Appearance.
Various descriptions of the second entity exist. Most agree that it was at least 10 feet (3 m) tall and that it had a red face which appeared to glow from within, and a green body. Witnesses described the creature's head as having bulging, non-human eyes and as either being shaped like a heart, or as having a large heart shaped cowling behind it. The creature's body was described as being man-shaped and clad in a dark pleated skirt; later described as being green. Some accounts record that the creature had no visible arms, while others describe it as having short, stubby arms; ending in long, claw-like fingers, which protruded from the front of its body.
Associated with the Flatwoods Monster it was described a large, pulsating, red ball of light that hovered above or rested upon the ground. Ufologists believe that it may have been a powered craft that was piloted by the second entity.
Sickness.
After encountering the creature, several members of the September 12 group reported being overcome with similar symptoms which persisted for some time, which they attributed to having been exposed to the mist emitted by the creature. The symptoms included irritation of the nose and swelling of the throat. Lemon suffered from vomiting and convulsions throughout the night, and had difficulties with his throat for several weeks afterward.
A doctor who treated several of the witnesses is reported to have described their symptoms as being similar to victims of mustard gas, though such symptoms are also commonly found in sufferers of hysteria, which can be brought on by exposure to a traumatic or shocking event.