The so called "other" glitch pokemon besides Missingno. and M', whose hex data is still in the game but is not accessible without use of a gameshark, unlike the more popular M' and Missingno. In dealing primarily with the original red, blue, and yellow versions a hexadecimal system was used for storing the pokemon, leaving 256 data slots in which pokemon could be put into.Because only 151 pokemon "officially" exist in those games, there are also 105 glitch pokemon that fill those unused data spots. The glitch pokemon that can be found are different between the red/blue/green games and yellow, leaving a total of 210 possible glitch pokemon. Some of these are unobtainable through any means or change species upon capture, even with only use of a gameshark to make them appear in the wild.