T. Alexander was an InGen mercenary serving in InGen's Security Division.
Biography
Alexander was one of the mercenaries serving under the InGen contractor who were summoned to Isla Nublar by Vic Hoskins to handle the situation developing there. He participated in Hoskins' plan to use the Jurassic World Velociraptor Pack to kill the escaped Indominus rex. But when I. rex used her raptor DNA to convince the raptors to turn against the humans, they turned against the humans. During the subsequent ambush and battle, Alexander was disorientated in the chaos and turned around, only to see Delta lunging at him. He was torn apart and killed - his death being witnessed by those in the Control Room.
Behind the scenes
His name might be a reference to the visual effects supervisor of Jurassic World Tim Alexander.