"Ever experience an evil or a 'shadow person?'"
Yup.
A few times when I was a little kid.
Then, when I was about 19, I almost hit one with my car. A friend was in the car with me, and he saw it, too.
To me, it looked like a seven-foot tall man with a bag on his head for a hat. I swerved the car because I thought I was about to hit the person. I turned back to look for this man, but he was not there. My friend freaked out. I turned to my friend and asked if he was okay. I said I was sorry, but I thought I was about to hit a guy. My friend said he wasn't afraid of having a wreck, but he was afraid of the man that he also saw.
He later told me this entity was a common phenomenon in his old neighborhood (where we swerved).
Ever since then, we referred to this creature as the Scarecrow Man.