TJ was an optic-neuro AI created by the Patriots. It was named after the 3rd President of the United States, Thomas Jefferson, whose likeness appears on Mount Rushmore.


Early construction

In the early 1970s, Zero (with Donald Anderson's help) commissioned the construction of TJ as part of an advanced AI network that was designed to govern the world's economic, political, legal, social, and cultural information.

A similarly named AI, TJ-Chrysalis-6000, had previously been created in order to operate the Chrysalis unmanned weapon, in the early 1970s.

Guns of the Patriots Incident

See also: Liquid Sun, Solid Sun, Third Sun, Twin Suns, Old Sun, and Naked Sin/Naked Son

In 2014, TJ and the other Patriot AIs (TR, AL, and JD) were unable to recognize the reconstructed GW as a threat, which had been installed aboard Liquid Ocelot's Arsenal Gear-class warship. While infiltrating the warship's inner sanctum, Old Snake and Otacon had uploaded the FOXALIVE computer worm into GW, which then acted as a conduit into TJ and the Patriot AIs, thus shutting down their system of information control entirely.

Behind the scenes

In Metal Gear Solid 4: Guns of the Patriots, a map displayed during an in-game cutscene implies that TJ may have been located in or around Southwest Africa.


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