Sergeant "T-rex" Turner is the leader of the Dino Trackers in Jurassic Park Series 2. His profession was in wildlife management, he has worked over 20 years in animal management on Kenya's Masai Mara Game Preserve. Headed up East Africa's most successful anti-poaching program. After that he became the leader of Dino Trackers to oppose the "Evil" Dino Raiders.
Information from the Collector Card of this character (nr. 34).