The Hattori Hanzo sword is a fictional weapon that gained popularity through its depiction in various works of popular culture, particularly in the movie "Kill Bill: Volume 1" directed by Quentin Tarantino. In the movie, the character Beatrix Kiddo, played by Uma Thurman, receives a Hattori Hanzo sword from the character Hattori Hanzo, portrayed by Sonny Chiba.

In the context of the "Kill Bill" series, the Hattori Hanzo sword holds significance as a legendary and highly coveted weapon, crafted by the fictional master swordsmith Hattori Hanzo, who was inspired by Beatrix Kiddo's quest for revenge.

It's important to note that in real history, Hattori Hanzo was a historical figure and one of the most famous ninja leaders in Japan during the Sengoku period. However, the association of Hattori Hanzo with the Hattori Hanzo sword depicted in "Kill Bill" is entirely fictional and created for the purpose of the movie's storyline.