Hollywood actors Charlize Theron and Uma Thurman turned out on Wednesday (June 25) for the premiere of the superhero sequel The Old Guard 2.

They're both bringing their fighting skills to the table, with Theron bringing her fighting skills from the likes of Mad Max: Fury Road, while Thurman is synonymous with swords from Quentin Tarantino's Kill Bill franchise.

In The Old Guard 2, they play rival immortals who are on a collision course throughout the film.

Theron said of Thurman, "She came in towards the end but she has so much confidence and muscle memory of working with a sword as long as she did on 'Kill Bill' that it was really, she was impressive, very impressive."

While Thurman said of Theron, "She's a pro and she's amazing. I admire her very much and working together is a thrill. You don't often get to work with another woman that you admire that much, who's such a kind of megawatt superstar and kind of an incredible force in cinema."

Theron stunned at the premiere in a crop top, dinner jacket and shorts. When asked if action films helped her stay in shape, she told Reuters, "Yeah, it's a very painful and expensive way to stay in shape but it's definitely... I mean, I think I love it because of the narration around it but I do think there's a part of it that's kind of like a freebie, like you get to learn something like a martial art or climbing a mountain or something like that that I do really love."

The premise of the franchise is that a group of immortal men and women form a group, led by Theron's Andy/Andromache, to try to help mortal humanity.

In the first film, the group enlists a new immortal Nile, played by KiKi Layne, who has dreams about other immortals, including one of the members they lost, Quynh (Veronica Ngo), who was imprisoned in an iron maiden under the ocean for 500 years.

In the sequel, Quynh resurfaces after being rescued by the mysterious Discord, played by Thurman, but as friend or embittered foe to The Old Guard?

The second film ends abruptly, so will the franchise get a third film?

Layne said it relied on viewing figures on Netflix, when it starts streaming there from July 2.

She said, "Push, push, push for everybody and their mother and their uncle and their father and cousins. Everybody watch it because then maybe, just maybe, I don't know, we'll see."