Nikto's toy

The Nikto's toy appears in the in the episode Invasion of the Turtle Snatchers. It is shaped like the monoliths from 2001: A Space Odyssey.

When Klaatu, Barada and Nikto went on vacation to, Nikto forgot the toy. Later, the Earthlings construct a reactor above, causing the toy ro risk meltdown, causing destruction of all lifeforms on Earth.

Klaatu, Barada and Nikto fly back to Earth in their spacecraft, to retrieve the toy. When 's raygun hits the toy, the meltdown process begins. saves the day by unplugging the batteries.