Benimaru is a highly skilled and powerful ogre who becomes a core subordinate of Rimuru Tempest, the protagonist of 'Tensei shitara Slime Datta Ken' (That Time I Got Reincarnated as a Slime). After being saved and named by Rimuru, Benimaru evolves into a Kijin and gains immense strength and abilities. He is the leader of the Kijin and serves as a general in Rimuru’s newly established nation of Tempest. Benimaru is known for his loyalty, strategic mind, and combat prowess, playing a critical role in defending Tempest against various threats and helping it grow into a powerful nation.