Night stalkers are the creations of Dr. Borous in the Z-9 Crotalus DNA preservation lab of the Big MT, and are genetic hybrids of rattlesnake and coyote DNA. They growl, howl, and whimper like regular coyotes, but hiss, rattle, and inject venom into their prey like snakes. Their bodies are mostly dog-like, covered in a combination of fur and scales. Their heads and tails, however, are more like that of a rattlesnake, including fangs and a forked tongue. Night stalkers' right eyes are blue with a round pupil, while their left eyes are yellow with an elliptical pupil, like a rattlesnake's. They lay eggs, like a snake, which can be used to prepare Mushroom Cloud. Their blood is also used as an ingredient in antivenom, hydra and nightstalker squeezin's.