Glitch Pokémon

An example of a glitch Pokémon

A glitch Pokémon is a Pokémon that exists in the games due to a programming or level design oversight, and/or for beta testing. As they were not intentionally placed inside the game by Nintendo or Game Freak, some of them might be hazardous to saved data. Many were originally supposed to be placeholders for unused hexadecimal addresses in the game.

Catching a glitch Pokémon will sometimes cause Pokédex data to appear which may freeze the game. To avoid this, the player must have activated a specific flag, which will be either seeing a specific Pokémon or owning a specific Pokémon.

Obtainable glitch Pokémon

Main article: List of glitch Pokémon

In Generation I

In Generation II

Gallery

Missingno.	LM4	Lowercase a glitch Pokémon	The X - x glitch Pokémon
In this screenshot, a Ditto transformed into the player's Q, and then the player sent out a Spearow	H POKé, a difficult-to-catch Glitch Pokémon	"Five question marks", a Glitch Pokémon which accounts for the hexadecimal slots 000, 252, 254 and 255 in the Gold/Silver versions	Glitch egg, which accounts for the hexadecimal slot 253 in the Gold/Silver versions
Missingno. found in the Yellow Version (by using the Mew glitch)	7g being encountered in the Yellow version	♀ (female symbol glitch) being encountered in the Yellow version

Trivia

• The 36 catchable glitch Pokémon, plus the original 151 Pokémon, brings the total number of catchable Pokémon in Red, Blue, and Yellow to 187.

Related articles

• Glitch
• Hybrid glitch Pokémon
• List of glitch Pokémon

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