Ernie Bushmiller's Nancy made her TV debut on Archie's TV Funnies in 1971. Seven years later, she returned, along with best pal Sluggo, on another Filmation series, The Fabulous Funnies. In each case, only one season's worth of episodes were produced, and the shorts are very hard to find.
One constant? Sluggo was, and always has been, about as sharp as a box of soggy toothpicks. Evidence of this is in this 1978 entry, "Fernell Smells", uploaded by XOtericate: