Remaining HP glitch

The remaining HP glitch is present in Pokémon Red, Blue, and Yellow. It allows players to convert the remaining HP of a Pokémon into its index number, effectively allowing the player to obtain any Pokémon in Generation I.

This glitch requires a Pokémon with a catch rate of 255: Caterpie, Weedle, Pidgey, Rattata, Spearow, Ekans, Sandshrew, Zubat, Oddish, Diglett, Meowth, Poliwag, Bellsprout, Geodude, or Magikarp.

Performing the glitch

First, the player must deposit a Pokémon with a catch rate of 255 that has a remaining HP equal to the index number of the desired resulting Pokémon into an empty PC Box, followed by three other Pokémon and a Q ◣/'M (FF). The player must then fill their party with Pokémon (but none of the Pokémon just deposited). The player must then change the Box back to the one which contains the deposited Pokémon. The player must then catch a wild Pokémon. All Pokémon but one from the party must then be deposited into a Box other than the one containing Q ◣/'M (FF). The Q ◣/'M (FF) must then be withdrawn to the player's party, followed by the caught wild Pokémon, two of the Pokémon deposited at the start, and the Pokémon with the remaining HP. The Pokémon with the remaining HP then becomes an unstable hybrid of the initial species and the species whose index number matched the remaining HP of the Pokémon. The Pokémon can be stabilized by taking it to the Day Care Center.

Uses

Through this glitch, it is possible to obtain every glitch Pokémon above the boundary of the Mew glitch. In order to obtain these, it is recommended to use Sandshrew, as it has the highest base HP of the usable Pokémon. Since it has the ability to obtain a maximum HP of 255, this allows Sandshrew to be the best candidate if one performs the glitch using a normal Pokémon as a base. Through use of the Old man glitch, it is possible to obtain Pokémon over level 100 to use for this glitch to obtain these Pokémon.

Video

By Pacoo81

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

Glitches in the Pokémon games Multiple generations Transform glitches • Glitch Trainers • Cloning glitches • Error messages • Arbitrary code execution Generation I Glitches • Battle glitches • Overworld glitches -- • 0 ERROR • Broken hidden items • Cable Club escape glitch • Dual-type damage misinformation Experience underflow glitch • Fight Safari Zone Pokémon trick • Glitch City • Item duplication glitch • Item underflow Mew glitch • Old man glitch • Pewter Gym skip glitch • Pokémon merge glitch • Rhydon glitch • Rival twins glitch Select glitches (dokokashira door glitch, second type glitch) • Super Glitch Time Capsule exploit • Walking through walls • ZZAZZ glitch Generation II Glitches • Battle glitches Bug-Catching Contest glitch • Celebi Egg glitch • Coin Case glitches • Experience underflow glitch Glitch dimension • Glitch Egg • Teru-sama • Time Capsule exploit • Trainer House glitches • GS Ball mail glitch Generation III Glitches • Battle glitches • Overworld glitches Berry glitch • Dive glitch • Pomeg glitch • Glitzer Popping Generation IV Glitches • Battle glitches • Overworld glitches Acid rain • GTS glitches • Pomeg glitch • Rage glitch Surf glitch • Tweaking • Pal Park Retire glitch Generation V Glitches • Battle glitches • Overworld glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Frozen Zoroark glitch • Sky Drop glitch Generation VI Glitches • Battle glitches • Overworld glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Lumiose City save glitch • Symbiosis Eject Button glitch • Toxic sure-hit glitch Generation VII Glitches • Battle glitches • Overworld glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Toxic sure-hit glitch • Rollout storage glitch Generation VIII Glitches Charge Beam additional effect chance glitch • Charge move replacement glitch • Choice item lock glitch Toxic sure-hit glitch • Rollout storage glitch • Party item offset glitch Generation IX Glitches Glitch effects Game freeze • Glitch battle • Glitch song Gen I only: Glitch screen • TMTRAINER effect • Inverted sprite Gen II only: Glitch dimension Lists Glitches (GO • Mystery Dungeon • TCG GB • Spin-off) Glitch Pokémon (Gen I • Gen II • Gen III • Gen IV • Gen V • Gen VI • Gen VII • Gen VIII) Glitch moves (Gen I) • Glitch types (Gen I • Gen II)

This glitch Pokémon article is part of Project GlitchDex, a Bulbapedia project that aims to write comprehensive articles on glitches in the Pokémon games.