Ah I've had some interesting encounters with hatman/shadowman,
He always appears in on location, my friends basement, under extreme inebriation.
Its strange, its always a shared visual, moving the same way for all people involved.
He darts around corners in one corner of the room, almost toying with you. He has a mischievous smile, very evil looking. But I've become so familiar with him that his presence is no longer threatening. He appeared first after my friend and I smoke a large quantity of cannabis after a 7 month tolerance break. It was so strange how he showed up at the same time for both of us, we both physically reacted to his advances in the same manner, it was insane.
Now I talk like this shadow man is a sentient being, but don't get me wrong, I'm not schizophrenic or anything, but dabbling in insanity like that is kinda fun haha.