Character fromDragon Ball Z. A genius scientist who is the mastermind behind theRed Ribbon ArmyAndroids, chief amongst them the bio-organicCell. In the past, he had a son namedGevoand a wife calledVomi, which were later the base for the design of his creations,Android 16andAndroid 21respectively. Gero later modified himself into acyborg, to which he codenamed this projectAndroid 20.