All of the Gundam pilots' names have a number theme: Heero Yuy ("Hee" being Japanese kanji for one); Duo Maxwell ("Duo" meaning two); Trowa Barton ("Trowa" based on the French word for three); Quatre Raberba Winner ("Quatre" is the French word for four); Wufei Chang ("Wu" is Chinese for five). Also, most of the other characters also have this number theme, ie. Milliard Peacecraft ("Milliard" is French for billion); Lady Une ("Une" is French for one); Treize Khushrenada ("Treize" is French for thirteen) and many more.