Suzaku is the anti-heroic deuteragonist of the anime and manga series Code Geass. He is an Honorary Citizen and soldier of the Holy Britannian Empire and the best friend and rival of Lelouch vi Britannia. According to Lelouch, before the Britannian invasion of Japan, Suzaku was somewhat selfish, rarely putting others before himself. He also acted somewhat bratty when he first met Lelouch, beating Lelouch up and bullying him. He dedicated his cause not to endorse terrorism or rebellion, which he believed would only result in the pointless killing. Unwilling to sacrifice the innocent, he also had a strong sense of loyalty, never questioning the orders of his superiors. Despite that, elders showed him to be willing to stab them in the back if necessary. Suzaku also wished to take responsibility for his actions, and his ultimate goal was to atone for the killing of his father.

Kazuma is a former member of the Kannagi household. He was banished from the family by his father after he was defeated by Ayano during the Successor Ceremony for the Enraiha, his family's sacred sword. Since Kazuma is a son from the main family, making him the legitimate successor, even his own father considered him a disgrace for lacking the power to use fire magic, his family's specialty. Four years later, at the age of twenty-two, he returns to Japan as a skilled master of the wind arts. Though he was not responsible for the killings in the Kannagi household that began to occur upon his return to Japan, he is still prepared to start a war with his former family. The Kannagi family quickly finds out that the meek and powerless Kazuma they once knew is now more powerful than any of them, which frustrates Ayano to no end. Before being exiled from the Kanagi family, Kazuma was a kind, caring boy who only wanted his family's love, but after being cast out for being powerless, his personality took a dramatic turn. In the four years after his exile, Kazuma becomes much more cynical about the world around him, especially in matters concerning love, due in no small part to how his family treated him for being powerless. With his wind power, Kazuma tends to look down on members of the Kannagi family, finding it amusing and ironic that the very family who cast him out for being powerless, are now the powerless ones themselves compared to him.