A childhood friend of Vyse who rides on the same Pirate ship. Straightforward and frank, she will clearly say what she likes and what she doesn't like. Even the pirate friends admire her agility and skill with her boomerang.

The Admiral of the First Fleet of the Armada. Within the privileged classes of the Valuan Empire, he is from a distinguished aristocratic family. He is still young among the members of the Armada, but he considers anyone who is not of noble class less than human.

Evil and atrocious Black Pirate. Aboard "Blackbeard," he attacks merchant vessels with no mercy. He is the first foe Vyse meets for ship battle.

The Admiral of the Fourth Fleet of the Armada. The only female Admiral in the Armada, as she is skilled in magic. On the other hand, she despises the battle that relies on force, as her way is to make use of information to work out a plan and to win without fighting.

A mysterious creature that can change its shape at will. It appears to be a friend of Fina from her childhood. Normally it is in the shape of a bracelet. But during a battle, it changes its shape to a weapon, such as a sword, to attack the enemies and protect Fina.

The Admiral of the Fifth Fleet of the Armada. A mechanical freak who develops multiple weapons. He rides on his flagship with numerous anomalous cannons, as he has absolute confidence in the machinery he has developed. Therefore, if anyone tries to damage his machinery, he would chase him to the end of the world to torture him to death.

An old sailor Vyse meets in his adventure. Long ago he lost his eye and arm to a huge arcwhale called Rhaknam, and ever since he has made capturing Rhaknam his only purpose in life. His experience as a sailor is excellent and is very skilled. But with his blunt attitude, he continues to sail alone on his ship "Little Jack."

Cool and self-possessed captain of the "Albatross." He is also the head of the Blue Rogues, who makes the Pirate Isle as his base, and is also Vyse's father. He is trusted by his crew, as he also takes the role as the mayor of the island.

The son of Empress Teodora, and the Prince of the Valuan Empire. In the military country of Valua, he insists on making friendly relationships with other countries. He has a very strong sense of justice, but is also rather fainthearted.

A girl who, with certain events, takes action with Vyse. Very quiet, but the smile she shows at times makes you feel her kind heart. She wears clothes of a foreign world, but no one, not even Vyse, knows where she is from.

The Lord of the Empire who holds the right to command the entire Armada. Always self-possessed, he has excellent ability to command. With an Armada and Admirals full of personality under his command, he is simply invincible. So merciless as to crush any enemy that resists, he is feared not only by the pirates but by nearby nations as well.

Captain of the Pirate ship "Claudia," with free life as his motto. He wanders the skies in search of vast treasures, beautiful women, and "excitement." One can easily see him as a light-spirited man, cracking jokes at any occasion. But in reality, even the other Pirates and Valuan Forces recognize his skill.

The Admiral of the Second Fleet of the Armada. Oldest among the five. He has served the Valuan Empire from the time of the previous Emperor, as his loyalty to the Empire is very high.