Fox’s Batman prequel has found another villain: Jada Pinkett Smith has been tapped to play “Gotham’s” Fish Mooney, a sadistic gangster with street smarts and a short temper.

Based on the DC Comics characters and penned by “The Mentalist’s” Bruno Heller, the one-hour drama series from Warner Bros. TV focuses on a younger version of Batman ally James Gordon (Ben McKenzie). Other cast members include Donal Logue as Detective Harvey Bullock, Zabryna Guevara as Captain Essen, Erin Richards as Barbara Kean, Sean Pertwee as Alfred Pennyworth and Robin Lord Taylor as Oswald Cobblepot (better known as the Penguin). Heller is exec producing with director Danny Cannon (“CSI”).

Pinkett Smith, who has had starred on “HawthoRNe” and “Collateral” and exec produced “The Queen Latifah Show,” is repped by Paradigm, Overbrook Entertainment and Tencer & Associates PR.

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