Uninvited

A multimillionaire intent on fleeing criminal prosecution, Walter wields influence and wealth to manipulate others and control the voyage. His arrogance and willingness to endanger others accelerate the shipboard chaos. He meets his end when the cat turns the pursuit for money into a fatal mistake.

Walter's associate who participates in the scheme and clashes with others as tensions rise. He intervenes in a confrontation, but the cat's presence and the ensuing violence prove deadly, culminating in a lethal bite that seals his fate.

The ship's captain and a practical, decision-minded leader trying to protect her crew and passengers. She navigates danger, seeks to secure safety, and ultimately survives by securing passage to the Cayman Islands, leveraging resilience and resourcefulness.

A spring-break traveler on the yacht who becomes entangled in the tense atmosphere and dangerous events. She experiences fear and danger, especially during the attempted assault, and remains a figure navigating peril rather than a passive passenger.

A carefree passenger whose naivety contrasts with the mounting danger. She dies after ingesting poisoned bread during the cat-related chaos, underscoring how quickly a voyage can turn deadly.

Walter's boisterous, heavy-drinking friend whose reckless behavior foreshadows the moral unraveling aboard the yacht. His demise occurs during the cat's rampage on deck, illustrating how chaos claims even loud bravado.

A curious biologist who uses improvised tools to study blood samples and deduce abnormal blood cell counts. He emerges as a rational thinker, helping the group recognize the venomous nature of the cat's bites and guiding survival decisions.

One of the three young crew members invited aboard. He attempts to lure the cat with food, but his plan backfires when a steam blast from a failed shot kills him, illustrating the peril of reckless actions around a dangerous predator.

Another of the young crew, who initially resists wrongdoing and later pays a heavy price. He loses fingers to the cat bite and ultimately dies by suicide after a cascade of traumatic events, highlighting futile attempts to control an escalating threat.

Genetically altered predator that escapes captivity and drives the film's tension with relentless attacks. Its venomous bites and unpredictable behavior make it the central antagonist whose presence unravels the crew's plans.

A scientist involved in the facility's experiments; his role centers on the cat's origin and the experiment's consequences, underscoring the reckless ambitions behind genetic manipulation.

Assistants in the genetic lab, representing the technical side of the experiment. Their presence hints at the behind-the-scenes operations that contribute to the catastrophe on board.

A young beachgoer who later picks up the cat, unaware of the danger it still carries. This closing beat hints at the cat's lingering threat beyond the voyage.