Bhool Bhulaiyaa

A psychiatrist with unconventional methods who is called to treat Avni. He suspects dissociative identity disorder and uses his clinical insight to guide the family toward a cure. His growing sympathy for Radha adds a personal stake beyond his professional role.

A modern archaeologist's wife whose dual identity triggers the haunting in the palace. Her DID manifests as Manjulika, a vengeful spirit, complicating relationships with Siddharth and Radha. Her actions drive the plot toward a psychologically informed resolution.

Siddharth is Badri's heir and Avni's husband, caught between tradition and modernity. He treats Avni with care while facing pressure from Radha and the palace's legends. His relationship with Avni and his role in the mystery reveal a dilemma between duty and affection.

Adopted daughter of Badri and a longtime confidante of Siddharth who loves him. She becomes a focal point of suspicion as the events unfold around Avni/Manjulika. Her loyalty to the family and her heartbreak inform her actions throughout the story.

The patriarch of the Chaturvedi family who heads the former royal lineage. He seeks to protect his family while navigating the palace's curse and the demands of tradition. His leadership steers the group toward exorcism and psychiatric intervention as possible solutions.

Batukshankar's daughter who helps Avni with the duplicate key and unintentionally unlocks the third-floor chamber. She serves as a catalyst that sets the haunting events in motion. Her actions highlight the chain of events triggered by curiosity.

A scholar and confidant connected to the palace's legends, whose interactions with the family reveal social tensions and cultural context. His role deepens the mystery and provides a lens on artistic and literary perspectives in the palace history.

A renowned exorcist summoned to the palace who is also a mentor to Aditya. He orchestrates a plan to guide Avni toward her cure, blending spiritual ritual with psychological insight. His presence underscores the film's clash between tradition and science.