The Ghosts of Hauntings are a trio of ghosts with the powers to see across time and are aptly names Past, Present, and Future. They work at Haunted High as the Hall Moanitors and for the longest time were the only ones to know of Principal Revenant's true designs.
The three generally act as the lackeys of Principal Revenant. Future predicts students' actions, Present carries out detention chain sentencing, and Past collects records of student activity. The three become better people when Revenant gives up her scheme.
- Intangibility: Ghosts are intangible and are able to pass through solid objects.
- Flight: Ghosts are able to fly.
- Immortality: Ghosts like most undeads are immortal.
- Future Vision: The ghost Future can see into the future.
- The Ghosts of Hauntings are based on the Ghosts of Christmas Past, Present and Yet to Come from the 1843 book A Christmas Carol.