Said to have been made by one of the Old Gods during the time of the War of the Gods, the Gloom Device is a large yellow box covered with dials, switches, buttons, and one big red button that sets it off.
It is known that the device is capable in some manner of destroying logrus manifestations, and perhaps even the Primal Logrus itself.
It recently appeared in the UNS universe after playing a crucial role in the destruction of another universe during a succession crisis in Chaos there. Swallowed by Demogorgon, it caused much havoc and nearly destroyed an entire army of Chaosians.
It is now in the hands of Anno, Keeper of the Logrus.