Glitch dimension
The sprite glitch is a glitch that alters the appearance of the sprite images in the first three generations, making the sprites appear to be cut into pieces or even unrecognizable in some instances. Due to engine similarities in the first two generation games, the sprite glitch exhibits itself in nearly an identical way in both, albeit with different ways of exploitation.
Generation I
In Red, Blue, and Yellow, the glitches Missingno. and 'M will distort battle sprites upon their encounter, however this can be fixed by viewing the stats of a non-glitched Pokémon.
Generation II
The glitch returned in Generation II where it occurred if using a cheat device to get out of the city in ways like walking through walls. This can sometimes make a clone of the previous city the player visited.
Generation III
The glitch can also occur in Generation III, if using a walk through walls code and an error occurs. There are other methods to the glitch, some of which involve using a Pokémon Center to heal the player's Pokémon when in a glitched area, visiting Glitch City, or catching certain glitch Pokémon.
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