Format
The format of the show in the tradition of classic children's television shows in the vein of Bozo the Clown: the show would begin with the same pre-recorded sequence and lead into a live studio audience of children chanting "Koopa! Koopa! Koopa!" at the beginning of the show. The audience of children were all given special hats shaped like Koopa heads and T-shirts with "Koopa's Troopas" printed on them (the children would actually get to keep the shirts, but the troopa helmets, as they called them, were claimed by the producers at the end of the taping and reused every show).
The live-action Koopa would then act as emcee, introducing old, public domain animated cartoon shorts for the length of the show (none of the actual Mario cartoons that were produced were ever shown). King Koopa would end the show by giving a child gift certificates or NES products, particularly the Power Glove, which was a popular toy for the Christmas holiday season.
Read more about this topic: King Koopa's Kool Kartoons