The 'Look-&-Go' is/was an entity that I encountered when I was roughly 14/15 in a nightmare/ sleep paralysis that felt really odd and terrifying.
In this nightmare, I 'woke' up, and could 'see' a creature clawing at my wardrobe, across the room. It was hunched over, with the bottom half of it out of focus, clawing at the upper part of my wardrobe, while I could sense it had not 'seen' me yet. I continued watching it for maybe a minute or two, takig in what it looked like, before it realised I could 'see' it. Immediatly, it turned, and a feeling of quickly-growing terror overcame me. I could feel that it was furious that I could see it, and as it moved towards me, I woke up.
I feel this entity does not want to be perceived, or that it does, but not for long, and only to instil terror. It doesn't strike me as malevolent, having never returned, and it does not wish to be contacted, either.
I believe it is only around until it is perceived, gains its' energy from terror, and then leaves and moves to the next person.