This is The Foreboding Figure from the Museum Of Peculiars.

A glass mannequin, with joints fixed together by rusted screws. Displayed on a glass stand not unlike its common wooden counterparts. Said to be once kept by a paranoid man as a warning device, alerting the user when someone is in the room with them. The figure appears transparent in its natural state, but the mannequin fades internally to a red hue when it is observed by more than one person in the room. Whether it’s a photo, or in person, if it is appearing red, ask the people around you to leave the room for a moment and observe it in its natural state.

Purchase includes Dropbox link to a full resolution photo and a bonus 500x500 transparent alt render of the piece.

The Museum Of Peculiars collects and displays the finest haunted pieces for the world to see. Created by Sakunera as a way to merge 3D art and writing, the fictional museum is sharing peculiar and strange items from their private collection for the world to take part in owning themselves.