The Duck is the main protagonist of the Duck Life series, appearing in all games, in different colors and sizes. It is mainly depicted as a yellow duck, with green pupils, although with Duck Life 2: World Champion, you can change the skin color of the Duck, and Duck Life 3: Evolution, where your duck evolves after completing the 6th race in each league (Beginner, Advanced, and Professional), causing a change of appearance. In Duck Life 4, the player can customize their duck in many more ways, and will not evolve. It has no primary depiction in this game due to the customization options. In Duck Life: Treasure Hunt, the duck goes back to its traditional appearance.