Dr. Hall is a professor at Gotham University.
Biography[]
At the students' graduation in 2021, Hall consoled Mary Hamilton when he realized she was sad that her mother wasn't there. Later, the new Mad Hatter probably used his hat to hypnotize Hall and make him undergo surgery in front of all university. Sophie Moore assisted Mary (who was also being controlled) with fixing the brain control on herself, by utilizing a defibrillator to cause heart failure in Dr. Hall, and afterward revived him.[1]