Cerberus

Cerberus is the Mr. Gutsy model robot patrolling the ghoul city of Underworld. If the player speaks to him he or she will learn that he is not fond of his role in protecting the ghoul's and that a combat inhibitor prevents him from killing everyone in sight. A player with the Robotics Expert perk can remove Cerberus's combat inhibitor, but Cerberus will become hostile to the player too.