Howdy-Doo is a Great Dane puppy, with light brown fur like his sister and mother. He also has a head of red hair that covers his eyes, and wears a blue collar like his brother and a white ribbon on his tail.
Howdy-Doo often reads supermarket tabloids, such as the National Exaggerator.
Howdy attended the Doo family reunion at the Knittingham Puppy Farm. He became friends with Fred Jones, as the National Exaggerator is their favorite newspaper.