Rias is the little sister of SirZechs, the little sister to the devil king. She’s of pure blood of the Gremory household. She’s a kind, smart, loving, and compassionate woman. Something happened when Issei transferred power from his Red Dragon Boosted Gear into Rias. Causing Rias’s body to develop into a strong and powerful devil. With heightened strength, speed, stamina, and durability. She can be a bit more confident, but she still cares for others. Sometimes teases people that she likes.