(Capcom's primary storyline)
Tommy Nielsen was an Umbrella executive.
During the Raccoon City incident, he was dispatched to locate Rodriguez, and set a UBCS unit under Arnold to the task. He was most likely killed by B.O.W.s or in the missile strike that obliterated the city or ran away from the same highway that the survivors use to escape.
- Tommy has no in-game character model, his only model is his high polygon model designed for the game's pre rendered cutscenes.