I've seen photos of a physical person (male) sucking energy from other people.
A group of my friends had been doing readings and healings at a mystic fair in a town up north. They were telling me about a young man Lyn had met and how the others felt exhausted/drained everytime he was around them. They didn't like him and told her how they felt. Lyn was fine and thought they were just a bit jealous. On the third night she had a disagreement with him about something casual. Next thing she knew her legs went from under her and she was on the ground. He walked away and didn't try to help her up.
While my friends were telling me about it, Lyn arrived with photos she'd taken of the trip. She sat down on the couch next to me and started going through them. There were four photos taken from different angles of them all standing in group around a barbeque. In every one, the young man had a black funnel of sooty looking fog coming out of the top of his head with long fingers reaching towards or into the tops of the other peoples heads.
The first photo she handed me was taken from a deck outside the lounge of their motel suite, looking back into the room. The other three were meditating on the floor and couch. Coiled along the floor and over the arm of a chair was fine white 'slinky' (those kids toys, like springs that boing down the stairs). In between the coils were clear detailed faces of their guides in like minature cameos.
I'd never seen spirit or energy captured on ordinary film like that before. I had in my hands proof of what we could psychically see. I found it incredibly exciting.
Then Lyn grabbed the photos off me and ran into the kitchen. Next thing I saw flames leaping out of the sink. She'd set fire to the whole film and the negatives. The sight of photos had scared her and she didn't want them.
Seeing the photos was a shock for me too that someone can actually suck energy like that from other people. I guess he'd be a psychic vampire.