Teenage Mutant Ninja Turtles 1991 Season
List of Teenage Mutant Ninja Turtles episodes


  1. "Planet of the Turtleoids, Part 1"
  2. "Planet of the Turtleoids, Part 2"
  3. "The Turtles and the Hare"
  4. "Once Upon a Time Machine"
  5. "Donatello's Badd Time"
  6. "Donatello's Duplicate"
  7. "My Brother, the Bad Guy"
  8. "Enter: Mutagen Man"
  9. "Napoleon Bonafrog: Colossus of the Swamps"
  10. "Michelangelo Meets Mondo Gecko"
  11. "Michelangelo Meets Bugman Again"
  12. "Leonardo Cuts Loose"
  13. "Muckman Messes Up"
  14. "The Ice Creature Cometh"
  15. "Zach and the Alien Invaders"
  16. "Raphael Versus the Volcano"
  17. "Raphael, Turtle of a Thousand Faces"
  18. "Pirate Radio"
  19. "Landlord of the Flies"
  20. "Leonardo, the Renaissance Turtle"
  21. "Welcome Back, Polarisoids"
  22. "Michelangelo, the Sacred Turtle"

1987 Season1988 Season1989 Season1990 Season1991 Season1992 Season1992-1993 Vacation in Europe sideseason - 1993 Season1994 Season1995 Season1996 Season

Zach and the Alien Invaders
1987 TV series episode
Season Code:
Original airdate 1991
Written by Francis Moss, Ted Pedersen
Episode chronology
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"Leonardo, the Renaissance Turtle" "Welcome Back, Polarisoids"

Zach and the Alien Invaders is episode #123 from season 5 (1991) of the 1987 Teenage Mutant Ninja Turtles cartoon series. This episode was the TMNT version of The Boy Who Cried Wolf.


Zach, the Turtles' young friend, and honorary fifth Turtle, is infatuated with comic books, especially "The Alien Invaders"... but the boy has "cried wolf" once too often as he seems to see aliens everywhere.

Wingnut cartoon






Zach "retires" his Turtle costume when his parents enroll him in the Teen-Hut Military Academy where they hope he will learn some discipline and live in the real world.

But after Zach arrives, he discovers that all his fellow cadets are zombies thanks to two aliens: Wingnut and Screwloose, who are disguised as Colonel Clout and Sergeant Rambo. Wingnut and Screwloose plan to conquer Earth using their "Mind Changer" on the young cadets.

Zach calls the police when Wingnut and Screwloose unleash a Robotic Cockroach onto The City, but they do not believe him. The only ones who might believe him are the Turtles, but he is captured before he can convince them that he is telling the truth.

It is not until the Robotic Cockroach starts attacking some construction workers downtown that Zach's alien invasion story is accepted as fact and not fiction.

Michaelangelo and Donatello arrive at the Ten Hut Military Academy to rescue Zach only to find themselves in need of rescuing.

At the last minute, when Zach, Michaelangelo and Donatello are strapped in the Mind Changer, Zach uses his Turtle-Com to overload the power of the "Mind Changer."

Defeated, Wingnut and Screwloose "beat feet" and Zach is honored as a hero by the city.

Character voices



Home media releases


  • Teenage Mutant Ninja Turtles: Return of the Turtleoid


  • Teenage Mutant Ninja Turtles Season 5
  • Teenage Mutant Ninja Turtles: The Complete Classic Series Collection



  • When Zach tries to get the attention of Donatello and Michelangelo, he bangs on a closed window. In the next shot, the window is inexplicably open, which conveniently allows for Donatello and Michelangelo to hear him yelling.


  • First and only appearance of Zach and Walt's parents, as well as both Wingnut and Screwloose.
  • Final appearance of Walt.
  • Final time Zach wears his Turtle mask.


External links

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