The Vermillion family's eldest son who values justice and has competent leadership skills.

Regardless of social status, he holds those who seek to improve themselves in high regard. He adores and respects his younger brother, Leopold, and his older sister, Mereoleona.

Captain of the Crimson Lion Kings

Mereoleona and Fuegoleon's younger brother.

Tackles any challenge head on. Once he gets started, nobody can stop him from striving for the improvement of himself and others.

His innocence and confidence are due to his doting older siblings, who he admires greatly and tirelessly trains to surpass. He considers Asta his rival. His friends and family call him Leo.