Nightstalkers are the result of splicing together coyote and rattlesnake DNA, though how or by whom is not known. They howl like regular coyotes but with a rattlesnake's distinct rattle. They appear to have a canine body, but with scales covering certain areas, and a rattlesnake-like head and tail. They also have fangs and forked tongues. A nightstalker's right eye is blue with a round pupil, while the left eye is yellow and has an elliptical pupil, like a rattlesnake's. They lay eggs like reptiles. They have poison and are a danger if you're just starting out.