Batwoman used an old Batman trick to protect her secret identity. 1 / 8
Kate Kane had Alfred Pennyworth's daughter Julia pose as Batwoman. 2 / 8
This fooled Kate's ex, Sophie Moore, who figured out her secret and tried to tell Kate's father. 3 / 8
The 1960s Batman show used the same trick twice. 4 / 8
Alfred posed as Batman to fool Commissioner Gordon and the Joker. 5 / 8
The Arrowverse has also used the trick. Martian Manhunter has posed as Supergirl. 6 / 8
John Diggle and Roy Harper have also doubled for Green Arrow to save Oliver Queen. 7 / 8
Kate having Alfred's daughter wear a Batsuit is fitting. 8 / 8