Boo Berry is the mascot for the cereal of the same name. He was introduced to the General Mills' monster cereal line in 1973, two years after Count Chocula and Franken Berry were introduced.
Appearance
Boo Berry is the name of a advertising character for an eponymous breakfast cereal made by General Mills. He is a ghost that ostensibly eats only the blueberry-flavored cereal named after him. His voice and appearance are consciously reminescent of the famed actor, Peter Lorre. Boo Berry is a benign character rather than a malicious monster. His associates include Franken Berry, Count Chocula, Yummy Mummy, Fruit Brute and Carmella Creeper.