Another 12-chapter "rocket man" movie serial,
Zombies of the Stratosphere, was written as the direct sequel to
Radar Men from the Moon. The name of the serial's main character was changed from Commando Cody to the more prosaic Larry Martin when the shooting schedule began. This lead character renaming happened after the footage was shot for the first three episodes of Republic's proposed science fiction syndicated television series,
Commando Cody: Sky Marshal of the Universe. This was first released (for contractual reasons) to movie theaters instead of TV. Republic, meanwhile, released both of the "rocket man" serials during 1953. A feature film was made from the
King of the Rocket Men serial called
Lost Planet Airmen, later inspiring the name of the rock group
Commander Cody and His Lost Planet Airmen. Because of
Sky Marshals original television production origins, the greater length (approximately 25 minutes) of its weekly serial chapters, and their lack of traditional cliffhanger endings, many serial fans refuse to acknowledge the theatrical release of
Sky Marshal as a true movie serial. This is despite its having been released weekly to theaters and having a storyline that progresses through a dozen numbered and titled "chapters" until the villain is finally defeated in the 12th.
Sky Marshal was finally syndicated to
NBC television in 1955 as a dozen 30-minute episodes (including commercials). == Confusion with other serials ==