Funko Pop! Animation: Dragon Ball Z S9- Dr. Gero Dr. Gero, or Android 20, is the mastermind behind the creation of Cell and the Red Ribbon Androids. In his ploy to defeat Goku, the Dragon Team, and take over Earth, Dr. Gero has taken on Pop! form to infiltrate your Dragon Ball Z collection. Vinyl figure is approximately 4.5-inches tall.