What is "MissingNo."?

ThePanchamBro

IDK actually. But can someone explain?

Tacolaser

Missingno. was a glitch Pokemon from the earliest games. It could be used to duplicate items, so it became quite popular. People invented a lot of stories about it causing it to be even more firmly fixed into people's brains.

clasingla

Gen 1 glitch sprite that basically had data for a pokemon that was cut it also had the bird type and basically can encounter it by surfing on a certain tile

Eremas

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Eremas

There was a Pokémon that told no lies called Missingno

Eremas

after Arceus made the first poke egg. after charged energy and anti energy and the wave energy formed the first bonds the simplest waves took shape. They formed the world we see today. But from the nothingness there was another being. We called it Missingno.

UnovanZorua

A glitch from the first games.

ShinyPokemon795

https://community.pokemon.com/en-us/discussion/comment/92276#Comment_92276

It's still in all the mainline games, with gen9 having eggs spawn instead of pokemon. I think there's a youtube vid explaining it.