The Dark Knightās goal is to not only seek vengeance for his parentsā death but to strike fear into the hearts of all criminals. In many Batman stories such as Dennis O'Neilās āThe Man Who Fallsā, Bruce Wayne exhibits chiroptophobia (fear of bats) and conquers that fear by placing the same terror into wrong doers. Batman uses this fear into one of his gadgets thatās more rare than many realize: the Sonic Bat Call. Created by Frank Miller and David Mazzucchelli, this Batman devise debuted in the 4 issue arc āBatman: Year Oneā in Part Three, originally published in Batman (Vol 1) 406 in 1987. In order to create a chaotic diversion and escape the attacks from the Gothamās SWAT team, on the heel of his boot Batman presses the ultrasonic signal button which calls live bats from his Batcave to fly to his exact location (panels 1-3). The young Caped Crusader uses this opportunity to ride away from the GCPD and onlookers such as Selina Kyle (panel 4). Millerās āYear Oneā was a clear and heavy influence for Christopher Nolanās 2005 film āBatman Beginsā. Just as in Mazzucchelliās intense panels, in the film this bat calling device is located in the Caped Crusaderās boot heel, as a form of protection and cover for Batman during a getaway (panel 5). In the animated film adaptation of Batman: Year One, this comic plot is brought to life as well. Although not rarely used within the Batman mythos, the Sonic Bat-Call reinforces the shadowy image of the bat and the Batman himself. We will discuss more of Batmanās arsenal in our session tomorrow so stay tuned and thanks for following History of the Batman! āš¼šš¦šš¬