David Postlethwaite (Earth-7149)

"I saw a drum of this stuff fall into a beachhead bunker once. The blast put a freighter in dry dock for seventeen weeks. Great stuff!"

- - David Postlethwaite to Ellen Ripley

David Postlethwaite was an inmate at the Fiorina 161 Class C Work Correctional Unit, on the penal colony Fiorina 161. He fought as one of the initial survivors of the Massacre of Fiorina 161 against the lone xenomorph the inmates named the Dragon, in August 2552.

Early life
David Postlethwaite was to life at the Fiorina 161 Class C Work Correctional Unit, on the penal colony Fiorina 161 for child abuse.

Massacre of Fiorina 161
"There's definitely something in here with us!"

- - David Postlethwaite Following Ellen Ripley's arrival on the prison, she entered in the facility's mess hall to talk with Leonard Dillon, the religious leader at the prison, sitting alongside David, Ted "Junior" Gillas, and Peter Gregor.

Following the death of Superintendent Harold Andrews, David helped Ripley and Francis Aaron on their plan to gather quinitricetyline to use it against the Dragon at the ventilation shafts of the correctional unit, as he knew of the chemical's volatile nature from beforehand.

Bait-and-chase plan
"What if it won't co-operate? What if we get lost?!"

- - David Postlethwaite criticizing Ellen Ripley's plan After the catasthropic failure of the initial plan, the survivors were forced to use themselves as a bait for the Dragon to lure the alien into the metal works of the prison, so it could be melted to death in lead. While terrified and dubious of the effectivity of the plan, David agreed with it as he had no other better alternative.

Death
Following the initial sighting of the xenomorph at the foundry, David found the corpse of another prisoner who perished at the chase. He later found the Dragon himself, and was able to draw its attention by throwing a flare at the Runner before. He was almost killed when the door he was assigned to failed to shut, but Postlethwaite slammed it before the Dragon could enter. He then guarded the door while the Dragon continued to stalk the other prisoners through the tunnels.

Unaware of it, the Dragon had entered the ventilation shaft and sneak behind David through the window he was assigned to. When he noticed the creature stood behind him, it was too late, and it pierced his skull with its inner jaw through the window of the door, splattering his blood and brain parts through the walls.

Personality
"Don't you start bullshitting, Dillon. We're gonna be trapped in here like rats."

- - David Postlethwaite to Leonard Dillon Despite being arguably the worst offender and criminal at the Fiorina 161 Class C Work Correctional Unit, David was among the most amicable and intelligent of all the inmates, and was friendly towards Ellen Ripley, always equitably conversing and engaging with her. Conversely, he also called Francis Aaron by the offensive nickname of "85", but not out of malice, but simply habit. He constantly disagreed with Leonard Dillon over his leadership and decisions to take down the Dragon.