↑ The title 'Jack Napier' was used in Tim Burton's 1989 Batman movie and later on used within the DCAU as well. Dr. Bartholomew refers to him by this name in "Goals in Darkness", and the name can be found in a file about him in "Joker's Wild". Afterwards in http://erickkpijy.slypage.com/14288430/the-smart-trick-of-joker-that-no-one-is-discussing