1. Li Xin (Xin): The protagonist of the series. He is a young peasant with dreams of becoming a great general and restoring Qin's former glory.
2. Ying Zheng (Ei Sei): The king of Qin and the future First Emperor of China. He is a ruthless and ambitious ruler who dreams of conquering all of China under his rule.
3. He Liao Diao (He Liao Diao): A talented general of Qin and one of Xin's mentors. He is a master of strategy and tactics, and he played a key role in Qin's victory over the Zhao state.
4. Meng Tian (Mou Ten): Another gifted general of Qin. He is a brave and loyal warrior who is always willing to put his life on the line for his country.
5. Wang Ben (Ou Hon): A young and talented general of Qin. He is a hot-blooded and impulsive warrior who is always eager to fight.
6. Lü Buwei (Lu Buwei): A wealthy merchant and politician who is the Chancellor of Qin. He is a cunning and manipulative man who is always looking for ways to increase his power and influence.
7. Zhao Ji (Zhao Ji): The Queen Mother of Qin and Ying Zheng's mother. She is a beautiful and intelligent woman who is deeply involved in the politics of Qin.
8. Yan Dan (Yan Dan): The Crown Prince of Yan and the future Emperor Wu of Yan. He is a wise and compassionate ruler who is dedicated to protecting his people from Qin's aggression.
9. Li Mu (Ri Boku): A legendary general of Zhao and one of the greatest generals of China. He is known as the "Genius Commander" for his brilliant strategies and tactics.
10. Hou Jian (Ko Zen): A young general of Zhao and the son of Hou Ken, the former Prime Minister of Zhao. He is a skilled warrior with a strong sense of loyalty to his country.