okay so we've all heard of the infamous missingno "glitch" that happened in the original pokemon games on the Gameboy (GB). now heres something most later releases of the game did when you caught missingno....Game F*** in someway
However in the first round of pokemon games to come to north america and pocket monsters green in japan (to an even bigger extent) missingno when caught did not mess up your game...and in fact it EVOLVED in to kangaskhan at level 26 you know the female only pokemon...now some of you will shoot me down for this but missing no is actually a hastily removed piece of data a female "marowak" so similar combee in the later generation V games male and female cubones evolved into marowak and the female later into kangaskhan but the developers at nintendo thought that kangaskhan should be a stand alone. now befor you say in generation I there where no genders they started in generation II....i point to cubones pokedex data from yellow.
Yellow: Wears the skull of its deceased mother. Its cries echo inside the skull and come out as a sad melody