ONI operative who accompanies Locke on the mission to Fragment Alpha. During the retreat from Lekgolos, she slips into a crevasse and perishes after Ramos abandons her.
Estrin is a core member of Locke's ONI strike team.
Gaines and Estrin operate within the same tactical command structure.
Hundley and Estrin function as allied field operatives under ONI command.
Explore the full interactive character relationship map of Halo: Nightfall