Oscar winner Holly Hunter has joined the all-star cast of the Man Of Steel sequel.

The Piano star joins 300: Rise of an Empire's Callan Mulvey and The Wolverine actor Tao Okamoto as cast newcomers.

It is not yet known who they'll play or how their characters will impact the superhero movie.

The trio will join Ben Affleck, Jeremy Irons, Gal Gadot and Jesse Eisenberg in the blockbuster, while Henry Cavill, Diane Lane, Amy Adams and Laurence Fishburne will be reprising their roles from the 2013 Superman movie.