Wayne. Kane family This is the family that Martha Wayne is from, making them relatives of Batman and Batwoman: Jacob Kane - The father of Kate Kane, brother of Martha Wayne, and uncle of Bruce Wayne and Bette Kane. Beth Kane - The twin sister of Kate Kane. After being presumed dead, she resurfaces years later as the villainous Alice. Catherine Hamilton - The second wife of Jacob Kane and stepmother of Kate Kane who is the heir to the Hamilton Rifle Company arms fortune. Catherine Hamilton-Kane appears in Batwoman, portrayed by Elizabeth Anweis. This version is one of Gotham's most powerful citizens who made her fortune as a defense contractor and the CEO of Hamilton Dynamics. Alice manipulated events that caused her to confess to her corrupt ways upon the Wonderland Gang's infiltration of an event and Catherine starts to collapse from the poison that was placed in her drink. As Mary was also poisoned, Catherine sacrifices her life to allow Mary to live by drinking the antidote containing the Desert Rose plant. Before passing away, Catherine states that she knew of Mary's clinic and is proud of her. At the time when the complications of both versions of Beth Kane being on Earth-Prime start to worsen, Alice hallucinates seeing Catherine's ghost. Season two revealed that some of Catherine's other experiments have included working to cure Aaron Helzinger and doing research on the Desert Rose which also earned Catherine the hatred of Safiyah Sohail and the dismay of Jacob. Catherine Hamilton-Kane appears in Gotham Knights, voiced by Liz Burnette. Gabrielle Kane - The wife of Jacob Kane and mother of Kate and Beth. She was killed by terrorists. Cameron Kane - The ancestor of Kate Kane who is an industrialist. Robert Kane - The ancestor of Kate Kane and the son of Cameron Kane. He died protecting his father from an attack by Nicholas Gate. Following Robert's death, Cameron named a bridge he developed after him called the Robert H. Kane Memorial Bridge. Roderick Kane - The father of Martha Wayne and Jacob Kane and the grandfather of Kate Kane and Bruce Wayne. After he had had a stroke, Roderick was confined to an iron lung and could not speak well. Supporting characters in other media Detective Ethan Bennett (appeared in The Batman, voiced by Steve Harris) - Bennett is a detective at the GCPD and is one of