Creator
Bill Finger, Bob Kane, Jerry Robinson
Jack Kirby
Universe
New earth
New earth
Publisher
DC comics
DC comics
In Comics
Batman #1 (Spring 1940)
The Demon #1 - The Origin of the Demon
Citizenship
American
Unknown
Marital Status
Widowed
Single
Base
Arkham Asylum, Gotham City; Ha-Hacienda
Hell
Relatives
Jeannie (wife, deceased); Unborn son (deceased); Melvin Reipan (cousin, deceased)
Not Available