After Louie becomes the richest duck in the world, he unknowingly releases an ancient unstoppable monster cursed to hunt down and destroy the richest duck in the world to which Scrooge must protect him. Meanwhile, Della attempts to contact her friend Penumbra on the Moon.
- David Tennant as Scrooge McDuck
- Danny Pudi as Huey Duck
- Ben Schwartz as Dewey Duck
- Bobby Moynihan as Louie Duck
- Kate Micucci as Webby Vanderquack
- Beck Bennett as Launchpad McQuack
- Paget Brewster as Della Duck
- Natasha Rottweil as Zan Owlson
- Marc Evan Jackson as Bradford Buzzard
- Julie Bowen as Penumbra
- Keith Ferguson as Johnny, Randy, Mr. Zee
- Fred Tatasciore as Bombie
- Sam Riegel as Gavin
- This marks Bombie the Zombie's first appearance in animation. Previously he only appeared in the Donald Duck and Uncle Scrooge comics created by Carl Barks.