Mobile Suit Gundam Wing or simpliy referred as Gundam Wing takes place in the distant future, Mankind has colonized space (with clusters of space colonies at each of the five Earth-Moon Lagrange points), and down on Earth the nations have been unified as the United Earth Sphere Alliance. However, the Alliance oppresses the space colonies with its military power, backed by the secret society known as the Organization of the Zodiac (more commonly referred to as OZ). The colonies desire a peaceful resolution to the situation, joining together in a movement headed by the pacifist Heero Yuy. In the year After Colony 175, Yuy is shot dead by an OZ assassin, silencing the colonies' efforts for peace with Earth. The assassination also prompts five disaffected OZ engineers to turn rogue after the completion of the prototype mobile suit Tallgeese.
Gundam Wing premiered in the United States on Cartoon Network's Toonami programming block from March 6, 2000 to May 11, 2000, with reruns continuing until Cartoon Network lost the broadcast rights in 2002. It would later air on Adult Swim during April Fools' Day 2012's Toonami prank.