Maintenance robot (Fallout: Brotherhood of Steel)

The maintenance robot is a model of robot Vault-Tec implemented in the company's Secret Vault. They are little, have no arms, slow, box-like moving things that do some sort of maintenance work for the Vault and was also power generators with legs.

Appearances
Maintenance robots appear in Fallout: Brotherhood of Steel

Behind the scenes
The maintenance robot is a reference to the GNK power droid from Star Wars, since it resembles in the Star Wars model and is used to make the same functions.