1. The emotional impact, shape, or dynamic that a particular musical pitch provides. The subtle change in the pitch character changes the piece from one of hopefulness and peace to one of hesitation and sadness.
2. A fictional character, especially a cartoon person or animal, used to sell a product or say a particular line in an advertisement. The '80s saw the introduction of dozens of cheap pitch characters disguised regular cartoons telling kids to buy all sorts of breakfast cereal and plastic junk. Some of the most widely recognized cartoons started life as pitch characters for everything from cleaning products to cigarettes.