The Headless Horseman is an archetype of mythical figure that has appeared in folklore around Europe since the Middle Ages. The figures are traditionally depicted as riders on horseback who are missing their heads. From Wikipedia
Colorful homage to Disney's legacy: Co-hosts dress as characters from Toy Story, Aladdin, Encanto, and more, with unprecedented transformations, including Sunny Hostin painted head to toe blue as Avatar's Neytiri.