コゴミ Kogomi
Emerald Greta.png
Art from Emerald
Gender Female
Eye color Blue
Hair color Blonde
Hometown Unknown
Region Hoenn*/Kanto*
Trainer class Arena Tycoon
(Frontier Brain)
Generation III
Games Pokémon Emerald
Specializes in Fighting types*
Brain of Battle Arena
Symbol Guts Symbol
Anime debut Wheel of Frontier!
English voice actor Sonny Dey
Japanese voice actor Sanae Kobayashi

Greta (Japanese: コゴミ Kogomi) is the Frontier Brain and leader of the Battle Frontier's Battle Arena. She is the only character in the games to have the Trainer class Arena Tycoon (Japanese: アリーナキャプテン Arena Captain).

In the core series games

Greta can be blunt, and if an opponent looks weak, she will let them know. She likes tough Trainers and will gladly hand over the Guts Symbol if defeated.


Silver Symbol challenge

Gold Symbol challenge


Initial battle
  • Before battle
"Hey! Howdy! ...Wait, are you the challenger?"
"Is this right? Hmm... Hmhm..."
"I don't know how to say it, but... To put it bluntly, you look pretty weak. Are you sure you're up for me? Hmm... Well, all right! We'll take things easy to start with! Okay! Let's see you ignite my passion for battle!"
  • Being defeated
"No way! Good job!"
  • If the player is defeated
"Oh, come on! You have to try harder than that!
  • After being defeated
"Ow, wait a second! You are tough after all! I like you! Let's see your Frontier Pass."
"It's going to be fun the next time! I'm looking forward to it!"
  • Before battle
"Hey! Howdy! You finally won your way up to me! I was getting worried waiting for you! I was really looking forward to seeing you again!"
"... ... ... So, are you ready?"
"I won't allow a halfhearted effort! Be ready for a thrashing! Come on, referee! Let's get this started!"
  • Being defeated
"Huh? Are you serious?!"
  • If the player is defeated
"Heheh! What did you expect?"
  • After being defeated
"Gaaah! Blown away! Let's see your Frontier Pass!"
"Arrrgh! This is so infuriating! If we ever battle again, I won't lose! Don't you forget it! Bye-bye!"


Sprite from
Overworld sprite from

In the anime

Greta in the anime

Greta appeared in Wheel of Frontier. As in Pokémon Emerald, she is the Frontier Brain of the Battle Arena, and runs a karate dojo where she trains alongside her dozens of apprentices. Unlike the games, however, she is a Fighting-type expert. Before a battle, a wheel is spun to decide how many Pokémon will be used in the match. While the matches are Single Battles, the other Pokémon that are intended to be used remain outside of their Poké Balls until they faint.

Ash spun a two-on-two match. His Grovyle was defeated by Greta's Hariyama in the first round. Ash's Snorlax, using its impressive endurance and equally powerful attacks, went on to defeat both of Greta's Pokémon despite the type disadvantage and earn Ash the Guts Symbol.

She reappeared in a flashback in A Pyramiding Rage!.


Greta, like Ash, is a high-spirited individual and very passionate about Pokémon battles. Like her role models Chuck and Brawly, she continues to train her focus in order to improve her strength.

Speed-based strategies work poorly against Greta's team, and they actually help magnify her Pokémon's attacks. Her Pokémon's own speed and relentless physical moves make Greta a tough opponent. However, her Pokémon are weak to attacks from above or behind. They also tend to suffer severe injuries whenever they miss their target.


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

Hariyama was the first Pokémon used by Greta in her battle with Ash, where it first battled with Grovyle. Despite Grovyle managing to outmatch Hariyama in speed and dealing some damage on it, Greta was finally able to use Grovyle's momentum as her own advantage, and land a critical hit on the Wood Gecko Pokémon, knocking it out.

Ash next used his Snorlax against the Arm Thrust Pokémon. Despite having disadvantage in type, Snorlax was able to keep itself safe from Hariyama's attacks by using Protect. Eventually, one of Hariyama's Arm Thrusts missed its opponent and it instead punched the battlefield, leaving it with a sore hand. It was frozen solid and knocked out with an Ice Punch.

Hariyama's known moves are Arm Thrust and Focus Punch.

Debut Wheel of Frontier
Voice actors
Japanese Unshō Ishizuka
English Bill Rogers
Greta chose Medicham, along with her Hariyama to battle Ash in Wheel of Frontier. It was the second to go up after Hariyama was defeated by Ash's Snorlax. Medicham overwhelmed Snorlax with its astounding speed and agility. With Ice Punch, Medicham was able to freeze Snorlax, giving Greta a huge advantage.

Ash then commanded Snorlax to use Rest, and Greta told Medicham to attack Snorlax with repeated Focus Punches in order to break the ice. Greta told Medicham to use High Jump Kick but Snorlax managed to dodge it, causing Medicham to take crash damage. Snorlax then tried to attack it with a Hyper Beam, but Medicham evaded it and retaliated with Focus Punch.

Just then, Ash commanded Snorlax to use Hyper Beam on the ground, which catapulted it into the air. Using its altitude to his advantage, Ash told it to attack with a full-on Body Slam, defeating Medicham and earning Ash the Guts Symbol.

It reappeared in a flashback in A Pyramiding Rage!.

Medicham's known moves are Focus Punch, Ice Punch, and High Jump Kick.

Debut Wheel of Frontier
Voice actors
Japanese Megumi Hayashibara
English Sarah Natochenny

Greta has at least one other Pokémon, as one of the options for her battle wheel was to participate in a three-on-three battle.

Voice actors

Language Voice actor
Japanese 小林沙苗 Sanae Kobayashi
English Sonny Dey
European French Francine Laffineuse
Hindi सबीना मलिक मौसम Sabina Malik Mausum (Marvel HQ/Hungama TV)
Brazilian Portuguese Samira Fernandes
Spanish Latin America Mildred Barrera
Spain Silvia Sarmentera

In the manga

Ash & Pikachu

Greta in Ash & Pikachu

Greta appeared in An Awesome Showdown!!, where she, like in the anime, battled Ash at the Battle Arena and lost.


Medicham is Greta's only known Pokémon. It was sent out to battle Ash's Snorlax and lost.

Medicham's known moves are Focus Punch, Ice Punch, and High Jump Kick.

Debut An Awesome Showdown!!

Pokémon Adventures


Emerald arc

Greta is one of the seven Trainers hired by Scott to be a Frontier Brain at the Battle Frontier. Greta is first seen hosting the Battle Frontier's opening ceremony. The ceremony is interrupted by Emerald, who announces that he wishes to conquer the Battle Frontier. The press mistakenly report the incident as allowing an ordinary Trainer to take part in the Battle Frontier before it officially opens a week later. The Frontier Brains decide to use this assumption as free publicity and allow Emerald to challenge the Battle Frontier under the condition that he completes it before it officially opens.

Later, while Emerald is challenging the Battle Pyramid, Noland is attacked by an unknown assailant and several rental Pokémon are stolen. After Noland is taken to a hospital, the other Frontier Brains begin to suspect Emerald as the culprit. They head to the Battle Pyramid to confront Emerald and find him after having defeated Brandon. When they ask him about what happened, Emerald reveals that he did not attack Noland and is actually after the Mythical Pokémon Jirachi. The Frontier Brains find Emerald's explanation suspicious, but decide to follow him into Artisan Cave, where Jirachi is currently located at. Upon arriving, everyone is attacked by a horde of wild Smeargle while Emerald continues inside to find Jirachi. After the Frontier Brains get past the Smeargle, they meet up with Emerald, who has managed to find Jirachi. Emerald attempts to capture Jirachi, but is attacked by Guile Hideout, the actual culprit who attacked Noland.

Emerald is attacked by Guile's stolen rental Pokémon, but he refuses to fight them and continues to head after Jirachi. When Greta sees this, she angrily tells Emerald that stopping Guile is more important than Jirachi and goes off to help the others. When Spenser, Lucy, Tucker, and Brandon are defeated by Guile, Greta steps in to help and defeats the rental Pokémon. Eventually, Jirachi escapes, forcing Guile to leave to continue his pursuit of it. Injured from the battle, everyone decides to return to the Battle Frontier. Upon arriving, the press demand to know where the Frontier Brain's had gone and why they were injured. Tucker lies to everyone that they were all in training and sends Greta to have her battle with Emerald.

At the Battle Arena, Greta is Emerald's fourth opponent, and Emerald is allowed to battle her directly. Both sides fight hard, but Emerald eventually emerges as the victor, earning himself the Guts Symbol in the process. The battle leaves Emerald so exhausted that he and his Pokémon fall asleep. Greta brings Emerald and his Pokémon to the Battle Frontier's accommodations to sleep properly. When Greta and reporter Todd undress Emerald to make his sleep more comfortable, they are shocked to find that Emerald is much shorter than he initially appears. Todd kicks Greta out of the room and asks her to pretend she saw nothing.

The next day, Greta assists the other Frontier Brains in ushering people to the Battle Dome. During the tournament, Guile appears and manages to capture Jirachi. Guile uses the rental Pokémon to the attack innocent bystanders and heads to the Battle Tower to make his wish. Once he arrives at the Battle Tower, Guile uses Jirachi to wish for a gigantic Kyogre made of seawater to flood the entire Battle Frontier. Greta and the other Frontier Brains work together to get civilians to safety and fight off Guile's rental Pokémon while Emerald and the other Pokédex holders fight Guile. Eventually Emerald and the Pokédex holders manage to defeat Guile and destroy the gigantic Kyogre monster. The day after, an injured Greta and the other Frontier Brains congratulate Emerald for the hard work he put into saving everyone.

Omega Ruby & Alpha Sapphire arc

Greta and the other Hoenn Frontier Brains battle and defeat the Admins of Neo Team Magma and Neo Team Aqua, who had interfered in the launch of a rocket that was made to stop the meteoroid threatening to destroy the world. Greta attempts to interrogate the Admins on the location of their accomplice, Zinnia, only for the Admins to deny knowing where she had gone.


Umbreon is Greta's first known Pokémon. It was first seen at the Battle Frontier's opening ceremony alongside its Trainer. At Artisan Cave, it was used to battle Guile's army of stolen rental Pokémon. At the Battle Arena, Greta used Umbreon as her second Pokémon. It managed to defeat Emerald's Dusclops, but was defeated by his Sudowoodo.

Umbreon's known moves are Quick Attack, Double Team, Feint Attack, and Confuse Ray, and its Ability is Synchronize.

Debut Swanky Showdown with Swalot
Shedinja is Greta's second known Pokémon. It was first used at the Battle Arena to battle Emerald. There, it was the third Pokémon Greta used and battled Emerald's Sudowoodo. Despite its single hit point, Shedinja managed to defend against Sudowoodo's super-effective hits and fight back. Despite this, Sudowoodo survived Shedinja's attacks, allowing it to win via assessment.

Shedinja's known moves are Endure and Solar Beam, and its Ability is Wonder Guard.

Debut Sneaky Like Shedinja
Heracross is Greta's third known Pokémon. It was first used at the Battle Arena to battle Emerald. There, it was the first Pokémon Greta used and battle Emerald's Sceptile. Although Sceptile survived Heracross's Megahorn, it was defeated via assessment afterward.

Heracross's only known move is Megahorn.

Debut Sneaky Like Shedinja



Language Name Origin
Japanese コゴミ Kogomi From 屈 kogomi (ostrich fern)
English Greta From guts or great
German Greta From her English name
Spanish Coro From coraje (courage)
French Carole From cran (guts)
Italian Valentina From valore (valor)
Korean 나리 Nari From 청나래고사리 cheongnarae-gosari (ostrich fern)
Chinese (Mandarin) 黃瓜香 / 黄瓜香 Huángguāxiāng From 黃瓜香 / 黄瓜香 huángguāxiāng / wòhnggwāhēung (ostrich fern)
Chinese (Cantonese) 黃瓜香 Wòhnggwāhēung
Vietnamese Kogomi Transcription of her Japanese name

Arena Tycoon

Language Title
  Japanese アリーナキャプテン Arīna Kyaputen
Chinese Cantonese 競技場主將 Gihnggeihchèuhng Jyújeung
Mandarin 競技場主將 / 竞技场主将 Jìngjìchǎng Zhǔjiàng
  Finnish Areenapäällikkö
  European French Pro du Dojo
  German Ringmeister
  Italian Maestra Dojo
  Korean 아레나캡틴 Arena Kaeptin
  Brazilian Portuguese Comandante da Arena
Spanish   Latin America Maestra del Dojo
  Spain Maestra Dojo
  Vietnamese Đội trưởng của Sân vận động

Related articles

  Hoenn Battle Frontier  
  Battle Tower  
Salon Maiden
  Battle Palace  
Palace Maven
  Battle Factory  
Factory Head
  Battle Pyramid  
Pyramid King
  Battle Dome  
Dome Ace
  Battle Arena  
Arena Tycoon
  Battle Pike  
Pike Queen

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  This game character article is part of Project CharacterDex, a Bulbapedia project that aims to write comprehensive articles on each character found in the Pokémon games.