The name of the most popular green rooster on the box of Kellogg's cornflakes is Cornelius (Corny) Rooster, which has been his name since he debuted as a mascot. In the earlier commercials, he had a speaking part and his catch phrase was "Wake up, up, up to Kellogg's Cornflakes!"

Originally, Cornelius was voiced by Dallas McKennon and Andy Devine. Later, he stopped talking and simply crowed. The actual concept of using a stylized rooster originated from a suggestion by a Welsh friend of the Kellogg's family named Nansi Richards.

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