Doctor 8

Doctor 8 is a pre-War scientist operating the Big Empty in 2281.

Background
He has lost the ability to talk due to damage sustained to his voice module during an encounter with another visitor to the Think Tank, evidences pointing towards Father Elijah, and transmits RobCo sound waves instead. However, after passing a high Science check or a Perception check, the player seems to understand his language without altering the subtitled text.

Quests

 * On The Same Wavelength: Though there is as language barrier between the player and Dr. 8, you can still communicate with him Perception of 7 or a Science skill of 75.

Appearances
Doctor 8 appears in the Fallout: New Vegas add-on, Old World Blues.

Behind the scenes

 * His collection of clocks (seen in his home and his room in the Think Tank) may be a reference to Doc Brown from Back to the Future, who's home contained 60 clocks in addition to a large audio amplifier.