Players can now transfer pocket monsters from the series' older Nintendo 3DS titles to "Pokemon Sun and Moon" by way of Pokemon Bank, although a caveat stands. Players from all around the world have been reporting that a notorious glitch Pokemon called Missingno leaves its mark when brought into "Sun and Moon."

What's a Missingno?

A Missingno typically refers to a very specific type of Pokemon that looks nothing like your regular pocket monsters. The famous glitch Pokemon at times look like a bird, or a messed up barcode - basically anything that looks weirder than your average Pokemon.

It's called Missingno as a short for "Missing Number," and this is where things start to get complicated. The way original "Pokemon" games are programmed is by using variables to refer to a specific Pokemon. As explained by Kotaku, variables are stored as powers of two - 1, 2, 4, 8, 16, 32 and so one.

Now there are 151 pocket monsters and 151 is not a power of two. The first usable variable that can fit all 151 Pokemon being 256, becomes too big it leaves 105 variables empty. When this happens, a Missingno appears, which is essentially a stray Pokemon that the game spits out when it doesn't know what pockets monster it's supposed to let the player encounter.

How Missingno Affects "Pokemon Sun and Moon"

As "Pokemon" veterans know, Missingno is a glitch that players first found in "Red and Blue." With the release of "Pokemon Sun and Moon," players who caught the glitch Pokemon before have been testing what happens when your transfer the glitch Pokemon into the new game, IGN reported.

Missingno appears to cause other Pokemon in the Pokemon Bank transporter box to mess up their nicknames when they make it into "Sun and Moon." Since nicknames are permanent once a pocket monster makes it into another game, the Pokemon will have to live with that incorrect or awful name for good.

What Does Nintendo Say About Missingno?

Although the glitch has been around for quite a while now, "Pokemon Sun and Moon" players, especially those who belong to the new generation of fans, need to know what Nintendo previously said about Missingno. "MissingNO is a programming quirk, and not a real part of the game. When you get this, your game can perform strangely, and the graphics will often become scrambled, Nintendo said in a statement.

"To fix the scrambled graphics, try releasing the MissingNo Pokémon. If the problem persists, the only solution is to re-start your game. This means erasing your current game and starting a brand new one."