Doctor 0

Doctor 0 is a pre-War scientist operating in the Big Empty in 2281.

Background
Doctor 0 is a Pre-War doctor that became a think tank to continue his work at Big MT. Doctor 0's scientific specialty is in deconstructing robots. He also has an large hatred for Mr. House and built Muggy with the intent of mocking House's Securitrons.

Upon dialogue with Dr. 0, the player discovers his name is Dr. Ø (Zero) and everybody has been reading his name wrong. When Klein comments on the Courier's 'penis' toes Doctor O responds with "I don't remember the human penis being that big."

Quests

 * What's In A Name?: The player must have 9 Intelligence or the Math Wrath perk in order to help him with his name problem. The player character will suggest adding a slash through the zero to differentiate between a zero and O.

Other interactions

 * If the player has accessed the correct dialogue options during the initial dialogue, he will occasionally give the player 50 caps upon request.

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

Behind The Scenes

 * James Urbaniak also plays the voice of Dr. Thaddeus S. "Rusty" Venture of the animated show The Venture Bros. Doctor 0's name may be a reference to Dr. Byron Orpheous, a character from the show who is frequently referred to as Dr. O for short.
 * A second reference to the Venture Bros. may come from Doctor O (Zero's) name and the fact that Rusty Venture, try as he might, is never successful in being a super scientist, just like Doctor O.
 * If you have the Wild Wasteland trait active, one of his broadcast messages across the crater asks the lobotomites to please remember to clean the walking eye. This is another reference to the Venture Bros. With Wild Wasteland, these walking eyes also appear in the Magnetohydraulics Complex, although the player cannot interact with them.