The little cats are diminutive dopplegangers for the cat himself and act as his cheerful helpers. Each cat is successively smaller than his predecessor and is labeled alphabetically. Little Cats A, B, and C are the most prominent of the group, though other alphabetized cats have been seen on occasion. The most notable of the rest is Little Cat Z, the smallest of all, who, in The Wubbulous World of Dr. Seuss, possesses a hipster quality, muttering "Zip zap" and the like. Little Cat Fleep, a character from that same show, made one special appearance in the second season.