Malfunctioning robot resembling an insect found clinging to the walls outside the large structure in Ruins Area 3. The Proboscum has a large eye and powerful legs as well as a long mechanical "proboscus." The Proboscum was probably designed as a work robot for manufacturing and repair, but the exact nature of its work is difficult to ascertain. It is suspected the Proboscum served as part of a larger factory for the construction of robots and other materials, the remains of which have since collapsed. Although the Proboscum can be used as a platform for ascending and descending the walls of the ruins, its electronics have failed over the years, causing it to behave erratically, randomly lowering its proboscus, even when it could easily hold the weight of a person in powered armor.