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Glitch Trainer

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Battling a glitch Trainer

Glitch Trainers are Trainers that can only be battled via the use of glitches.

Generation I

Glitch Trainers can be battled in one of two ways: the old man glitch (if the player's name contains certain special characters in the 3rd, 5th, or 7th slot) or the Ditto glitch (using Special stats ranging from 201-255RB or 201-253Y). Unlike other Trainers, glitch Trainers say nothing before or after the battle, and often use glitch Pokémon.

Old man glitch method

If the player encounters a glitch Trainer via the old man glitch, the team used by said trainer will be determined by the last team index number loaded, and the team will be always read from an unexistent trainer class #256 - so if a Gambler with team number 3 was fought last time and the player encounters a trainer via old man glitch, the game will load team #3 of trainer #256, regardless of the encountered trainer class.

Below is a list of the first 10 teams of the trainers encountered via the old man glitch.

Team ID Pokémon 1 Pokémon 2 Pokémon 3 Pokémon 4 Pokémon 5 Pokémon 6
0 ◣ゥ 8 Lv. 32 Glitch (FA) Lv. 32 MissingNo. Lv. 32 PKMN ◣ n Lv. 32 Flareon Lv. 32 Glitch (FA) Lv. 32
1 Drowzee Lv. 111 Rhydon Lv. 111 Pidgey Lv. 111 Grimer Lv. 111 MissingNo. Lv. 111 ゥ$ (F0) Lv. 111
2 ゥ (C1) Lv. 9 Grimer Lv. 9 MissingNo. Lv. 9 Glitch (EB) Lv. 9 ◣ゥ 8 Lv. 9 MissingNo. Lv. 9
3 Trainer Lv. 215 Pidgeot Lv. 215 Ivysaur Lv. 215 Trainer Lv. 215 Nidoking Lv. 215 Fearow Lv. 215
4 Tentacool Lv. 128 Gengar Lv. 128 Cubone Lv. 128 a Lv. 128 Dugtrio Lv. 128 Growlithe Lv. 128
5 Tentacool Lv. 128 Voltorb Lv. 128 Cubone Lv. 128      
6 Growlithe Lv. 64          
7 Pゥ ゥ ゥ Lv. 128 C Lv. 128 Rhydon Lv. 128 Exeggcute Lv. 128 Spearow Lv. 128 Trainer Lv. 128
8 Nidoran♀ Lv. 14 Magneton Lv. 14 'M (FF) Lv. 14 Gastly Lv. 14 Grimer Lv. 14 MissingNo. Lv. 14
9 Rhyhorn Lv. 42 Arcanine Lv. 42 MissingNo. Lv. 42 Clefairy Lv. 42 Mewtwo Lv. 42 MissingNo. Lv. 42

Ditto glitch method

If the player encounters a glitch Trainer via the Ditto glitch, the attack stage modifier of the Ditto used will determine which team will be used. This modifier is normally 7, causing the game to attempt to load the 'seventh' team; as most Trainers only have one set team, this almost always results in a glitchy team with several glitch Pokémon. If a move like Growl is used six times to lower the Ditto's attack stage modifier to 1, then the loaded team will be valid.

Two particular Trainers, Prof. Oak and Blue, have three different possible teams based on the player's starter Pokémon; therefore any attack stage modifier from 1 to 3 will work. This is the easiest way to battle Prof. Oak with his original, dummied-out team.

ZZAZZ glitch

Main article: ZZAZZ glitch

If the player performs the Ditto glitch and uses a Special stat of either 251, 252, 254, or 255, the ZZAZZ glitch, AKA the exploding Bulbasaur glitch, will be triggered. This glitch heavily corrupts the game's save file and memory, changing several in-game bytes to have a value of 153; most noticeably, parts of the player's name will be overwritten with multiples of the letter "Z" (index number 153), and most of the player's Pokémon will be changed to level 153 Bulbasaur (index number 153) with several copies of the attack Explosion (index number 153).


The player encounters Jacred

Jacred is a glitch Trainer class. Its name is derived from parts of the preset names that the player can choose for themselves and their rival, specifically "Jack" and "Red". 'Jacred' can be battled by performing the Ditto glitch with a Special stat of 200. Unlike other glitch Trainers, Jacred has no defined sprite and can instantly crash the game when the player's Pokémon uses a move or when the player accesses their party or uses an item.

There is also a ZZAZZ variant of Jacred, caused by using the Ditto glitch with a Special stat of 200 and Growl one or two times. Because this is a ZZAZZ variant, battles can be escaped using a Poké Ball, though the Bag will be corrupted. The screen is almost fully covered by PokéTrainer, but it is still possible to scroll down over Cancel, find a Poké Ball, and escape the battle. After escaping the battle, the player will be in a different Glitch City. The game will not be able to be saved, because when the party is opened, the game will lock. The city has no PC to indirectly save the game, nor a Pokémon Center where the save option can be restored by healing the player's party.


By Pokéfan95
This video is not available on Bulbapedia; instead, you can watch the video on YouTube here.

ZZAZZ variant
By Pokéfan95
This video is not available on Bulbapedia; instead, you can watch the video on YouTube here.

Generation II

Main article: Trainer House glitches

Glitch Trainers may appear in the Trainer House as a result of the Trainer House glitch.

Unused Trainer classes

292Shedinja.png The contents of this section have been suggested to be split into an article.
Please discuss it on the talk page for this section.

Prof. Oak

Professor Oak, who cannot normally be battled

Prof. Oak (Japanese: オーキドせんせい Professor Oak) can be battled by performing the Ditto glitch with a Special stat of 226, or by performing the old man glitch with the character MN in the third, fifth, or seventh slot of the player's name. Interestingly, the Japanese script uses an apparent earlier name for Professor Oak—he is normally called オーキドはかせ Dr. Oak.

In the Generation I games, there is unused Trainer data for Prof. Oak. This implies that it was originally going to be possible to battle him.

In the data, Oak normally has a level 66 Tauros, a level 67 Exeggutor, a level 68 Arcanine, a level 70 Gyarados, and one of the Kanto starter Pokémon at level 69. This places his strength on-par with Blue, who is the Pokémon Champion and grandson of Professor Oak. Additionally, four of his Pokémon are identical to the ones used by Blue, but are at higher levels, so originally Oak may have been intended to be in the game as the Champion, or at least another high-ranking Trainer, possibly in the same manner as Red in Generation II. This is supported by an email on the PC in Professor Oak's Laboratory, from the Indigo League issuing a challenge to all Trainers and specifically requesting Oak to come visit them.

When battling Prof. Oak via the Mew glitch, the Attack of the wild Ditto must be lowered by 4, 5 or 6 stages for Prof. Oak to have the Charizard team, the Venusaur team or the Blastoise team, respectively.



Spr RG Oak.png Spr Y Oak.png
Image from
Red and Blue
Image from



Chief[1] (Japanese: シルフのチーフ Silph's Chief), or Silph's manager,[2] is an unused Trainer class that is found in the Generation I games. Chief can be battled using the Ditto glitch and a Pokémon with a Special stat of 227, or through the use of the old man glitch when the player's name contains a dash in the third, fifth, or seventh letter slot in English Pokémon Red and Blue. Chief has no defined sprite, using the one of a Scientist instead due to the proximity in the game's data, nor a programmed party.

A Team Rocket Grunt in the unnamed Game Corner warehouse in Celadon City appears to mention Chief (チーフ) while bragging about his achievement to him.[3]

In the Japanese Pokémon Red, Green, and Blue, there are hidden texts in the rest houses of the Safari Zone. Silph's manager is mentioned by the text on the Area 2 rest house, which claims that he is in the Safari Zone. All these texts were disabled in the Japanese Pokémon Yellow and the localizations.


Trainer classes in the Pokémon core series
Kanto Ace Trainer*BeautyBikerBird KeeperBlack Belt*Bug CatcherBurglarCamper*ChampionGSCFRLGHGSS
ChannelerCue BallElite FourGSCFRLGHGSSEngineerFishermanGamer*GentlemanHikerJugglerLass
LeaderGSCFRLGHGSSPicnicker*Poké Maniac*PKMN TrainerGSCPsychicRivalRocker
Rocket Boss*FRLGHGSSSailorScientistSuper NerdSwimmerTamerTeam Rocket Grunt*Youngster
BoarderHGSSDouble TeamHGSSFirebreatherGSCHGSSGuitaristGSCHGSSMediumGSCHGSSPokéfanGSCHGSS
Cool CoupleFRLGCrush KinFRLGSis and BroFRLGYoung CoupleFRLGHGSS
Beta Trainer class:

Cloning glitchesGlitch PokémonGlitch typesError messages
Generation I: --0 ERRORCable Club escape glitchExperience underflow glitchGlitch CityGlitch dimension
Glitch movesGlitch TrainersItem duplication glitchMew glitchOld man glitchPewter Gym skip glitch
Pokémon merge glitchRhydon glitchSelect glitches (dokokashira door glitch, second type glitch)
Super GlitchTime Capsule exploitZZAZZ glitch
Generation II: Celebi Egg glitchCoin Case glitchesExperience underflow glitchGlitch dimension
Glitch EggSketch glitchTeru-samaTime Capsule exploitTrainer House glitches
Generation III: Berry glitchDive glitchPomeg glitch
Generation IV: Acid rainGTS glitchesMimic glitch
Pomeg glitchRage glitchSurf glitchTweaking
Generation V: Sky Drop glitchFrozen Zoroark glitch
Generation VI: Lumiose City save glitch
Glitch effects: Game freezeGlitch battleGlitch song
Gens I/II only: Japanese characters in the international versions
Gen I only: Glitch screenTMTRAINER effectInverted sprites
Gen II only: Glitch dimension
Lists: Glitch movesGlitch types
Glitch Pokémon (Gen IGen IIGen IIIGen IVGen VGen VI)
Glitches (Gen IGen IIGen IIIGen IVGen VGen VISpin-off)

Project GlitchDex logo.png This article is part of both Project GlitchDex and Project CharacterDex, Bulbapedia projects that, together, aim to write comprehensive articles on glitch Trainers. Project CharacterDex logo.png