Gentoku Himuro is a prominent character in the tokusatsu series Kamen Rider Build. Initially introduced as the stern and ambitious aide to Seito's prime minister, he undergoes significant character development. After being exposed as a villain, he becomes an anti-hero and eventually redeems himself. As Kamen Rider Prime Rogue, Gentoku wields the power of the Prime Rogue Fullbottle, fighting to protect his friends and atone for his past misdeeds. His journey is marked by inner conflict, redemption, and determination.