Playing the film's title character, Schwarzenegger, because of his long last name and to play off the name of fellow cast member comedian Arnold Stang, is credited as "Arnold Strong 'Mr. Universe'". At the time filming began, Schwarzenegger had just come in first place in both professional and amateur Universe Championships. Production of the film coincided with his training for the competition for the second year in a row, and after it ended he won the professional title again, beating Park.