the only Elite Four member who still has a Pokémon that is not of his specialty type. Drapion is a Poison/Dark Pokémon, though it evolves from the Poison/Bug Skorupi. Also, Drapion is part of the Bug Egg Group.
    • In Brilliant Diamond and Shining Pearl, Aaron also uses Flygon, which is a Ground/Dragon Pokémon, but is part of the Bug Egg Group.
  • Aaron is the only Elite Four member whose highest-level Pokémon doesn't change between Pokémon Diamond and Pearl and Pokémon Platinum.
    • In Platinum and in rematches in Brillant Diamond and Shining Pearl, Aaron is the only member of the Elite Four whose signature Pokémon does not evolve from Pokémon introduced in a previous generation.
  • Aaron is the only notable Bug-type specialist to be an Elite Four member.
  • Aaron is the only Sinnoh Elite Four member whose Pokémon are all dual-typed.
  • Aaron's teams have the most quadruple weaknesses out of the Sinnoh Elite Four teams.


Language Name Origin
Japanese リョウ Ryou From 令法 ryōbu (Japanese clethra)[3]
English, French, Italian Aaron From arachnid and arthropod
German Herbaro
Spanish Alecrán From alacrán (scorpion)
Korean 충호 Chungho From 충 (蟲) chung (bug)
Chinese (Mandarin) 阿柳 Ā Liǔ From 山柳 shānliǔ / sāanláuh (Japanese clethra)
Chinese (Cantonese) 阿柳 A Láuh
Russian Аарон Aaron Transcription of his English name
Vietnamese Ryou Transcription of his Japanese name

See also


Sinnoh League
Elite Four
VSBertha BDSP.png
Elite Four
Elite Four
VSLucian BDSP.png
Elite Four
VSCynthia BDSP.png

PM GreenBlueYellowGoldSilver
Professor OakBillBill's wife
BrockMistyLt. SurgeErikaSabrinaKogaBlaineGiovanniLoreleiBrunoAgathaLance
Professor ElmEarlClefairy RangersKurtDJ MaryChairmanKiyo
PMRS RubySapphireRedBlue
Professor BirchMr. StoneMr. BrineyMaxieTetsuyaRydelRydel's rival
Dr. TakedaScott
PMDP DiaKazuki
Professor RowanMarsLookerCharon
Dai FugōOkane Daisukī
PMBW BlackBiancaCheren
Professor JuniperNCedric JuniperGhetsis
PMXY ShaunaProfessor SycamoreSerena
PMSM HalaLillie

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