Poltergeist

The Poltergeist is a Hardmode, post-Plantera enemy that spawns during the Pumpkin Moon event. It behaves similarly to the Wraith.

Defeating a Poltergeist adds 10 /  8 points during the Pumpkin Moon.

Trivia

 * A is a type of ghost or spirit that is responsible for physical disturbances, such as loud noises and objects being moved or destroyed. Most claims about or fictional descriptions of poltergeists show them as capable of pinching, biting, hitting, and tripping people. They are also depicted as capable of the movement or levitation of objects such as furniture and cutlery, or noises such as knocking on doors.
 * Poltergeists in Terraria appear to wield a blue Book, a wooden Table, and a wooden Chair. They cannot actually drop or throw them, however, or move any objects.