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Rhydon glitch

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The Rhydon glitch affects glitch Pokémon with an invalid Pokédex number in Generation I when the Pokédex entry is shown upon catching it. All Pokédex numbers from 001 to 151 contain official Pokémon, so are valid.

After the Pokédex entry is displayed upon catching a Pokémon with an invalid Pokédex number, an affected Pokémon will become Rhydon, as a subroutine used when giving the player a Pokémon converts all invalid Pokémon to Rhydon. The Pokémon's moves will be replaced by Rhydon's moves at the level it was caught at. If this Pokémon is sent to Bill's PC, it will become an unstable hybrid Pokémon, with the original glitch Pokémon as the recipient and Rhydon as the donor. Due to all hybrid glitch Pokémon having Pokédex numbers equivalent to official Pokémon, they are not affected by this glitch.

Returning the glitch Pokémon to its original self

To return the unstable Rhydon-glitch Pokémon hybrid back to just the original glitch Pokémon, it must be stabilized. To stabilize an unstable hybrid Pokémon, a Pokémon can be evolved (in the way the glitch Pokémon would), traded to Pokémon Stadium 2, or deposited and withdrawn from Pokémon Day Care. However, the glitch Pokémon will still have the nickname "RHYDON" after being stabilized. This allows these glitch Pokémon to learn every move Rhydon can. Once stabilized, the Pokémon can be traded to the Generation II games.

Methods of avoiding the Rhydon glitch

  • Obtaining a glitch Pokémon with a Pokédex number less than 152 which is not 000.
  • Obtaining a glitch Pokémon which doesn't show its Pokédex entry upon capture.
  • Activating the flag which is the same as the obtained flag for the glitch Pokémon as a method of avoiding the Pokédex entry. For example, Pokédex entries belonging to glitch Pokémon in the No. 000 family (such as Missingno.) will only appear upon capture if the player has not encountered Cubone.
  • Obtaining a glitch Pokémon twice, as on the second time Pokédex entry flag will already be obtained and the conversion to Rhydon will no longer take place.
  • Obtaining the glitch Pokémon by evolution.
  • Trading the glitch Pokémon from another version to obtain the equivalent glitch Pokémon.


Main
Multiple
generations
:
Cloning glitchesGlitch PokémonGlitch types
Generation I: --0 ERRORCable Club escape glitchDokokashira door glitch
Error codesExperience underflow glitchGlitch CityGlitch dimension
Glitch movesGlitch TrainersItem duplication glitchJohto guard glitch
Mew glitchOld man glitchPewter Gym skip glitchPokémon merge glitch
Second type glitchRhydon glitchSuper GlitchZZAZZ glitch
Generation II: Celebi Egg glitchCoin Case glitchesError codesExperience underflow glitchGlitch Egg
Johto guard glitchSketch glitchTeru-samaTrainer House glitchGlitch dimension
Generation III: Berry glitchDive glitchPomeg glitch
Generation IV: Acid rainGlobal Terminal 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 text in English games
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 Project GlitchDex, a Bulbapedia project that aims to write comprehensive articles on glitches in the Pokémon games.