DCU Animated Original Movies started in 2007 with dark and adult-skewing content. Universe consists of 16-part arc from 2013 to 2020. Universe includes standalone films like Batman: Soul of the Dragon
Batman ranks 93rd, Superman 65rd, and Wonder Woman 71st. Batman's Nightwing form matches his combat skills. Aquaman's trident can cut through Superman's skin. Deathstroke ranks 92nd, possibly more skilled than Batman
Bruce Wayne was born to wealthy Wayne and Kane families in Gotham. His parents were murdered by Joe Chill at age ten. Bruce spent seven years training under various martial artists and magicians. He trained with Ra's al Ghul in Abu Dhabi, becoming Demon's Heart
The Joker was created by Bill Finger, Bob Kane, and Jerry Robinson in 1940. Initially portrayed as a serial killer with a permanent grin. Initially intended to be killed, but saved by editorial intervention
Harleen Quinzel grew up in dysfunctional family with alcoholic mother and criminal father. Became psychiatrist at Arkham Asylum, initially working with Joker. Developed complex relationship with Joker, who manipulated her into becoming his sidekick
Batman first appeared in 1943 with Lewis Wilson and Douglas Croft. 1949 film featured Robert Lowery as Batman and Johnny Duncan as Robin. 1966 film introduced Batman, Joker, Riddler, and Penguin