- Mysterious appearances and disappearances: The opera ghost would suddenly appear or vanish from thin air, often startling the audience and performers.
- Eerie music: The opera ghost was known for playing haunting melodies on the violin or organ, creating an atmosphere of suspense and dread.
- Vandalism and sabotage: The opera ghost would sabotage performances by damaging sets and costumes or causing accidents to befall performers.
- Haunting messages: The opera ghost would leave cryptic messages or warnings written in blood or scrawled on walls and mirrors.
- Whispers and rumors: Whispers and rumors about the opera ghost spread among the cast, crew, and audience, fueling the belief in his existence and creating an air of mystery and fear.
Overall, the opera ghost used a combination of eerie appearances, haunting music, sabotage, and psychological manipulation to make his presence felt at the opera, creating a sense of terror and unease among everyone associated with the production.