Aggregator
is a silicon head filled with a chemical substance and exposed to two systems: a heating- and a cooling system.
The gas inside the head is alternately cooled and heated. As the low boiling point leads to a change of the aggregate state the gas obtains different densities. Permanent changes of the states causes the head to move almost imperceptibly from one position to another during the course of 40 to 50 minutes.

Like the punches it also moves between ecstasy and phlegma.