Guile (ガイル Gairu?) is a video game character in Capcom's Street Fighter series of fighting games. In the live action Street Fighter movie, Guile is given the full name of William F. Guile with the military rank of colonel, which was also used in the US Street Fighter cartoon, but was never adapted into the video game series. In the Udon Street Fighter comic book, Guile is the character's first name. Guile made his first appearance in Street Fighter II (1991) as one of the eight selectable characters featured in the original version of the game. A Major in the United States Air Force, he leaves his country and family to enter the World Warrior tournament and avenge his friend Charlie's death, who was killed by Bison, the tournament's sponsor sometime before the events of the game.
In his ending, he defeats Bison, but is dissuaded from killing him by his wife Jane (Julia in the Japanese version) and their daughter Amy (Kris in Japan). Guile spares Bison and returns home to his family. Guile is very often seen as the most logical character to have actually won the second World Warrior tournament due to its fit in official Street Fighter canon.