Balloon Boy is a human-like animatronic with a round body, peach-colored skin, large blue eyes, an orange triangular nose, red-brown hair, and a toothy grin. Like the other new animatronics, he has blushed cheeks, which are colored rosy red.
He wears a red and blue vertically striped shirt with two black buttons down the middle. The propeller cap he wears bears the same pattern. He wears blue pants and simple brown shoes. His arms are stubby and thin with fingerless, round hands. 