Real Name: Constance Arkham
Occupation: Doctor
Weight: 110 lbs
Height: 5ft 4in
Eyes: N/A
Hair: N/A
Base Of Operations: Gotham City
Group Affiliations: None
Relatives: Amadeus Arkham (husband, deceased), Harriet Arkham (daughter, deceased), Elizabeth Arkham (mother-in-law, deceased), Jeremiah Arkham (nephew)
First Appearance: Batman: Arkham Asylum
Created by: Grant Morrison

The wife of Amadeus Arkham, Constance and their daughter Harriet lived with him when he had his mother's residence near Gotham City being converted into an insane asylum. Half a year later, both Constance and Harriet Arkham were raped and murdered by the escaped serial killer and patient of Amadeus, "Mad Dog" Hawkins.