Donald Duck is a cartoon character created by Walt Disney in 1934. He has three nephews, Huey, Dewey, and Louie. Huey is the oldest of the three and has four letters in his name. Dewey is the middle nephew and has five letters in his name. Louie is the youngest of the three and also has five letters in his name. Together, they are known as 'The Three Nephews' and are often seen accompanying Donald on his adventures.