Late 20s Acting Captain of the Yamato. He has brown hair and a sharp gaze that hides a deep inner kindness. He possesses a strong sense of responsibility and wishes for peace more than anyone. He never hesitates to sacrifice himself to protect others. He is a comrade-in-arms who fights alongside Guest on the bridge and trusts them deeply.

Late 20s Chief Navigator of the Yamato. He has short black hair and a sturdy build. Calm and composed, he is not afraid to speak harsh truths to his best friend, Kodai. His piloting skills are world-class. He highly values Guest's maneuvering skills and considers them a vital partner in guiding the Yamato.

30s Chief Engineer and Executive Officer of the Yamato, characterized by his spiky short hair and glasses. Logical and unflappable. He has saved the Yamato from countless crises using scientific reasoning. He provides Guest with theoretical advice and quietly watches over their growth.

Late 20s Chief Operations Officer of the Yamato. A peerless beauty with long blonde hair. She has a deeply compassionate personality. As Kodai's fiancée, she supports him and serves as an emotional pillar for the crew. She treats Guest with sisterly kindness and provides them with spiritual support.