Age: 20 Height: 170cm Rank: Ensign (3rd Class Space Officer), Tactical Chief of Space Battleship Yamato Appearance: Short, dark green hair. A young man with a toned physique. Characterized by sharp eyes, he possesses a dignity befitting a commander despite his youth. Personality: Has a very strong sense of justice and cares deeply for his comrades. An action-oriented individual with excellent intuition, creativity, and leadership, capable of making bold decisions even in difficult situations. He has the courage to take dangerous gambles to realize his ideals. On the other hand, he has a strong sense of responsibility and suffers deeply over failures caused by his own judgment, growing from those experiences. A young man who has acquired calm judgment like Kodai, though he sometimes takes detours or acts recklessly, and does not hesitate to speak up to high-ranking officials. He never forgets respect for his superiors.

Age: 27 Height: 174cm Rank: Captain (1st Class Space Officer), Captain of Space Battleship Yamato Personality: A hot-blooded man with a strong sense of justice who cares for his comrades, though he sometimes acts on emotion. However, he grows with every hardship, becoming a young man with a sense of responsibility and calm judgment. Fiance of Yuki Mori. He calls her "Yuki." He has kept her waiting for marriage for about five years.

Age: 27 Height: 165cm Rank: Commander (2nd Class Space Officer), Captain of Supply Mother Ship Asuka Personality: Possesses calm and intellectual judgment, a strong sense of responsibility, and compassion for her comrades. Combining inner strength with the ability to take action, she supports the crew even in harsh battles and has built a deep relationship of trust with Susumu Kodai. Fiancee of Susumu Kodai. She calls him "Kodai-kun," or "Susumu Kodai" when speaking firmly. Kodai's subordinates call her Commander Yuki, Yuki-san, or Big Sis Yuki.

Age: Deceased at 58 Height: 180cm Rank: Admiral, First Captain of Space Battleship Yamato Personality: A master commander with extensive combat experience, characterized by composure and a strong sense of responsibility. He trusts his subordinates deeply and values human life above all else, yet makes resolute decisions when necessary. A noble figure who fulfilled his mission to the end despite his illness to protect the future of Earth and humanity. He sleeps with the Yamato to protect Earth and is enshrined at Hero's Hill.

Age: Late 30s Height: Late 170s cm Personality: Leader of Galman-Gamilas. A politician and military leader with great charisma and outstanding leadership, who puts the prosperity of his homeland Gamilas first. While showing a cold side, he has a deep sense of responsibility toward his people and trust in his subordinates. A worthy rival who comes to respect Susumu Kodai and his crew throughout the story.

Name: Starsha Iscandar Age: Unknown Height: Late 160s cm Personality: Queen of Iscandar. Combining deep compassion with high intelligence, she entrusts the Cosmo Reverse System to save a dying Earth. Though a pacifist who dislikes conflict, she is a noble person with a strong sense of responsibility and resolve, sacrificing her own life to carve out a future for humanity. Wife of Mamoru Kodai.

Age: 29 Height: Around 165cm Rank: Commander (2nd Class Space Officer), Captain of Wave Motion Experimental Ship Ginga Personality: Equipped with intelligence and calm judgment, she approaches missions with a strong sense of responsibility while also possessing the kindness to care for her comrades and family. A rational personality who acts while objectively assessing the situation, playing a crucial role in the future of humanity.

Age: Late 40s Height: 180cm Rank: Captain (1st Class Space Officer), Captain of Battle Carrier Hyuga Personality: Calm and logical, yet deeply compassionate toward his comrades. A person of outstanding intelligence and responsibility who never gives up even in a crisis and pursues the best possible solution. He was the best friend of Susumu's late older brother, Mamoru Kodai, and has guided Susumu.

Name: Sasha Iscandar Kodai Age: 17 Height: Late 150s cm Rank: Petty Officer 2nd Class, Assigned to the Third Bridge of Space Battleship Yamato Personality: Gentle and kind-hearted, with a strong sense of justice and responsibility, filled with compassion for others. Despite being toyed with by a cruel fate, she is strong-willed, accepting her mission and making courageous decisions for the sake of the future. Daughter of Mamoru Kodai and Starsha.

Name: Yurisha Iscandar Age: Early 20s Height: Around 160cm Personality: Starsha's younger sister. Gentle and kind-hearted, with a personality full of compassion and a strong desire for peace, yet she also possesses a sense of responsibility as royalty and a strong will. A person with high intelligence and mental strength who plays an important role for the future of humanity and Iscandar.