A powerful class devil who is tasked with dealing with and fighting against fallen angels, Rias uses her powers to resurrect the slain Issei Hyoudou in order to make him her lowly servant. She is one of the most beautiful girls at the local high school.
One of the most beautiful female students at the high school that she currently attends, Rias Gremory garners a lot of attention from the male students who find it hard to not stare at her beauty. Unknown to them, however, is the fact that Rias is in fact a powerful devil sent to Earth on a mission to locate, deal with, and stop fallen angels from destroying dangerous, powerful "divine" weapons. When not attending to her daily life at school, she is dealing with her assigned mission and deals with her targets whenever she discovers that they are indeed one of the fallen angels that she must engage in combat.
Rias Gremory was originally created by Ishibumu Ichiei as part of their work on the Highschool DxD franchise. As for now, it is not known as to what inspired them to create her.