Bullet Train is a bombastic and ballistic film that thrives on the strength of director David Leitch's action chops and the fun energy the cast imbues their characters with. Arguably the most successful in this regard are Aaron Taylor-Johnson and Brian Tyree Henry, who play "the twins" Tangerine and Lemon, respectively. Cast a constantly bickering but tightly bonded duo attempting to bring a package and a hostage to the mysterious crime lord known as the White Death (Michael Shannon), their straightforward job is complicated by the perpetually unlucky Ladybug (Brad Pitt), whose attempts to take their property spirals into a bizarre and death-defying series of brawls and scrapes.

Both actors are given the chance to flex a lot of creative muscles in the film, and their sequences are among the film's best in terms of both raw action-comedy and genuine emotional arcs. Ahead of Bullet Train's premiere on Aug. 5 in theaters, CBR sat down to speak with Aaron Taylor-Johnson and Brian Tyree Henry about the importance in highlighting their partnership in the film. The pair dove into what made the David Leitch-directed action film a uniquely fun experience and what it was like developing a "codependent" friendship that translated to strong on-screen rapport.

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Lemon and Tangerine aboard the Bullet Train

CBR: Lemon and Tangerine are such a fun duo, and they have such a solid rapport throughout the film. What was it like diving into that relationship?

Aaron Taylor-Johnson: Oh, man, it was great. I mean, Brian and I literally hit it off. You know, firstly, I'm a huge admirer of his work, and it was great to have an actor who I could just bounce off of. Secondly, we just clicked, and it was amazing. We had great chemistry, and he's like a real brother to me. I love him to bits, and we care for one another.

That's just kind of how we elevated the characters. We put a lot of time and trust and love into it, and then we just sort of went to town -- we improvised and took it to a whole other place, and we had a lot of fun. David Leitch gave us that room to do that.

Brian Tyree Henry: What I think is the true testimony of how great this partnership worked out is that Aaron and I are incredibly codependent on one another. It became a friendship that just manifested over a course of the five, six months that it took for us to make this movie.

We just really wanted to develop Lemon and Tangerine to be characters that people really cared about, to make people really feel like there was this bloodline between the two of us so that if anything happened, either we got separated, or we weren't together in the film, people would feel that and would feel our need to be back with one another. It's a partnership that is truly based out of love and trust, and Aaron and I really wanted to make sure we kept that as authentic as possible.

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You've both been in big spectacle films in the past, but the action in Bullet Train is so personal and tightly constructed. What made working on this film unique from your past experiences?

Taylor-Johnson: Yeah, I mean, I think that was everything. This is a David Leitch movie, -- that's what you're signing up for. I think every one of us was excited to get our own stunt sequence and our moment. Everyone's got a brilliant fight piece in this movie. What's really interesting is that each character is very unique and different to one another.

I think you get that with David Leitch. It's a confined space. We're all on the train. I think it just adds those layers and elements. I mean, Brian's got his great fight sequence with Brad [Pitt]. It's in a tight space, and it's in the quiet car, and then they're trying to kill each other but not making noise. It's just adding those elements. I think, as an actor, you just get to play within that. That's just what elevates that material -- it was just hilarious and funny.

Henry: Yeah, it makes the characters more than the character -- it makes the fights more robust if the fights are bred out of who the characters are. If you've got someone like the Prince, who appears to be demure and dainty, but she's incredibly stealthy with the way she attacks, or you have a father who's lost his son and is dealing with alcoholism -- everything he's doing is kind of all over the place... You've got the twins, who were just hired assassins and kill whatever the hell they want. So we've got these different kinds of styles that David Leitch hones in on to make each fight very unique and individual.