Celeste was one of the rare female guardians on campus. She was on the council to determine Rose's fate after she froze during her field experience. After the Strigoi attacked St. Vladimir's Academy, Celeste was one of the fifty guardians that were part of the assault on the Strigoi, and rescued a group of Moroi and Dhampirs that were kidnapped. She was killed just as she was trying to escape the cave.