High Quality Content by WIKIPEDIA articles! Jack Box (full name Jack I. Box; or simply known as Jack) is the mascot of American restaurant chain Jack in the Box. In the advertisements, he is the founder, CEO, and ad spokesman for the chain. According to the company`s web site, he has the appearance of a typical male, with the exception of his huge round white head, blue dot eyes, black pointy nose, and a linear red smile. He`s most of the time seen wearing his yellow clown cap, and a business suit.