The movie was shown in cinemas only in Germany before getting a home video release.
The Tanners, the family who appeared in the ALF TV series do not appear in this film. But they are only mentioned. They were placed in the Witness Protection Program.
Paul Fusco (ALF) and Beverly Archer (Dr. Carnage) are the only actors to appear in both this film and ALF (1986).
Originally, ALF (1986) was supposed to end with a 5th season. However, it was canceled after 4 seasons. They used the original idea of ALF living in a military base to write this movie. There was another idea for the show where ALF would be rescued by other survivors of his home planet, but it wasn't included here.
William O'Leary and Jensen Daggett had recurring roles in Home Improvement (1991) as husband and wife, Marty and Nancy Taylor.