Some of the Calculator's brains making comments characteristic of their previous occupations prior to becoming part of the machine.

The Calculator is the main antagonist of Fallout Tactics. It is a supercomputer that was created as part of Vault-Tec's Enclave-manipulated social experiments and was made to act as the Overseer for Vault 0, where it had power over managing the vault's food supply and other resources for the cryogenically-frozen population.


The Calculator is not truly a robot but actually a cyborg and multi-being, as its CPU is collectively made up of the cryogenically frozen brains of eight of Vault 0's most talented original residents: A scientist, a politician, a doctor, an artist, a lawyer, an Evangelist, a video game designer and a porn star.

Not too long after its installation, the Calculator went insane and ordered the robots it controlled to kill the people of the vault. Those who were not killed by the robots suffered severe brain damage due to the Calculator coming to neglect its duties in sustaining the life-support systems. Many years later after this incident, a group of Super Mutants stumbled into Vault 0, which activated the Calculator's security protocols which, for its current corrupted state, prompted the machine to declare total war on all organic life and it began building robot factories to add to its robotic forces for an invasion of the wastes to the East.

Eventually, the Midwestern portion of the Brotherhood of Steel was at war against the Calculator's machines, and their general Simon Barnaky was captured by the Calculator and transformed into its personal right-hand robobrain. At the climax of the game, a BOS squad led by the "Warrior" (the player character) enters Vault 0, makes it past all the defenses including Barnaky, and destroys the Calculator's brains. The brains were the part of the Calculator that had gone mad, not the machinery itself, so the player gets to make the final decision of what to do with the Calculator. They may let the machine shut down or destroy it outright, or give it a new mind with either the Warrior's brain, or Simon Barnaky's, if he had not been killed in the previous fight. If the Warrior becomes the new Calculator, it outlaws discrimination against mutants but may or may not be a corrupt ruler depending on the Warrior's established level of morality, while if Barnaky's brain is installed it becomes outright violent and genocidal towards mutants, driving them all the way to the West coast where it is implied they will be wiped out by the similarly xenophobic Western Brotherhood of Steel.


           Fallout Logo Villains

China | Great War | Vault-Tec

Recurring Groups and Creatures
Super Mutants | Enclave | Raiders | Children of Atom | Khans

Fallout 1
The Master | Lieutenant | Morpheus | Gizmo

Fallout 2
Frank Horrigan | Dick Richardson | Myron

Fallout 3
Allen Mack | John Henry Eden | Colonel Autumn | Mr. Burke | Stanislaus Braun | Roy Phillips | Allistair Tenpenny | Eulogy Jones | Slavers | Talon Company | General Jingwei | Professor Calvert | Wernher | Ishmael Ashur | Aliens | Lone Wanderer | Weston Lesko

Fallout: New Vegas
Caesar's Legion (Caesar, Legate Lanius, Vulpes Inculta) | Powder Gangers (Joe Cobb) | Benny | Mr. House | White Glove Society | Omertas | General Lee Oliver | Fiends | Tabitha | Father Elijah | Dean Domino | White Legs | Think-Tanks | Barton Thorn | Ghost People | Ulysses

Fallout 4
Conrad Kellogg | Shaun | Mayor McDonough | Arthur Maxson | The Institute | Gunners | The Forged | Eddie Winter | Marowski | Bobbi No-Nose | Lorenzo Cabot | Sinjin | Dr. Chambers | Triggermen | Nisha | Mason | Mags Black | The Mechanist | Ivey | Rust Devils | High Confessor Tektus | DiMA

Fallout 76
Scorchbeasts | Scorched Wildlife | David Thorpe | Rose | Freddie Lang | Morris Stevens | Scott Conroy | Camp Counselor Nia | The Nightstalker | Mad Dog Malone | MODUS | ZAX 1.3c | Strangler Hearts | Strangler Wildlife | New Appalachia Raiders | Blood Eagles | Free Radicals | Cult of the Mothman

Fallout Tactics
Calculator | Simon Barnaky

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