Shiro Kabuto

As the younger brother of Kouji, this resilient boy serves as the sole remaining family connection for his fiercely protective sibling. Following the devastating defeat of Mazinger Z by the dark commander Ankoku Daishogun, he was taken under his father's care. Though his life was irrevocably changed by the ongoing conflict, he remains a central figure in Kouji's struggle to defend what little remains of their bond.