Who is Hiroshi Matsumoto from Hocus Pocus and what is their importance?

Hiroshi Matsumoto is the warden of the Athena Prison. He was a child of Hiroshima, and he witnessed the horrors of the radiation and destruction first-hand. As warden, Hiroshi feels empathy for the black prisoners and believes that they are being discriminated against by his fellow Japanese bosses. Hiroshi, none-the-less, follows orders and does what he is told. Hiroshi is almost killed during the prison riots. He escapes but frost bite costs him toes and fingers. In the end, he takes his own life.