A male, blue-purple duckling who wears a white sailor's hat. He is older than Peep and Chirp, as they are still chicks. He frequently boasts about himself and ducks as a whole, and unwittingly makes many discoveries. Quack is purple in the original short film and is now referred to as blue, but is still quite indigo. He also seems to have a hoarding issue, as evidenced in the episode "An Inconvenient Tooth, Part 1."