John Koyama is an actor and a stunt performer.
Ben 10: Race Against Time
Rebel Moon - Part One: A Child of Fire
Rebel Moon - Part Two: The Scargiver
Blade
The Time Machine
Batman v Superman: Dawn of Justice
Hanna
Tropic Thunder
The Last Samurai
Godzilla
Freedom Writers
Six Days Seven Nights
Rising Sun
Mortal Kombat
Beverly Hills Ninja
Escape from L.A.
Spawn
Bowfinger
The Replacement Killers
Jade
