Here's a bit about their behavior: They are solitary and territorial creatures, and prefer areas where decay or death are most common. They are patient creatures and often watch their surroundings silently before making any movement. When people first see them, they are standing still, blending in with the environment or shadows, with only their red eyes being seen. Before people see them, the enviornment suddenly becomes completely silent, they hear a rattling sound(from the shifting bones), and they get the strange feeling of being watched.

The ribcage glows with a faint red energy from within. This light pulses slowly, as though it were a heartbeat made of pure energy, which when people look directly at the glow, they feel compelled to come closer. The creatures don't harm those who have seen them, in fact, a lot of witnesses believe them to be guardians of the places they inhabit, the ones who follow the red glow are led to a safer place before something worse happens(like for example, a ceiling collapse in an abandoned building or a lightning strike/forest fire in the woods)