Fan Casting Kate Kane in Justice League: Knightfall

After Batman announces the beginning of an oncoming war between two halves of the Justice League and Teen Titans, Kate Kane, Bruce's cousin, chooses to take his side in the conflict, feeling that the death of Damian Wayne has left another scar on the Wayne family that was not needed. At the end of the film, once Batman's regime has begun, he appoints Batwoman the marshall commander of his seven armies, giving her a seat on his regime council too.