Huebert, Deuteronomy and Louis Duck, better known as Huey, Dewey and Louie, are Donald Duck's triplet nephews featured in the character's cartoons and comics. Originally introduced in a storyline in the Donald Duck newspaper comic strip, they are the sons of Donald's rarely-seen sister, Della. In animation, the three boys are often seen pulling pranks on their uncle. In comics, however, as developed by Al Taliaferro and Carl Barks, the young ducks are more well-behaved, often assisting Donald as well as their great-uncle Scrooge McDuck in numerous adventures, and they are also members of the scouting organization known as the Junior Woodchucks.
In the classic shorts and comics, the trio had no set way to distinguish them apart (to the point that, in the late 1940s and 1950s, the shorts usually had them wearing the same outfits). But in DuckTales, since the show's stories were more complicated than those in the original shorts, it was deemed necessary to distinguish between the three nephews; thus, it was established that Huey is the one who dresses in red, Dewey dresses in blue, and Louie dresses in green. An easy way for one to remember this, as stated by Dave Smith, is that "the brightest hue is red (Huey), the color of water, dew, is blue (Dewey), and that leaves Louie, and leaves are green."