On a site dedicated to making a wiki history of all things comics, comics ads should not be forgotten. Especially the ads for Hostess Fruit Pies, Twinkies, and other snacks. Starting in 1975, Marvel and DC heroes (and the Harvey characters!) spent seven years throwing Hostess snacks at a bizarre line of villains to stop their crimes. Although many of the villains were completely silly, they were created specifically for these ads, and in many cases, not even the names have been used again, since the ads stopped in mid-1982.
So I thought I'd show an ad here, and make a list of the comics I find it in, as I run across them. This list features: Shazam! The Word's Mightiest Mortal Fights the...Minerva Menace! As noted on the Hostess Superhero Advertisements page:
Using a mind-control machine, the elderly Aunt Minerva attempted to convince children that her way of thinking was best - which included disliking Hostess Twinkies. Freeing himself from captivity, Billy Batson turned into Shazam and set about ending the mental broadcast.