Disney's Haunted Mansion is home to a trio of Hitchhiking Ghosts. Which of these is NOT one of them?

The answer is Harry because Harry is not one of the Hitchhiking Ghosts found in Disney's Haunted Mansion. The trio of genuine Hitchhiking Ghosts consists of Ezra, Phineas, and Gus, who are well-known characters within the attraction. They are often seen trying to catch a ride with the guests, looking mischievous and presenting a playful presence. Therefore, Harry does not belong to the group of Hitchhiking Ghosts, making him the correct answer.