Katharine is a bit of an airhead, often causing trouble by accident. A recurring gag is her inability to perceive countries outside the United States (an example being that she thought Fuso was located next to Florida). Despite these faults, she does try to get along with everyone. Optimistic, bright, cheerful and sociable. She also was incapable of swimming, however, she loves the sea and the sky. She would be fine with anything, and likes cola and doing her nails.