 The only four panelists who appeared on every season of the 1990s incarnation of the show were Kopelow, Bynes, Tamberelli, and Irene Ng.The first seat on the panel was usually reserved for an adult panelist, either an adult actor from a Nickelodeon program (usually Kopelow) or a non-Nickelodeon celebrity (such as Taran Noah Smith of "Home Improvement").In several episodes, CatDog, rendered in CGI, and Cousin Skeeter, a puppet character, were panelists, but never at the same time.