Answer:

ninjas

Answer	Crossword Clue
NINJAS	Throwing star assassins
NINJAS	Star pitchers?
NINJAS	Stealthy warriors

NINJAS	Japanese mercenaries
NINJAS	Fictional teenage turtles
NINJAS	Martial arts experts
NINJAS	Shuriken throwers
NINJAS	Silent assassins
NINJAS	Stealthy fighters
NINJAS	Shogun's servants
NINJAS	Japanese assassins of old

NINJAS	Sneakers from long ago?
NINJAS	"The Last Samurai" extras
NINJAS	Masked fighters
NINJAS	Warriors with supposed powers of invisibility and shapeshifting
NINJAS	Mercenaries of yore
NINJAS	Men in black
NINJAS	Stealth fighters