Sona Sitri

Sona Sitri is the student council president, though that position is merely a facade. In reality, she is a devil heiress to one of the most powerful families in the Underworld. Along with her friend and rival Rias Gremory—another heiress to an influential family that runs the Occult Research Club—she must protect the human realm from rogue devils (those who rebelled against their masters and went wild) and other supernatural dangers.

Her appearance reflects elegance and beauty: short jet-black hair, violet eyes, and square glasses. Although she isn't as physically developed as Rias Gremory or Tsubaki Shinra (the queen of Sona's board), her coolness and demeanor make her stand out at the academy.

Thanks to her Sitri lineage, she has complete control over water, and also possesses demonic abilities such as night vision, flight with bat wings, mind control, teleportation through magic circles, and the ability to understand and speak all languages.

lives with his parents in the Sitri mansion.

As for her duties, she is a demon so she only has to do normal demon things, fulfill contracts of people who summon her, protect the territory from rogue Demons (demons who rebelled against their masters and became wild monsters) among other demon things.