Superman playing Batman

Girl Wonder: Jena Malone, pictured last week, is reportedly going to play a female Robin in Batman v Superman: Dawn Of Justice

While the Batman set in Michigan is on lockdown - with everyone from crew members to extras sworn to secrecy - the television station reports a source let the big casting news slip.

Reporter Kirk Montgomery revealed: 'The character of Robin as scripted now is female actress Jenna Malone was spotted on set in Detroit.'

Rumours had started to swirl that the 29-year-old actress had been cast in the film - which stars Ben Affleck as Batman - after she dyed her hair a bright cartoon-esque red.

Giving a hint: Rumours had started to swirl that the 29-year-old actress had been cast in the film - which stars Ben Affleck as Batman - after she dyed her hair a bright cartoon-esque red at the start of October

Plucked from comic: While most people know Batman's right hand man, as well, a man, serious fans of the comic books have met a female Robin, whose real name is Carrie Kelley, before

Posting a picture on Instagram on October 3, the star did not spill the beans on the reason behind her new shade.

Instead she captioned the picture: 'Drastic times call for drastic measures.'

While most people know Batman's right hand man, as well, a man, serious fans of the comic books have met a female Robin, whose real name is Carrie Kelley, before.

The character made her debut in Frank Miller’s The Dark Knight Returns, which the film's director and writer Zack Snyder was heavily influenced by.

Helping hand: Jena will help Ben (pictured) take on both the bad guys and the good guys, namely Superman

Batman has had female onscreen help before from Batgirl, who was played by Yvonne Craig in the 1960s television series and Alicia Silverstone in the 1997 Batman & Robin film.

In addition to Ben and Jena, the new film also stars Jesse Eisenberg as Lex Luthor, Henry Cavill as Superman and Gal Gadot as Wonder Woman.

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