Pitt says he and Leitch have talked for years aboutJackie Chan.

“He’s just the greatest and ourBuster Keaton,” the Oscar-winning actor says.

So the parameters became the opportunity."

Bullet Train

Aaron Taylor-Johnson and Brad Pitt play assassins fighting on a train in ‘Bullet Train.'.Sony

Pitt throws out another: “A sea urchin.”

“It just forces creativity on everyone’s behalf,” Leitch says.

“We had to be creative with the art department, too.

We created the Momomon car so we could kill someone with a plushie.”

Watch the full conversation with Leitch and the cast in EW’sAround the Tablevideo above.

Bullet Trainis now playing in theaters.