Isamu Kurogane is the GoLion team's second-in-command and pilot of the Red Lion, recognizable by his blue uniform. Tall and wiry, he appears around 21-23 years old. He possesses a bold personality, frequently joking and teasing others while openly questioning team leader Akira Kogane's commands, establishing himself as the primary challenger to Akira's authority. This daring nature extends to his piloting; though skillful, his tactics often lean toward excessive risk. His rivalry with Akira gains further complexity through their shared interest in Princess Fala, whose attention both seek. Isamu's feelings for Fala add personal friction to their operational dynamic. Functionally serving as the team's lancer, his rebellious streak contrasts Akira's strategic, sometimes short-tempered leadership. His past places him among the five space pilots from the Fuji Flight Academy who returned to Earth in 1999, only to find it destroyed by thermonuclear warfare. Captured by the Galra Empire, he endured enslavement and arena combat before escaping to Planet Altea. Throughout the series, Isamu remains a capable yet defiant pilot, his core motivations and personality unchanged, including the unresolved romantic tension with Princess Fala. His surname "Kurogane" means "iron" in Japanese, a detail not explicitly reflected in his narrative portrayal.