 When Centron began work on this movie for Spencer Chemical Company  in 1954, they decided to work Spencers trademark, Mr. N, into the  film, and thats when Billy Barty, famous Hollywood midget who was  appearing on the Spike Jones and Pinky Lee TV shows, came into the  picture. Barty was to wear a strange little green costume and when  he first arrived at the studio, director Herk Harvey asked him, "Did  you bring the costume I wanted you to bring?" Barty answered, "Oh,  no, Herk, I forgot!" But Barty, with his wacky sense of humor, was  just kidding.