 The alien weapon, described by the cast and crew as "the ice pick", was done with an air hose that ran through Brian Thompson's arm.To create a unique and otherworldly sound made by the weapon used by the hunter, several sound effects were considered before co-producer Paul Rabwin voiced the noise himself on a microphone.Carter had initially wanted to set the first season episode "Ice" at the North Pole, but this was too ambitious at the time.