Full of pride and self-loathing, living the life of a soldier has brought great internal conflict to Zechs. Despite his reputation as a great mobile pilot, Zechs feels that he has betrayed himself and his father's ideals. As a result of his many battles, he believes that he is not worthy to his family name, as his life as a soldier contradicts his father's pacifistic ideals. This is shown when Treize referred to him as "Milliardo Peacecraft" his real name to which Zechs responded to with great shame. He is often seen struggling between chivalry and the professionalism of a modern soldier who carries out destruction and killing in a rational and efficient manner. This internal conflict was what drove his motives as he struggled to find the balance between his former identity as his father's son, and the uncompromised warrior that he felt he needed to become. This led him into getting kicked out of OZ and eventually being in charge of the White Fang. Declaring war on the Earth using the battleship Libra, his main objective over targeting the Earth was to stop humanity from fighting each other and to have his sister Relena lead the people in a new age of peace.