Late last year, Warner Bros. announced it had acquired the film rights for "Hard Boiled," Frank Miller and Geof Darrow's acclaimed graphic novel about a Terminator-like robot inside an organic humanoid shell who goes on an ultraviolent rampage after learning about his true identity.

Although his name had previously been speculatively linked to the project, it now appears that British director Ben Wheatley is definitely on board.

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Speaking in a recent radio interview on the Kermode & Mayo Film Review program on BBC Radio 5 Live, Wheatley confirmed his involvement, saying, "I am working on 'Hard Boiled,' which is not the John Woo film, but the Frank Miller, Geof Darrow Comic Book, so that would be, I would have thought, R[-rated.]"

The director certainly has a history of creating unsettling R-rated cinema fare, which often include moments of incredible violence. His previous films, "Down Terrace" and "High Rise," were both awarded R-ratings, as was his latest offering, "Free Fire," a dark action comedy about an arms deal that quickly descends into an all-out gun fight in a warehouse.

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Starring Enzo Cilenti, Sam Riley, Michael Smiley, Brie Larson, Cillian Murphy and Armie Hammer, "Free Fire" hits cinemas across the US on 21 April.

“Hard Boiled” is currently in development and has not yet been given a release date.