While attempting to protect the money bin, Scrooge's new accountant accidentally becomes the superhero Gizmoduck. The fourth and final DuckTales television movie.
| Actor | Role |
|---|---|
 Hamilton CampGizmo-Duck / Fenton Crackshell (voice) | Gizmo-Duck / Fenton Crackshell (voice) |
 Miriam FlynnGandra Dee (voice) | Gandra Dee (voice) |
 June ForayMa Beagle (voice) | Ma Beagle (voice) |
 Kathleen FreemanMrs. Crackshell (voice) | Mrs. Crackshell (voice) |
 Joan GerberMrs. Beakley (voice) | Mrs. Beakley (voice) |
 Chuck McCannDuckworth / Burger Beagle / Bouncer Beagle (voice) | Duckworth / Burger Beagle / Bouncer Beagle (voice) |
 Terence McGovernLaunchpad McQuack (voice) | Launchpad McQuack (voice) |
 Hal SmithGyro Gearloose / Guard Robot (voice) | Gyro Gearloose / Guard Robot (voice) |
 Russi TaylorHuey / Dewey / Louie (voice) | Huey / Dewey / Louie (voice) |
 Frank WelkerBig Time Beagle / Megabyte Beagle / M.E.L / Country Twanging Toast Timer (voice) | Big Time Beagle / Megabyte Beagle / M.E.L / Country Twanging Toast Timer (voice) |
 Alan YoungScrooge McDuck / Prison Guard (voice) | Scrooge McDuck / Prison Guard (voice) |