Nightcrawlers are a predatory, omnivore species that were made from goo, but their scales have hardened to be near bullet proof, except for around the chest, and stomach region. Made to protect and scare intruders off, but proved to be a failed experiment, as they were also trouble to the staff and some enjoyed messing with them. They pack a strong punch, but, they can also use intimidation if they don't feel like fighting. Since most are just infected people, their personality can vary.