A night stalker's right eye is blue with a round pupil, while the left eye is yellow with an elliptical pupil, like a rattlesnake's. They even consume food like snakes by attempting to swallow their prey whole. Their head and tail are that of a rattlesnake, including fangs and a forked tongue. Their bodies are mostly dog-like, covered in a combination of fur and scales. Night stalkers growl, howl, and whimper like regular coyotes, but hiss and rattle like snakes. Adam Figgis thought the executives in charge of X-8 could salvage the mishap in shipping and decided to let the night stalkers loose into the X-8 testing area to study their behavior. The shipping department of the X-8 research center suffered a large number of fatalities all but one employee ( Skippy) was killed by the night stalkers. The creation of night stalkers proved to be a risky gamble. However, his memory was unclear, and he also suggested that it may have been because of a dare with Dr. Borous created nightstalkers in order to preserve the DNA of rattlesnake, which was on the verge of extinction. Borous at Big MT, being genetic hybrids of rattlesnake and coyote DNA.
