Throughout the game, he chases Jennifer Simpson through the Barrows mansion in an attempt to kill her. He seems to take some childish delight in playing with his victims before he kills them, as he can be seen dancing for a short while if he knocks Jennifer to the floor. It is heavily implied that he is a demon, as it is discovered that his mother Mary was a Cultist, and in the opening cutscene the baby Bobby's eyes are completely white.

Bobby meets his fate as Jennifer activates the clock tower bells, and the chimes disorient him enough so that he falls off the clock tower to his presumed death.