Donald Duck universe and keeps it on a pillow under glass because of its sentimental value. Donald Duck, Huey, Dewey, and Louie, and Gladstone Gander among many others think it is really a lucky charm, but Scrooge himself rejects any claims beyond sentimentality. 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. Several secondary characters have also achieved star status in certain publications, such as Grandma Duck, Donald Duck's grandmother; Gladstone Gander, Donald Duck's incredibly lucky cousin; Gyro Gearloose, an inventor who
Donald Duck Disorder; said theory mentioned can also be found on YouTube. In effect, much like Bugs Bunny cartoons from Warner Bros. the Disney artists had reversed the classic screwball scenario perfected by Walter Lantz and others in which the main character is the "instigator" of these harassing behaviors, rather than the butt of them. The short 'Clown of the Jungle' (1947) very much feels like either a Daffy Duck or a Woody Woodpecker cartoon. The post-war Donald also starred in educational films, such as "Donald in Mathmagic Land" and "How to Have an Accident at Work" (both 1959), and made cameos