Doctor 0

Dr. O is a character operating in the Big Empty in 2281. Upon dialogue with Dr. O you find out his name is Dr. 0 and everybody has been reading his name wrong.

Appearances
Dr. O appears in Fallout: New Vegas add-on Old World Blues.

Behind The Scenes
The voice actor for Dr. O, James Urbaniak, provides the voice for main character Dr. Thaddeus Venture on The Venture Bros. as well as the Doctor's brother Jonas Venture Junior and the super-villain The Phantom Limb.