Mark Rollins

Mark Rollins is a soldier who doesn't quite fit his unit, engaged to Gracie Johanssen and trying to build something like a normal life away from the military handlers who raised him. Polite, guarded, capable of real tenderness, he's a man visibly straining against the leash of the organization that made him.

Ari Millen plays several nearly identical brothers in this show, and Mark is the one built for contrast: where his clone-brothers are menacing or broken, he's quietly decent, and Millen finds a whole different physicality and warmth for him. Watching him try to choose love over programming gives the show's clone conceit real emotional stakes.