Doctor Joan Leland was a psychiatrist at Arkham Asylum.
Doctor Leland was a no nonsense professional, undaunted by the famous cases that lived in Arkham Asylum. She told that much to Dr. Quinzel when she came to work at the asylum. It was to no avail, as the young doctor would later become a patient herself. Dr. Leland eventually tried hard to get her back to sanity, though the holiday was a brief one.
Another success story was Arnold Wesker, whom she treated to near rehabilitation.