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 Coco Rocks, Coco Pops Straws, Coco Pops Moon & Stars, Coco Pops Choc-N-Roll and Coco Pops Croc Prints (shaped like Crafty Croc's feet) have also been released by Kellogg's in some countries. Chocos were introduced in some countries as Coco Pops Mega Munchers. A chocolate flavor porridge variant had been available in the end of 2000s called Coco Pops Porridge, but didn't last long. Since 2014, they have been brought back. In February 1998, the British arm of Kellogg's renamed the brand in the country Choco Krispies, so it would be similar to the way the product was branded in