Before examining the portrayal of Old Green Eyes' features, it's worth noting the conditions in which he is generally seen.
It's always at night, or during the twilight, when visibility is lessened. Chickamauga is also prone to localized fog and misty patches. This too may hinder what people are able to see.
Moreover the location tends to be on the woodland and mountain pathways, not in the center of the battlefield itself. There is foliage to hide certain aspects of the creature.
Old Green Eyes has never appeared in the open, on a bright, sunny afternoon, where every detail can be duly noted and cataloged; nor has a photograph been taken.
During the 1970s, a man from New Mexico was surprised in the Chickamauga National Park by Old Green Eyes. He stated that it was a 'black, shadow-like human with a glowing face with a large nose. But it wasn't human.'
In 1981, a park ranger named Edward Tinney encountered the creature. What do you make of this description?
"I could see his hair was long like a woman’s. The eyes - I’ll never forget those eyes - they were glaring, almost greenish-orange in color, flashing like some sort of wild animal. The teeth were long and pointed like fangs. It was wearing a dark cape that seemed to be flapping in the wind, but there was no wind. I didn’t know whether to run or scream or what. Then the headlights of an approaching car came blazing through the fog, and the thing disappeared right in front of me.”
Earlier eye-witness accounts don't mention a cape. Those seeing it on Snodgrass Hill, in the immediate aftermath of the battle, talked of light colored hair cascading down its back. But they too talked about the fangs, the unusual jawline and the glowing green eyes. The visage looked like an ape.
A later meeting involved a local boy scout, who spotted the creature on the Lafayette Road, near to the Florida Monument. He said that it was bipedal and covered in hair. He estimated that it stood around 7 and a half feet to eight feet. It ran at great speed on two legs for a short distance, before dropping onto all fours to gallop into the woods. Due to its great size, he would have assumed he'd seen a grizzly bear. But that species isn't native to Georgia.
Mostly what people describe are those eyes. They are glimpsed as eye shine, or animal eye flashes in the darkness. They are invariably green or orange-green. Generally people are walking along the woodland trails at night, when they spot those eyes deeper amongst the trees.
Only rarely is Old Green Eyes spotted out in the open. That's often in the vicinity of the Wilder Tower, which is where a lady named Wendi spotted it in 2002. She was driving on a road alongside the park, when the eye shine caught her attention. She parked up to get a better look.
The creature was mostly in silhouette, but she could clearly see that it stood on two legs. She estimated his height to be around 7ft. Each time it turned, she saw the eye shine again, as glowing green eyes.