Established sometime after the Great Titan War, the Titan Society focuses on analyzing the nature of the Subjects of Ymir and their connections with the Titans and Titan powers. Information gathered from the Titan Society is shared with members of the Marleyan military, though it appears that members of the Eldian population within Marley are not informed. It is unknown whether the common Marleyan population is given the information obtained by the Society.
Sometime before the year 832, the Titan Society proposed a theory that centers around the Founding Titan: All Titans and Subjects of Ymir are connected to each other through invisible "paths" that transcend physical space, and these "paths" converge at a single coordinate; this so-called "Coordinate" is the Founding Titan.
In later years, the Titan Society also researched the strange case of Zeke Jaeger, who could inexplicably control Titans created with his spinal fluid; however, no conclusive results were made concerning this phenomenon. The Titan Society is unaware that Zeke possesses royal blood, granting his Beast Titan powers similar to those of the Founding Titan itself.