Aubrey Davis is a central protagonist who serves as a direct link to the events of the first film. She is the younger sister of Karen Davis, the survivor from the initial encounter with the supernatural curse in Tokyo. Aubrey resides in Pasadena, California, and is initially depicted as living a life separate from the tragedy that befell her sister, until family obligation forces her to confront the unknown. She travels to Tokyo after her mother receives news of Karen’s hospitalization, driven by a sense of familial duty and concern for her sibling’s well-being.

In terms of personality, Aubrey is defined by a deep-seated loyalty and a strong sense of responsibility, though these traits are tempered by a natural caution and vulnerability. She is a compassionate individual who genuinely cares for her sister, but their relationship is complex. Aubrey harbors a quiet resentment stemming from a lifetime of feeling that her mother favored Karen, a secret guilt she carries with her. Despite this internal conflict and an initial reluctance to involve herself in the strange circumstances surrounding Karen’s breakdown, her determination quickly overcomes her fear. She is not an action hero but an ordinary young woman pushed into extraordinary circumstances, and her bravery manifests as a stubborn refusal to leave Tokyo without understanding the truth, even when every instinct tells her to flee.

Aubrey’s primary motivation throughout the narrative is the pursuit of truth and a form of justice for her sister. After witnessing Karen’s mysterious and violent death, she rejects the idea of returning home in ignorance. Her goal shifts from bringing Karen back to America to uncovering the nature of the force that killed her, believing that understanding the curse might somehow stop it or, at the very least, honor her sister’s memory. This quest for answers leads her to investigate the history of the Saeki family, the origin of the grudge, and she becomes increasingly entangled with the journalist Eason, who shares his knowledge of the curse’s occult nature.

Her role in the story is that of a protagonist who actively investigates the central mystery, moving from a passive victim of circumstance to an active, if doomed, seeker. She follows the trail of the curse from the hospital to the burned remains of the Saeki house, and finally to a rural village to find Kayako’s mother. Unlike many who simply stumble into the house, Aubrey makes a conscious decision to confront the curse directly. This decision cements her role not just as a victim, but as a key component in the cycle of the grudge, as her fate tragically mirrors that of the original ghost, Kayako. She ultimately becomes a replacement, a new manifestation of the curse bound to the house.

Key relationships drive her actions and development. Her relationship with her sister Karen is the emotional core of her journey, marked by both love and underlying sibling rivalry. Her interaction with Eason provides her with the necessary information to understand the supernatural threat, and his eventual death isolates her, forcing her to face the final confrontation alone. The most significant relationship, however, is the one she forms with the curse itself. As she delves deeper, she becomes a target for the spirits, particularly Takeo Saeki, who kills her in a manner identical to how he murdered his wife, Kayako.

Aubrey undergoes a profound and tragic development. She transforms from a relatively carefree young woman into a haunted, grief-stricken investigator, and finally into a vengeful ghost. Initially fearful and reliant on others, she grows more resolute and independent as her allies are stripped away. Her final act of walking into the Saeki house to demand answers from the curse is a moment of tremendous, if futile, courage. Her death is not just an end but a transformation. She becomes a spectral onryō, a vengeful spirit bound to the Saeki house, perpetuating the very curse she sought to destroy. In this state, her identity becomes merged with the grudge, and she is seen haunting the attic, attacking those who enter.

As a notable ability, Aubrey does not possess any special powers while alive, which highlights her vulnerability as a normal human facing a supernatural force. However, after her death, she inherits the abilities of the curse. As a ghost, she exhibits telekinetic control over her environment, such as sealing doors to trap victims. She can manifest visually to terrify her targets and makes the signature death rattle sound associated with Kayako, signaling that a person is now cursed. Her presence is tied to the dark, confined spaces of the house, particularly the attic, from which she continues the cycle of rage and sorrow that defines the grudge.