Characters in which 1990 film included Mumbles, Shoulders, Flattop and the Brow?

Which musical heroine sings that she is "as corny as Kansas in August"? Characters reject their author in "Six Characters in Search of an Author", a 1921 play by which Italian? Characters in which 1942 ballet include the Head Wrangler and the Champion Roper? Characters in which 1987 movie parody include Lord Dark Helmet and Pizza the Hutt? Characters in which 1990 Oscar winner included Wind in His Hair, Kicking Bird and Lt. John Dunbar? Which carmaker sold both the Charger and the Avenger in the 2000s? Who was Charlemagne's grandfather, whose surname means "hammer"? Brothers Charles and Maximilian Fleischmann started marketing what baking product around 1870?