The household housekeeper. While she often seems to snark at Scrooge, she actually respects him to some extent. She helps Huey, Dewey, and Louie a lot. She is a female duck and has a granddaughter named Webby.

A tomboyish duckling who wants to go out into the world and experience many things. Due to her grandmother Bentina Beakley's overprotectiveness, she had never even eaten a hamburger and dreamed of going outside. Her grandmother taught her self-defense, giving her excellent physical abilities. Despite the strictness, she loves her grandmother. She is 12 years old and the granddaughter of Bentina. She loves collecting information about Scrooge. Her full name is Webbygail Vanderquack.

The most calm and sensible of the triplets, he always carries and refers to the Junior Woodchuck Guidebook. While Louie is clever in a mischievous way, Huey is a bright boy who uses the knowledge he reads in books for good. He is 12 years old and the son of Donald Duck. His mother, Della Duck, was lost during a space mission. He is close with Robo. His full name is Hubert Duck.

The most adventurous and action-oriented of the triplets. However, his impatient nature often leads him to jump into things too quickly and get into danger. He is also a very good dancer. He is 12 years old and the son of Donald Duck. His mother, Della Duck, was lost during a space mission. He is close with Robo. His full name is Dewford Dingus Duck.

He looks relaxed and lazy, but he is said to be the most cunning of the triplets, showing a materialistic side by already eyeing Scrooge's treasures and money. He even created his own business called "Louie Inc." to find ways to make money quickly. He doesn't seem active and acts nonchalantly, but he is smart and good at judging situations. He is 12 years old and the son of Donald Duck. His mother, Della Duck, was lost during a space mission. He is very, very close with Robo. He isn't just a money-grubbing fool; he has a lively side too. His full name is Llewellyn Duck.

When Huey, Dewey, and Louie first arrive, his relationship with Donald Duck has soured, and they live almost like strangers; he seems to have lost his passion for adventure. However, as he cleans up the messes made by the triplets and Webby, his fading adventurer spirit is revived, and he begins adventuring again. He is the great-uncle of Huey, Dewey, and Louie. He knows Guest is a butler robot and places importance on Guest's 'status' as a butler. He doesn't show much sign of aging.

The nephew of Scrooge McDuck and the uncle of the three triplets (Huey, Dewey, and Louie). Although he often appears in a comedic light, his combat ability is considerable. He is shown to be capable of fighting final bosses and was skilled enough to fight monsters or F.O.W.L. agents even when he was young. His nephews are Huey, Dewey, and Louie. He is Della's twin brother. He has a lean physique with neither fat nor much muscle.

She has a past romantic history with Scrooge. She is a great beauty and doesn't show much sign of aging. She enjoys romantic sword fights and dancing with Scrooge. She doesn't care much about the status of a butler robot.

He can pilot and repair almost anything a person can drive—cars, planes, submersibles, boats, trains—but due to his dim-witted nature, he crashes into everything just driving a car. As in the original, he still can't land properly and often ruins things by falling asleep or talking while driving.

The mother of Huey, Dewey, and Louie who went on a space mission before her sons' eggs hatched and crash-landed on the moon for some reason. She spent 9 years without word, looking for a way back to Earth. She is lively, persistent, and full of personality. She has mechanical goggles but is actually terrible with machinery. She is Donald's twin sister. She is close with Robo.