The mascot of Cocoa Puffs, Sonny the Cuckoo Bird was introduced in 1962. In television commercials, Sonny attempts to concentrate on a normal task but ends up coming across some reference to Cocoa Puffs themselves (usually described by the adjectives "munchy, crunchy, chocolatey") and bursts with enthusiasm, exclaiming his catchphrase "I'm cuckoo for Cocoa Puffs!"[5] Sonny was voiced by Chuck McCann from 1962 to 1978, and has been voiced by Larry Kenney since 1978.[6] Sonny's name comes from the original format of the commercials, in which he was paired with his grandfather (also voiced by McCann). Rather than proper names, they always referred to each other as "Gramps" and "Sonny." When the grandfather was dropped from the ads, "Sonny" remained as the character's name. In 2010, Gramps returned to the Cocoa Puffs ads, with McCann reprising his role as Gramps and Kenney continuing to voice Sonny. Sonny was designed by Gene Cleaves; animation pioneer "Grim" Natwick, of Fleischers' Betty Boop history, also contributed to the early images of Sonny and Gramps, according to then-contemporaries who collaborated with Natwick.[7] Sonny was originally depicted as wearing a pink-and-white striped shirt, then in 1995 was redesigned, this time wearing 1990s "extreme" clothes and being given a more Disney-esque appearance. In 2004, he was redesigned in a more simplistic fashion, this time without clothing.