Age: >13,000

Almost nothing is known about the Doctor's background and past, other than that they had a doctorate in neurology and had extensively researched Oripathy prior to the events of the story. Like Kal'tsit, their file number starts with 'B', implying a connection to Babel, the predecessor of Rhodes Island.

Currently suffering from amnesia, the Doctor was rescued by Amiya from Chernobog when Talulah led the Reunion insurgence against the Ursus empire.

Doctor belongs to an extinct race called "First Civilization", a space-faring civilization who colonized Terra, bringing with them animals who later evolves into the Ancients and Elders.