Hiiro Kagami is a central character in the tokusatsu series Kamen Rider Ex-Aid. A highly skilled and stoic surgeon, he transforms into Kamen Rider Brave, wielding the power of the Taddle Quest Gashat. Known for his professionalism and emotional restraint, Hiiro initially distances himself from others but gradually opens up. He plays a key role in battling the Bugster Virus, supporting the protagonist Emu Hojo, and faces personal struggles related to his past, especially concerning his lost love.