NOTE: For the novel version of this character, click here.
Don't get cheap on me, Dodgson. That was Hammond's mistake.
~ Nedry making Dodgson pay the bill for Nedry's lunch as well as deriding Hammond.
I'm totally unappreciated in my time. You're gonna control this whole park in this room with minimal staff for up to three days. You think that kind of automation is easy? Or cheap? You know anybody who can network eight connection machines and debug two million lines of code for when I've been for this job? Because if you can, I'd love to see you try!
~ Nedry complaining to John Hammond about not getting extra money in his job.
Ah ah ah! You didn't say the magic word!
~ Dennis Nedry's famous quote.
Dennis Nedry is the central antagonist of the 1993 film Jurassic Park, an adaptation of the 1990 novel of the same name.
He is a troublesome and overweight computer-network engineer for the successful dinosaur-cloning faculty he was ordered to program without many details on what the park actually did and was called to the island to fix numerous bugs in the system. His meddling resulted in the dinosaurs escaping and running amok, as well as the deaths of several characters in the film, including himself.
John Hammond refused to pay him any extra money for his work. Eventually, Lewis Dodgson of Biosyn offered Nedry $1,500,000 to steal embryos worth of fifteen dinosaur species from Jurassic Park's labs and gave him a canister disguised as Barbasol shaving cream to store the embryos inside. In order to do this — and make a swift escape from the visitor center and drive away in a Jeep Wrangler — Nedry had to shut down the park's security systems, including the electric fences surrounding the dinosaur paddocks, with the exception of the raptor fences (due to the fact they were the most dangerous dinosaurs due to their speed, agility and intelligence). Without power, the electric fences shut down, thus allowing all the dinosaurs, except the Velociraptors, to escape.
Later that night, Dennis was driving toward the docks to deliver the stolen embryos when he got lost in the jungle during the bad storm and accidentally hit a stack of logs. His car got stuck, so he had to get out and use a winch to help him get out of this dilemma. Unfortunately, for him, while looking for a tree to tie the other end of the winch to, he came across a juvenile Dilophosaurus. The dinosaur was initially curious and hesitant, cautiously sizing Dennis up. Flustered and knowing practically nothing about dinosaurs or how they behave, Nedry frantically tried to shoo it away with a stick. After that, he said to the dinosaur he'll run it over when he comes back down. Eventually, the animal concluded that Dennis was weak enough to kill and the Dilophosaurus began spraying venom in Dennis' chest and then into his eyes. Dennis, now blind, attempted to make his way for his car, but hit his head, causing him to drop his Barbasol can. He scrambled into the Jeep, but upon closing the door he immediately realized that the Dilophosaurus had found its way into the car, where it subsequently mauled and devoured Dennis.
The actions of Dennis Nedry led to the death of at least four people, including himself on Isla Nublar. But in the years that followed led to a positive advantage to the dinosaurs on Isla Sorna. The dinosaurs were originally created as a tourist attraction, but thanks to Nedry, the dinosaurs were released into the wild, without any fences, guards or even government involvement. In a deleted scene for The Lost World: Jurassic Park, Nedry is the only deceased Jurassic Park employee that Peter Ludlowdoesn't mention, and Ian Malcolm said that the incident left only three people dead (Donald Gennaro, Robert Muldoon and Ray Arnold), while Dennis is a fourth victim. Assuming this isn't just a mistake, then it can be presumed that no one learned of Nedry's death and assumed he got away without any consequences, or alternatively everyone knew about Nedry's death, yet didn't feel any sorrow about it.
The origins of Jurassic World were built upon Nedry's actions. They did everything to prevent the same thing that happened to Jurassic Park about 20 years earlier. Despite this, the park ended up the same way as the original, at the hands of the Indominus rex. The incident later led to the creation of the Indoraptor and by extension dinosaurs escaping into the mainland.
Dennis Nedry (right) talking with Lewis Dodgson (left).