Kenny & Company was very popular in Japan. A year after finishing the movie, Don Coscarelli took A. Michael Baldwin, Dan McCann, and Jeff Roth on a tour of Japan where they were met by throngs of teenagers. After the release of his next feature film, Phantasm (1979), Don Coscarelli returned to Japan, and found Michael Baldwin's name on a list of best actors. Coscarelli noted that Baldwin was number seven on the list, ahead of Sylvester Stallone.
Noting the excitement of test audiences during the "haunted house" scene in Kenny & Company, Don Coscarelli was inspired to make his next film, Phantasm (1979). Many of the actors returned for that project including A. Michael Baldwin, Kenneth V. Jones, Terrie Kalbus, and Reggie Bannister.
Don Coscarelli's mother plays Kenny's mother in this film. She would later be cast in Phantasm (1979) as well.
The dummy that Doug and Kenny make for the prank looks very similar to Angus Scrimm who would go on to play the Tall Man in Phantasm