A ninja is a historical figure from Japan, known for their skills in espionage, stealth, and combat. Originating during the feudal period, ninjas were often employed as spies or assassins, using their training to gather intelligence or carry out covert missions. They were skilled in various martial arts and tactics, which allowed them to move silently and evade detection. Ninjas are often depicted in popular culture, including movies, video games, and comic books, where they are portrayed as mysterious and highly skilled warriors. This portrayal has contributed to the modern fascination with ninjas, blending historical facts with fictional elements to create an enduring image of these enigmatic figures.