At Dancer Fitzgerald Sample in 1960, Biggers teamed with Chester Stover, Treadwell D. Covington and artist Joseph Harris to create TV animation in formats devised to sell General Mills breakfast cereals.
In 1995, Biggers, Stover, Covington and Harris sold their creations to Lorne Michaels, who sold the rights to Little Golden Books, which published Underdog and the Disappearing Ice Cream.