Hiroyuki Sanada, the Japanese actor, martial artist and sword master, has sliced and diced his way through "Mortal Kombat,” "Westworld” and "Avengers: Endgame” and made it look easy.

In "Bullet Train,” the David Leitch-directed action thriller about five assassins with tangled missions stuck on a high-speed Tokyo train, it actually was.

"We put my ideas, David’s ideas, the choreographer’s ideas, the stunt guy’s ideas, and mixed them together on set,” says Sanada, with whom Leitch had worked as a stunt coordinator on "The Wolverine.” "We rehearsed two, three times and then shoot, shoot, shoot. Very smooth and fun. Especially since David already believed in my suggestions and skills.”