'Captain America 3' directors Joe and Anthony Russo want to keep to the movie's "explicitly political" themes and don't want the character to become a "disillusioned antihero".
Directors Joe and Anthony Russo are currently developing ideas for the next movie in the superhero series - which stars Chris Evans in the title role and as his alter ego Steve Rogers - and they are keen for their character not to become a "disillusioned antihero".
Anthony told Yahoo!: "The character was invented for an explicitly political purpose. So it's hard to get away from that nature.
"It's also important that Captain America doesn't become another disillusioned antihero."
Joe added: "His morality is part of his superpower."
The pair were keen not to give too many details away, but did promise the story will "bringing some new elements to the table that will give a twist on [second movie] 'Winter Soldier'."
They also suggested they will explore the troubled relationship between Captain America and his childhood friend-turned-assassin Bucky Barnes (Sebastian Stan).
And the directors advised fans to watch out for several members of their own family making cameo appearances, as is often the case in their work.
Joe laughed: "If you look at the credits of 'Winter Soldier', there's probably 47 Russos in the film."
The movie will pick up some time after the events of 'Captain America: The Winter Soldier'.
It is currently scheduled for release on May 6, 2016.
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