Sugar Bear and friends
Linus the Lion Hearted was put out by General Foods and Post Cereal in 1964. Featuring the voices of Sheldon Leonard, Carl Reiner, Gerry Mathews, Bob McFadden, Ruth Buzzi and Jesse White (the original Maytag repair man).
Sugar Bear was the advertising cartoon mascot of Post Super Sugar Crisp (later Golden Crisp) cereal, appearing in commercials for the cereal. His consistent nemesis was an elderly woman called Granny Goodwitch; the two would engage in elaborate contests, often involving trickery, magic, and high technology (often one or more of these methods), in order to determine who would gain possession of a box of the cereal.
Sugar Bear originally appeared as a character in the 1963 morning cartoon “Linus the Lion Hearted. Most of the characters in the series were mascots for Post cereal products. Sugar Bear proved the most durable of the lot. Gerry Mathews provided the original voice for Sugar Bear which feature qualities similar to Dean Martin’s. He portrayed a shallow eyed, easy going character. – Wikipedia