 The Gruesomes are replaced in later spin-off series by The Frankenstones, another monster-themed family who move next door to the Flintstones.In the "Fred & Barney Meet the Frankenstones" episode of "The New Fred and Barney Show", which aired on September 15, 1979, a couple who closely resembles the Gruesomes attend a dinner party at the condominium where the Frankenstones are resident managers.In 1977, a family similar to the Gruesomes were introduced as part of the "Laff-A-Lympics" segment on "Scooby's All-Star Laff-A-Lympics".