The Chamber of Invisibility was one of the projects built by the Brobots. It was a wooden chamber with an invisibility ray positioned to fire at anyone within the Chamber. A video camera also provided live footage of the Chamber's inside, managing to capture footage from a totally different angle than that of the camera itself. Though the door could be opened to demonstrate that the subject really was invisible, apparently the invisibility ceased shortly after the door was opened. It is unknown whether someone could remain invisible outside the Chamber of Invisibility. The Chamber of Invisibility disappeared before Linda Flynn-Fletcher could see it, but it is unknown whether it was stolen by Santa Claus or destroyed when the Brobots rampaged.