The kids are pulled into a world made of their wildest dreams; Lena's worst nightmare comes true, as Magica De Spell returns to reclaim what's hers.
- 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
- Catherine Tate as Magica De Spell
- Kimiko Glenn as Lena
- Libe Barer as Violet Sabrewing
- Toks Olagundoye as Mrs. Beakley
- Susanne Blakeslee as Miss Quackfaster
- Phooey Duck makes his debut, albeit as a dream construct conjured by the triplets.
- Phooey's clothes color is also a reference to Dewey's original clothes color when he was first designed.
- Lena's wolf form bears a striking resemblance to the wolf from The Sword in the Stone.
- The title is a reference to A Nightmare on Elm Street.
- Lena is technically barefooted for the entire episode, since she's only seen wearing her normal clothes in dream world.
- Louie as a cat during his dream bears a resemblance to Garfield.
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