Ian Malcolm

Ian Malcolm was a mathematician who specialized in his own branch of Math, known as "Chaos Theory." He was picked by John Hammond to come to the park. He tried to impress Dr. Sattler. He was injured a collapsing outhouse and was stepped on by the T Rex. He survived the incident with only a leg injury.

The Lost World (Movie)
At some point between the time the left Isla Nublar and te events of Isla Sorna Malcolm, now a more serious and changed man, attempted to go public about his involvement in the Isla Nublar incident, violating his non disclosure agreement. John Hammond's nephew, Peter Ludlow attempted to discredit Malcolm, calling him a man that didn't know what he was talking about. This caused him to lose a lot of credibility, with many people mocking him.