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 in comics inspired by PKNA was released for PlayStation 2 and Nintendo GameCube, entitled "" (sometimes called "Donald Duck PK", or just "PK"). In the game, Donald Duck, guardian of the Ducklair Tower, is transported into the artificial intelligence secret area and tasked with saving the world from the Evronians. He is given special powers, and told that he has become a "platyrhynchos kineticus", an energized duck, or PK for short, stepping around his Paperinik roots. The game received mixed reviews and once represented the only English language use of the name PK. Before the game and after it until 2016 when