- In "Where No Duck Has Gone Before", Major Courage calls Launchpad "L.P." The next person to use that nickname would be a lot friendlier.
- In "All Ducks on Deck," the Phantom Blot was boasting about how evil he is by saying, "I am the Phantom Blot! I make Darth Vader look about as scary as a hood ornament of a 53 Buick! Compared to me, Dr. Doom is a wimp!" Guess what franchises Disney eventually came to own?
- In "A DuckTales Valentine", Scrooge is struck by a curse which is only broken by the power of true love, of the platonic variety. To some degree, it seems like an early attempt to write a story with the Aesop of Frozen.
- In "The Land of Trala La", Fenton introduces the concept of money to primitive islanders by using bottle caps as currency. A decade later, a video game franchise would feature the same concept.
- In this series, Gizmoduck is voiced by Hamilton Camp. In the reboot, he's now voiced by an actor best known for playing a character named Hamilton.
- The episode 'Robot Robbers' features Scrooge giving Launchpad a lift home but warning him, "Don't ask to do the driving". Come the 2017 iteration of the show and Launchpad is Scrooge's limo driver (among many other vehicles, granted).
- In "Home Sweet Homer," Scrooge, after the effects of the Sirens' song wear off, asks, "Ever hear a song you can't get out of your head?" Now that his series is famous for having one of if not the most relentless ear worms of all time, he sounds like he's Leaning on the Fourth Wall.
- "Dime Enough for Luck" has Magica De Spell trick Gladstone Gander into stealing Scrooge's Number One Dime using the illusion of a game show host voiced by Corey Burton and Gladstone losing his good luck because of unwittingly using it to help Magica. The video game Donald Duck: Goin' Qu@ckers would later have Gladstone become the game's Butt-Monkey by constantly being injured for comedic effect and had him voiced by Corey Burton to boot.
- In "Sir Gyro de Gearloose" Gyro builds a time machine out of an old bathtub. Over two decades later, a film featuring a time-travelling hot tub would be released.
- In "New Gizmokids On The Block", Ma Beagle's last appearence, she and her boys grab the triplets and she tells her sons to tie them up for ransom. Her debut in the reboot has her call out her sons for doing the exact same thing, because that'd paint targets on their backs.
Hilarious In Hindsight / DuckTales (1987)