Inverted sprites

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Inverted sprites (also known as Scrambled sprites or Reversed sprites) is a side-effect of encountering certain Glitch Pokémon or viewing their stat screen in the Generation I games.


When the player first enters the battle, the trainer sprite is "glitchy" in appearance. It is also partially reversed from its normal state: Y Red Back.png
After the battle starts, the player's Pokémon also have the "glitchy" back sprites. Note also that the enemy Rattata also has its sprite reversed: Spr 1b 019.png
Once the player's Pokémon uses an attack, the enemy Pokémon's sprite breaks as well.

As the name implies, this glitch causes the sprites to appear backwards or flipped. This x-mirroring effect is used in the stats screen normally, but is only intended for front sprites and does not react well with other things. For instance, the trainer sprite and back sprites get a "glitchy" appearance when flipping is attempted. In addition, while the front sprites flip properly originally, once the sprite is updated (through attacking), it breaks. The effect causes no permanent damage on the game, however.


To fix the effect, the Pokédex entry or stats screen of a non-glitch Pokémon needs to be viewed.

Official Nintendo statement

Nintendo has an official description of MissingNo. listed in their Customer Service troubleshooting section, which includes a nonworking method of fixing the effect:

"MissingNO is a programming quirk, and not a real part of the game. When you get this, your game can perform strangely, and the graphics will often become scrambled. The MissingNO Pokémon is most often found after you perform the Fight Safari Zone Pokémon trick.

To fix the scrambled graphics, try releasing the MissingNo Pokémon. If the problem persists, the only solution is to re-start your game. This means erasing your current game and starting a brand new one." [1]

Nintendo was incorrect on the method for fixing this behavior; releasing MissingNo. does not fix inverted sprites. Instead, looking at the stats of a non-glitch Pokémon should fix the problem.


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In Red, Blue, and Yellow, an address in the RAM determines whether the sprite of the Pokémon in battle is inverted or not. The address in Red/Blue is 0xd0aa, and 0xd0a9 in Yellow. The normal value is 0x00, which results in the sprite presented in its normal orientation. When any value other than 0x00 is entered, it results in the sprite being inverted.

Viewing the Pokédex entry of glitch pokémon with the Pokédex number 00 or a number above 151 results in the value being changed, therefore inverting the sprite. Viewing the Pokédex entry or stats screen of a non-glitch Pokémon resets the value to 0x00 and makes sprites be presented in the normal orientation.


Transform glitchesGlitch TrainersCloning glitchesError messagesArbitrary code execution
Generation I: --0 ERRORBroken hidden itemsCable Club escape glitchExperience underflow glitch
Fight Safari Zone Pokémon trickGlitch CityItem duplication glitchItem underflowMew glitch
Old man glitchPewter Gym skip glitchPokémon merge glitchRhydon glitch
Select glitches (dokokashira door glitch, second type glitch) • Super GlitchTime Capsule exploitZZAZZ glitch
Generation II: Bug-Catching Contest glitchCelebi Egg glitchCoin Case glitchesExperience underflow glitch
Glitch dimensionGlitch EggTeru-samaTime Capsule exploitTrainer House glitchesGS Ball mail glitch
Generation III: Berry glitchDive glitchPomeg glitchGlitzer Popping
Generation IV: Acid rainGTS glitchesPomeg glitch
Surf glitchTweakingPal Park Retire glitch
Generation V: Sky Drop glitchFrozen Zoroark glitchChoice item lock glitchCharge move replacement glitch
Generation VI: Choice item lock glitchCharge move replacement glitchLumiose City save glitch
Symbiosis Eject Button glitchToxic sure-hit glitch
Generation VII: Charge move replacement glitchChoice item lock glitchToxic sure-hit glitchRollout storage glitch
Generation VIII: Charge move replacement glitchChoice item lock glitchToxic sure-hit glitchRollout storage glitch
Glitch effects: Game freezeGlitch battleGlitch song
Gen I only: Glitch screenTMTRAINER effectInverted sprites
Gen II only: Glitch dimension
Lists: Glitches (Gen IGen IIGen IIIGen IVGen VGen VIGen VIIGen VIIISpin-off)
Glitch Pokémon (Gen IGen IIGen IIIGen IVGen VGen VIGen VIIGen VIII)
Glitch moves (Gen I) • Glitch types (Gen IGen II)

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