

Alan Grant is the main protagonist in the first novel, and the first and third films.

A Tyrannosaurus rex attacks the group, separating them. Soon after, because of a tropical storm and industrial sabotage by a disgruntled technician, the park undergoes several technical failures and the dinosaurs escape their enclosures. These errors occur even though Jurassic Park is being run by expert computer engineers and well-established technical systems. Upon arrival, the experts begin to discover errors in the system, such as dinosaurs in the wrong pens and evidence of dinosaurs breeding in the wild. Hammond invites palaeontologists Alan Grant and Ellie Sattler, mathematician Ian Malcolm, and his investors' attorney, Donald Gennaro, to tour the park. In order to open the park, he must first get investors and obtain insurance by gaining the approval of several experts in different fields. It is filled with dinosaurs cloned with the help of DNA harvested from prehistoric insects found in amber.

As the novel opens, eccentric and wealthy entrepreneur John Hammond founds a high-tech amusement park on the fictional Costa Rican island of Isla Nublar.

Jurassic Park is a 1990 science fiction novel by Michael Crichton, adapted into a feature film released in 1993. Main articles: Jurassic Park (novel) and Jurassic Park (film) A dark grey cell indicates the character was not in the film.This table shows the characters and the actors who have portrayed them throughout the franchise.
