|Appearance(s):||28 Days Later (comic series)|
|Profession:||US Army soldier|
|Cause of death:||Shot by Stiles|
Following the Original Outbreak of the Rage Virus in Great Britain, Mary and the rest of Sergeant Rodriguez's squad travelled to Britain to patrol England while NATO repatriated London on the Isle of Dogs.
Approximately twenty-seven weeks after the Original Outbreak, while Mary and the squad were patrolling Cumbria they came across Selena and Clint Harris in the streets. When Luis confirmed that they were not Infected and Mary checked Clint's gunshot wound to make sure that he wasn't infected, Luis offered to take them to District One in London.
Just then, Captain Stiles arrived and murdered Luis, prompting Mary and the others to open fire on him. However, Stiles was easily able to gun down and murder Mary and her two fellow soldiers. Minutes later, Clint apologised to the dead Mary and took her gun from her corpse to use against Stiles.