Dr. Hi is a 24½th century scientist who found and thawed Duck Dodgers. In both of the Duck Dodgers original shorts, he works as the Secretary of the Stratosphere, while in the TV series his role was expanded to Chief Scientist of the Galactic Protectorate and Dodgers' boss. In almost all his appearances, he is the one who informs Duck Dodgers of new missions. He appears to be quite rich, as he resides in an antique castle with many commodities which is accidentally destroyed by Duck Dodgers later on. In "Of Course You Know, This Means War and Peace" Pt. 1, it is revealed that he has a brother named Dr. Psy-Q. High (voiced by John Billingsley).
He is a short, fat guy with a long thin nose and a hairstyle reminiscent of Larry from the Three Stooges, bald with some red hair on the sides. In the series, he always wears a lab coat, a strange hat with a lightbulb on it and extra-large rubber gloves.