R.O.B.

R.O.B., initially an Add-on for the Nintendo Entertainment System (NES), ultimately ended up as one of Nintendo's worst Add-ons in The History of Nintendo (This neither counted The Power Glove, nor U-Force, as neither were Published by Nintendo.). Notoriety further increased as the so-called "Robotic Operating Buddy" appeared again in various Nintendo Games. This, in turn, made R.O.B. better off as a character, is opposed to a useless