Snap, Crackle and Pop the early 1990s, but later returned to their original elf-like form. Likewise, there was briefly a fourth gnome in the 1950s named Pow who represented the claimed explosive nutritional value of Rice Krispies. Leo Burnett Worldwide assigned Chicago-based cartoonist Don Margolis to do Snap, Crackle and Pop for the Rice Krispies boxes as well as other applications. Davidson Marketing also used him for their Rice Krispies assignments. Don did the three gnomes until the end of 1998. "Snap", "crackle" and "pop" are terms, based on the Rice Krispies mascots, used for the fourth, fifth and sixth time derivatives of position.
Cocoa Krispies 1960s, Sweep (a dog hand puppet from the popular children's television programme "The Sooty Show") became the mascot for Coco Pops. In 1963, Coco the Monkey was introduced, and he remains the mascot in those countries where the cereal is known as Coco Pops, Choco Krispies, and Choco Pops. In recent years, the design of Coco has been refined to give him a younger look. Coco's friends are Shortie Giraffe, Randy Rhino, Alan Anteater, Heftie Hippo, Fanny Flamingo, Osmelda Ostrich, and Kylie Kangaroo, while Crafty Croc and the gorillas are his arch enemies. In 1986, the cereal introduced the mascot