Zechs Marquis / Milliardo Peacecraft

19 Year-old Milliardo is the son of the Sanq Kingdom's king Peacecraft. Thirteen years ago, the Alliance deposed the king Peacecraft and, to avoid and future problems, had him assassinated. Milliardo swore to get revenge for his father's death and he disappeared. He soon reappeared under the guise of Zechs Marquis and joined Oz. Instead of trying to gather power from within a ruin country, he decided to join the Alliance. He soon became Treize Khushenada's best friend and pilot in the Special's division of Oz, thus getting close to high command in Oz. When Zechs fell indisgrace due to misconduct for reconstructing the XXXG-01W Gundam and dueling Heero, he hides for a while and comes back as Milliardo Peacecraft to fight for the Alliance and restore peace to the Sanq Kingdom.

His first name (Milliardo / Milliard) means "billion" in French.

Voice Actor: Takehito Koyasu