Like 'M (00), glitches the game in various ways, can evolve into a Kangaskhan (at level 0) and Clefairy (at level 128), and changes level and stats seemingly at random. In addition, it possesses a Super Glitch move as one of its starting moves, which means encountering it and allowing it to attack is dangerous for the player's current game progress.
The special stat required to catch a using method #3 of the Mew glitch is 0, although the game will display a blank text box if a special of 0 (modulo 256) is used, so cannot be obtained this way.
's weight is 1031.6 lbs and its height is 23'2" (ca. 7 m)(the same as 4 4Hy), and occupies hexadecimal slot 00 in the game's memory.
When the player defeats in a Trainer battle, it will fill the top of the screen with the letter E.