Bill (Kill Bill)
Background
Bill is the leader of The Deadly Viper Assassination Squad. He is a former student of Hattori Hanzo. Bill used to be in a relationship with The Bride and is now in a relationship with Elle Driver. He knows how to play the bamboo flute.
During the events of Kill Bill: Volume 1 (2003) played by David Carradine
The Bride lays on the ground bloody as Bill walks up. He wipes up some of her blood and sweat with his handkerchief and as she tells him her unborn child is his, he shoots her in the side of the head. Later, Elle Driver walks into The Bride's room, who is comatose, and as she is about to inject her with the poison, Bill calls her and calls off The Bride's assassination. After The Bride regains consciousness and starts to track down and kill members of The Deadly Viper Assassination Squad, Bill visits Sofie Fatale in the hospital and she tells Bill, The Bride kept her alive to get information from her and to give her a warning to tell the others that she is coming for the rest of them. Budd tells Bill, The Bride deserves her revenge for what they did to her, while Elle insists she needs to die.