Terror of the Terra-firmians!

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

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

Cast

 * Kate Micucci as Webby Vanderquack
 * Danny Pudi as Huey
 * Ben Schwartz as Dewey
 * Bobby Moynihan as Louie
 * Kimiko Glenn as Lena
 * Toks Olagundoye as Bentina Beakley
 * Beck Bennett as Launchpad McQuack
 * Catherine Tate as Magica De Spell
 * Fred Tatasciore as Red Terra-Firmian/Theatre Manager
 * Cree Summer as Pink Terra-Firmian

Trivia

 * This episode is loosely based on the 1987 episode, "Earth Quack", the only difference is that Scrooge is absent in this episode.
 * This is the third consecutively aired episode where Donald Duck is absent.