A chaos mathematician tasked with evaluating the risks of the park, known for his theories on unpredictability and his critical perspective on the project.

The ambitious creator of the park, characterized by his visionary ideas and a somewhat careless attitude towards the potential dangers of bringing dinosaurs back to life.

An 11-year-old dinosaur enthusiast and grandson of Hammond, who shares a strong bond with Dr. Grant due to his passion and knowledge of dinosaurs.

An 8-year-old girl and Tim's sister, initially skeptical of the park, who grows braver as the events unfold.

The park's courageous game warden with extensive experience in managing large animals, tasked with ensuring safety amid escalating chaos.

The geneticist responsible for designing the park's dinosaurs, who navigates the challenges and ethical dilemmas of cloning extinct species.

A paleobotanist and Dr. Grant’s colleague, known for her expertise and intuitive insights into the park's hidden dangers.

The park’s chief engineer, focused on system operations and sustaining calm under pressure, despite the park's growing instability.

A lawyer for InGen invested in the park’s success, initially pragmatic but increasingly concerned about the unfolding events.

A skilled programmer at the park who takes advantage of his position, leading to significant complications in park operations.

The park's veterinarian, bringing expertise in avian care to the treatment of the park's unique dinosaur population.

The publicist tasked with managing perceptions of the park, whose responsibilities include overseeing Hammond's grandchildren during their visit.