Harold Greenwood

A friend of John Hammond in the game Jurassic Park: Trespasser. Harold probably went to Isla Sorna with a 'electronic device' after the Isla Nublar Incident, but before the events of The Lost World. In his memoires Hammond descirbes their first meeting:

"I first met Harold Greenwood in 1992, he was a, an American. Introduced to me as a former Green Beret. He asked a number of questions about the disposition of the InGen Technology. Harry claimed to be a friend of my former son-in-law, I liked him. He was confident, dashing. Greenwood carried some sort of an electronic device which we were told he built himself, based on plans he found on the internet…"

Hidden inside the Dam on the Trespasser version of Isla Sorna a skeleton can be found. The deceased starved while hiding from the Raptors, after he'd managed to crawl into the dam loosing blood. While it's still speculation to assume the skeleton and Harold Greenwood are one-in-the-same, it's generally accepted.