Old Red-eye is a folk tale from the area of the Pine Barrens, in the state of New Jersey. It is believed to be a bipedal primate, possible a relative of its west coast counterpart, Sasquatch.
Its not inaccurate to describe the creature as a mountain of matted, black fur, with some of its only distinguishable features being its lanky limbs, and the eerie, red glow of its eyes.
Approach with caution if at all, Red-eye is known to be quite territorial, and its surmised that a not insignifigant amount of the hikers that go missing in the Pine Barrens every year are thanks to Old Red-eye.

Possible sighting of Old Red-eye

House-sitters are a variety of lingering spirit that is bound to a specific abode, usually one they used to inhabit or that they were tasked with taking care of. Often times they are unaware of their own death, and are just operating off of memories of their old responsibilities.
Largely harmless, these spirits will follow whatever routine or standards they held in life, such as keeping a space clean, maintaining a collection of sentimental items, or even tending to guests. However, like most spirits, they are not to be taken lightly, as actions that go against a house-sitters goals can cause them to label someone an unwanted guest.
A house-sitter will take any effort to remove an unwanted guest, this can depend on their temperament in life, and usually starts polite but firm. If these initial warnings are ignored, an investigator risks being sent much more intense and possibly even dangerous messages. The best way to deal with these spectres is to follow their rules, which must be gleaned from context clues, based on how the house is maintained, and any information you have on its inhabitants from years past. If you respect their dwelling, you should be safe to explore without fear of repercussions, and may even find yourself a temporary ally.

A house-sitter, reaching down to turn off a light that has been left on.

Keepers are a variant of house-sitter, with the key distinction that their goal in life was to guard a location against intruders, or to prevent a specific oject from falling into the wrong hands. These spirits are much more territorial and violent than their homebody counterparts, and must be regarded with extreme caution.
Overall one should avoid a place that is being watched by a keeper unless absolutely necessary. However, in events where it is necessary to cross into their territory, it is best to study them for a while beforehand, to get an idea of their habits and routines. Once you have an idea of where they spend most of their time, and the areas they avoid, you'll have a much better idea of what areas are safe to traverse and when.
If your attempts at stealth are unsuccessful and you are spotted, run immediately. You will not get a polite warning from a keeper, and the price of whatever equipment you have to leave behind is note worth your own life.

A keeper, catching sight of an intruder in its abode.