Tallmen

In the central plains, there are something known as the Tallmen. They are known by many names by the different inhabitants of the plains, and lots of cultures formed different myths based off of the creatures.

Not much is known of them. They only appear at dusk wandering the plains. They are roughly nine-feet tall, with long spindly limbs. They can walk on air and walk slightly above the ground so that they don’t make a sound, and are completely silent. Nobody really knows what they look like, but they seem to be all black like shadows. There are rumors of Tallmen kidnapping people, and sometimes even brutally murdering them. They are known to be extremely dangerous if provoked, as they are extremely fast and completely silent. So far, there have been no successful attempts to kill any, and most people are afraid to attack them because they have a nasty revenge, sometimes causing blighted crops, sickness, and random fits of insanity within the town. It is unknown how they communicate, but some scholars hypothesize that it may have to do with telepathy or something related. It's unknown where they live during the daytime, and they are too hard to track during night due to their lack of tracks and silence. They have been seen collecting plants and sometimes hauling animal corpses.

It's believed that they are impossible to  hide from, and can see everything in their surround area even without eyes. They never give any indication that they see you unless you enrage them by 1) shining a light on them 2) getting too close (5m) 3) throw anything at them or near them including arrows. They can base the direction it came from and then will charge,

They are thought to be dead people on their way to the afterlife, which is why they walk through the world uninterested. They have been seen with arrows sticking out of their back from dumb travelers who thought they could attack it. If you shoot one with an arrow, you likely won't even know what hit you.