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 pilot, Zechs feels that he's betrayed himself and his father's ideals. As a result of his many battles, he believes that he's not worthy of his family's name because of how much blood is on his hands, not even feeling worthy of the Peacecraft name.
Before dawning the title of Lightning Count, Milliardo Peacecraft was the heir to the Peacecraft family of the Sanc Kingdom. However, the Kingdom was soon destroyed by the Alliance Military, burning the Peacecraft Castle to the ground and killing all of Milliardo's family.