The Green Slime
Directed by Kinji Fukasaku
Written by Bill Finger, Tom Rowe and Charles Sinclair; story by Ivan Reiner
1968/Japan/Italy/US
IMDb link
First viewing/Amazon Instant

[box] Commander Jack Rankin: Wait a minute — are you telling me that this thing “reproduced” itself inside the decontamination chamber? And, as we stepped up the current, it just… it just GREW?[/box]

Bad movie made worse by its love triangle subplot.

Astronauts must destroy an giant asteroid heading on a collision course with Earth.  In so doing they pick up a small amount of green slime that grows up to be Japanese children in ludicrous rubber suits.

The best thing about this really bad movie is its hilarious US theme song.  You have been warned.