JuniorWoodchuckGuidebook (1) Just added it!
This article is a stub. You can help DuckTales Wiki by expanding it

"Terror of the Terra-firmians!" is the fifth episode of the Disney XD animated series, DuckTales. It first aired on October 7th, 2017.


Huey and Webby’s disagreement over the existence of a Terra-Firmians leads the kids to explore an eerie abandoned subway tunnel, while Mrs. Beakley grows suspicious of Lena.


The episode begins with Huey, Dewey, Louie, Webby, Lena, Mrs. Beakley, and Launchpad walking out of a movie theater. Huey and Webby get into an argument about whether mythical creatures, such as Terra-firmians are real. Lena than suggest they go explore the subway tunnels to see if they can find any Terra-firmians. As the kids sneak into the tunnels, Launchpad starts ripping up a poster. He tells Beakley how anyone could be a mole-person, even Dewey.



"Woo-oo!", "Daytrip of Doom" and "The Beagle Birthday Massacre!"
  • This episode is loosely based on the Uncle Scrooge comic "Land Beneath the Ground!" by Carl Barks, which was also adapted as "Earth Quack", an episode of the original DuckTales. Unlike the comic and the 1987 episode, however, Scrooge and Donald are oddly absent in this version (making this the third consecutively aired episode where Donald is absent). The great games are only mentioned and not shown, and the story takes place in an abandoned subway tunnel and not under the Money Bin.
  • This is the first episode to air in October.
  • Scrooge McDuck is absent for second time.
  • Donald Duck is absent for third time.


  • TBA


  • TBA


View Gallery
Click here to view this page's gallery.

See Also

vedDuckTales Episodes
Season 1
"Woo-oo!" | "Daytrip of Doom!" | "The Great Dime Chase!" | "The Beagle Birthday Massacre!" | "Terror of the Terra-firmians!" | "The House of the Lucky Gander!" | "The Infernal Internship of Mark Beaks!" | "The Living Mummies of Toth-Ra!" | "The Impossible Summit of Mt. Neverrest!" |"The Missing Links of Moorshire!"
Unknown Season
"Untitled Darkwing Duck Crossover"