Kate Mara says her new movie 'Fantatsic Four' is ''grounded in reality''.

The 32-year-old actress has joined the cast of the latest addition to the Marvel franchise, replacing Jessica Alba as Sue Storm - aka The Invisible Woman - and believes the superheroes are pioneers of good family values and are actually down to earth compared to their counterparts.

She said: ''It is quite raw and I think it is more grounded in reality than people are used to seeing. Usually superheroes operate alone, but the 'Fantastic Four' is about family who are at their greatest when working as a team. I so enjoyed interacting with the others, rather than carrying it on my own. I just love the three guys (co-stars Jamie Bell, Miles Teller ad Michael B Jordan who play The Thing, Mr Fantastic and The Human Torch).

''Though sometimes at the end of a 13-hour day of filming, they'd want to go out, and I'd be like, ''I love you guys, but I just don't want to be with you anymore!''

But the star - whose younger sister is Rooney Mara from 'The Girl with The Dragon Tattoo' - is excited for the film's reception and has signed up for more appearances.

She told Daily Mail's You magazine: ''When it's time to film the next one, I will definitely be ready to play Sue again. I wouldn't have signed on if I hadn't been up for it.''