John Boyega's 'Star Wars' character Finn is ''much more seriousness and understanding'' in 'The Last Jedi'.

The 25-year-old actor is reprising his role in the latest instalment of the science fiction franchise after making his debut in 'The Force Awakens' and has revealed how Finn has developed as a character.

He said: ''He's more serious in this one. He's much more on the ball with the fight. His decision to fight for the Resistance is not an easy one to make, and we still see him in a transition, but we can tell he's trying ...

''He's still the jokey, light guy, but he has moments of much more seriousness and understanding, because he's now starting to get to know what it means to be a human being.''

And John feels 'The Last Jedi' is different from all its predecessors and praised the filmmakers for taking on ''darker and deeper'' challenges.

He added: ''It's different because the story's different. We're continuing the story. We can't go back and do it again. We're moving forward, and the challenges are darker and they're deeper, and the Resistance, they're not great right now. They're on their last leg and General Leia is the only one protecting the line of defense. There's a call and a cry for help throughout the whole galaxy.''

John is also thrilled with how the 'Star Wars' universe has been ''expanded just in terms of culture''.

He told the New York Daily News: ''It's been great to see how the 'Star Wars' universe has been expanded just in terms of culture. The human aspect of it. 'Star Wars' is known for having a great variety and diversity in aliens, and now we get to kind of transfer that same code into the humans in the story, and it only makes sense.''