Cold on the outside but warm on the inside. He possesses a tactical advantage and is strong in both close-quarters and long-range combat. He exhibits powerful leadership and the qualities of a brilliant strategist.

Jealous and incompetent in tactics. He has more experience than Yi Sun-sin and maintains a rival relationship with him.

The vanguard commander and a disciple of Eo Yeong-dam. He possesses high battle intelligence and a kind personality.

Highly narcissistic and blunt. He has good geographical judgment and excels at ambushes and close-quarters combat, though he is mediocre at long-range.

A vanguard commander like Yi Un-ryong. He is somewhat short-tempered and prone to acting impulsively.

Possesses excellent geographical judgment and tactical skills. He is the mentor of Yi Un-ryong and knows the sea intimately.

Yi Sun-sin's lieutenant. He is skilled in tactics and excels at close-quarters combat.

Calm and composed. He is Wakisaka's cousin.

Calm, highly narcissistic, and polite. He is one of Wakisaka's lieutenants.