Leslie Orlav (Earth-5875)

Leslie Orlav was a member of the UNSC Marine Corps, who was stationed aboard the prowler UNSC Red Horse in October 2552 as a part of Sergeant Zhao Heng Lopez's squad.

Skirmish on the Mona Lisa
As a member of Sergeant Zhao Heng Lopez's Marine squad aboard the UNSC Red Horse, Orlav later participated in the reconnaissance mission aboard the prison ship Mona Lisa. After a brief encounter with unarmed and unarmored sangheili, the Marines were ordered to carry the Cole Protocol, splitting in two teams, to which Orlav was assigned under Corpsman Ngoc Benti alongside Clarence, Maxwell Gersten and Quincy Tsardikos.

When the Marines passed through the recycling plant of the Mona Lisa, they were attacked by a xenomorph horde. A Facehugger spat acid into Orlav's face, killing her.