Donald Duck universe
Donald Duck and his maternal uncle Scrooge McDuck received nearly equal exposure in comics. Other primary characters include Donald's three young nephews Huey, Dewey, and Louie, and girlfriend Daisy Duck.
Donald's Nephews
Donald receives a postcard from his sister, Dumbella, which says that her three boys, Huey, Dewey, and Louie, are coming to visit him. At first Donald is excited to see his nephews, but soon the boys start causing problems, being a constant annoyance to their uncle.