Missingno

Missingno, short for "Missing Number," is a glitch Pokémon that appeared in the first generation of Pokémon games, specifically in Pokémon Red, Blue, and Yellow.
Missingno is not an official Pokémon, but rather a programming error caused by the way the game's data is organized. It appears as a pixelated, distorted version of a Pokémon or a collection of pixels with no discernible form. When encountered in the game, it can cause various glitches, including duplicating items or causing other Pokémon to appear as level 0.
The appearance of Missingno is the result of the game attempting to interpret data that doesn't exist or isn't properly organized. The glitch occurs when a player performs a specific sequence of actions in the game, such as surfing along the coast of Cinnabar Island, then performing certain actions in the Pokémon Mansion.
While Missingno may seem like a curiosity or even a fun Easter egg to some players, it's important to note that encountering it can cause unintended glitches or even corrupt the player's save file. As a result, most players are advised to avoid encountering Missingno altogether.
Category:Multiverse