creature assistant: Chris Walas Inc.
special effects crew
floor effects supervisor
special effects senior technician
creature technician: Chris Walas Inc.
creature technician: Chris Walas Inc. / sculptor
drag contact lens
special makeup supervisor: Chris Walas Inc.
special effects assistant
special effects technician
special effects
special effects supervisor
special effects crew: MacDonald (as Bob MacDonald Sen.)
model maker
creature technician: Chris Walas Inc. (as Margaret Beserra)
special effects supervisor / special effects
mechanical supervisor: Chris Walas Inc.
special effects foreman
creature assistant: Chris Walas Inc. (as Wim van Thillo)
effects producer: Chris Walas Inc.
aliens creator and designer: Chris Walas Inc. / special creature makeup and effects director: Chris Walas Inc.
location effects supervisor: Chris Walas Inc.
special effects (uncredited)