Cheng Yi's appearance in most of the Mediacorp series or sitcoms are either mere cameos, or as a guest starring in that particular episode of the series. He made his first appearance in The Unbeatables III as a supporting role. He appeared in a few episodes of that series, portrayed as a mere rogue who works with the Cobra Organization of G.I. Joe. As a touch of humour, the series also made Cheng Yi into a homosexual and have Ix Shen play out the gay stereotypes which infuriated the homosexual community when the series aired.