a character in a tale by Charles Perrault, who killed several wives in turn for disobeying his order to avoid a locked room, which contained the bodies of his previous wives. Local tradition in Brittany identifies him with Gilles de Rais (c.1400–40), a perpetrator of atrocities, although he had only one wife (who left him)

a man who kills women or treats them in a cruel and controlling manner

you seem to imply I'm some sort of Bluebeard who keeps her incarcerated