John Arnold is an engineer for InGen.
John Arnold featured in The Fall. He was engineer for InGen. When John Hammond became suspicious of Biosyn's activity, Arnold sneaked into Wikia HQ with some other InGen hunters. They found the artificial environment, and the way out.
Later, he tried to stop Biosyn from unleashing the dinosaurs. He drove through Biosyn's guards, and planned to collapse the exit tunnel with the weight of the car. Unfortunately, an Allosaurus got out first and smacked the car with its tail. As the car rolled away, it exploded, killing John Arnold.