Sean Fifield

Fifield was hired by Weyland Corp to partake in a space expedition aboard the USCSS Prometheus to the distant moon LV-223. After spending two years in hypersleep Fifield, along with the other crew members, was woken up by David. Fifield was approached by Millburn, who wanted to be his friend, but he coldly rejected it. As the Prometheus arrived on LV-223, Vickers, Shaw and Holloway briefed the crew on their mission to find the Engineers. Once the Prometheus lands on LV-223 the team (Shaw, Holloway, David, Ford, Jackson, Millburn and Fifield) explores a large artificial structure nearby. While inside the Engineer Temple, the team came across a water-related terraforming system that made the air within the temple breathable. As the team moved deeper into the temple, Fifield activates his PUPS in order to analyze and virtually map the entire temple. David activated the temple's holograms, which led them to find the corpse of an Engineer. Fifield panics and decides to flee further into the Engineer Temple with Millburn. Due to a rapid windstorm, the team was forced to return to the Prometheus. Fifield and Millburn however, were unknowingly left behind and had no choice but to stay in the temple until the windstorm calms down.

The two crewmembers soon encounter two Hammerpedes that emerge from the black liquid and proceed to attack Millburn. Fifield uses his utility knife to cut the Hammerpede's head off, his helmet is sprayed with acid and he falls into the Black Liquid. At a later stage his camera reappears outside the Prometheus ship and the crew ventures out to investigate, with a seemingly incapacitated Fifield waiting for them. Mutated by the Black Liquid, Fifield slaughters several crew members. His transformation allowed him to survive being run over and shot in the head. However, he was eventually incinerated by a flamethrower shot with a shotgun and crushed by a RT Series Group Transport.