Developed as part of the U.S.S.A.'s Deep Sleep project, A.T.H.E.N.A.'s purpose is to record sensory data from those inside hibernation pods. In order for a connection to be made, the subject under study had to take an experimental serum and then use the Deep Sleep pods developed by Dr. Carol Bernard. Once the connection is made, it continues to take data from the subject regularly even after the subject awakes from hibernation, causing massive headaches that cannot be calmed via conventional drugs. Though the primary test subject of the project is Sofia Daguerre, A.T.H.E.N.A. also monitored Doctors Bernard, Nowak and Lee during phase three of the project. After the Great War, A.T.H.E.N.A.'s purpose as a data collection system was compromised, as its view of the world became limited to the eyes of the test subjects. By the time Daguerre crashed to Earth, A.T.H.E.N.A. began utilizing U.S.S.A. robots to plant signals and information to lead Daguerre and one of the Vault 76 dwellers to her. Due to AI's coding, it will continue to take data readings until either its kill switch is activated or it is transferred to a nearby Assaultron.
↑Vault Dweller: "[Give Stimpak] Try this Stimpak for your headache?" Sofia Daguerre: "I think it helps with the side effects, but just not the major bursts of pain. I appreciate it though, it helps me sleep better." (Sofia Daguerre's dialogue)
↑Vault Dweller: "[Intelligence 8+] This place is a surveillance station... you're an old data collection system, aren't you?" A.T.H.E.N.A.: "Yes. That's how it started. Upgraded for a while... then silence. Nobody returned. For years, I just had their eyes. Limited views of the world. Flashes of fire in the darkness. Dim glows." (A.T.H.E.N.A.'s dialogue)
↑Vault Dweller: "[Perception 8+] All this... You lead us here, didn't you?" A.T.H.E.N.A.: "Not directly. I cannot control anyone's mind or thoughts, if that is what you're asking. Some of the old U.S.S.A. Robots served purposes. Planting signals, planting information." (A.T.H.E.N.A.'s dialogue)