Batman: Arkham Knight is supported by his allies, Robin (Matthew Mercer), Nightwing (Scott Porter), Catwoman (Grey DeLisle), Barbara Gordon (Ashley Greene)—who assists Batman covertly as the hacker Oracle—and her father police commissioner James Gordon (Jonathan Banks). Batman's loyal butler Alfred Pennyworth and Wayne Enterprises colleague Lucius Fox (Dave Fennoy) provide Batman with tactical support, and the holy warrior Azrael (Khary Payton) aims to replace Batman as Gotham's protector. Throughout the city, Batman is faced with several supervillains: he must overcome Scarecrow's (John Noble) plot to threaten Gotham City, dismantle the Penguin's (Nolan North) weapon dealing operation, put an end to Two-Face's (Troy Baker)
Batman: The Animated Series as the Mad Hatter, David Warner as Ra's al Ghul, Michael York as Count Vertigo, Kate Mulgrew as Red Claw, George Murdock as and George Dzundza as the Ventriloquist. One of the series' best-known inventions is the Joker's assistant, Harley Quinn, who became so popular that DC Comics later added her to mainstream Batman comic book continuity. The Penguin underwent change for the series; his appearance was remodeled after the version seen in "Batman Returns", which was in production simultaneously with the series' first season. New life was also given to lesser-known characters for the series such as the Clock