is a dual-type Bird/Normal glitch Pokémon.
is the "sister" glitch counterpart to Missingno., and is found exclusively in Pokémon Red and Blue. If is traded to the Pokémon Yellow, it will become a 3TrainerPoké $, but when Missingno. is traded to the Yellow version, it stays as Missingno. (although it will behave differently than the Red/Blue Missingno., such as the fact that it will change to its Yellow form).
Although it seems at first glance to be like Missingno., they are actually different glitch Pokémon with many differences; for example, can evolve into Kangaskhan while Missingno. cannot. Missingno.'s cry differs between a shortened version of Nidoran♂'s cry, Ditto's cry, and Dragonair's cry, whereas cry is a slightly different version of Zapdos's cry.
It cannot be obtained by the Mew glitch because when a Special of any multiple of 256 is used the game will only display a blank text box. can be encountered via the old man glitch with any name other than a default name. This is because it is encountered due to the wild encounter data being read from past the end-name marker. does not appear for a default name like 'RED' chosen directly from the new game interface because these are actually extended 7+ character names using multiple end name characters to hide additional data. The 'absolute name-space' is filled from one of these default names, so invalid symbol 0x00 is not withdrawn. can always appear at level 0 as long as the player's name is not a default name, but can also appear at level 80 if the player's name is a non-default name with an odd number of characters. This is because the game reads the end-name marker (which has an index number of 80) as the level.