Lpho

Lpho is the second boss of the first game in the Ralph's Fun! series, Ralph's Fun!. Though it is invisible, Mechanic claims that it was intended to be a worm. A sprite exists for it within the coding of the game, but the project file has since been lost. It is defeated by shooting and has 3 HP.

Nomatic history
Its name was forgotten and records were lost until the rediscovery of Mechanic's sketchpad recently. A page contained its name and specified what it was.