Great and memorable characters, such as Scrooge, the Beagle Boys, and much, much more.
Catchy and iconic theme song.
It helped prove that high quality TV animation was worth investing in, and helped put Disney on the TV animation map after years of only being a hit in terms of movies. Gummi Bears also helped by doing the same thing.
Excellent and exciting storylines for the episodes.
Very pioneristic and "brave" concept of a tv series focused on characters created by Carl Barks rather than having Donald Duck as the main character, who only appears in a few episodes.
Other extra, non-duck characters appear in the show, like The Phantom Blot and Peg-Leg Pete.
Spot on voice acting for the characters, with the highlight of the cast arguably being Alan Young, who was capable of giving an iconic voice to Uncle Scrooge.
Most of the cast is very flat, especially Webby and Gandra Dee.
A lot of the episode plots after the first season are very simplistic and haven't really aged well.
The animation after the first season began to slowly drop in quality compared to the first season.
DuckTales was not only popular in the United States of America, it was also popular in Asia and in Europe (especially in Italy), too.