In the games files can be found an obsolete MERC unit named "Mercenary", wearing a gray balaclava, Sanford's outfit, and random military armor. The Mercenary is leftover from an old concept where the MERC were going to be more militarized. Despite not being used anywhere in the game, it can still be spawned in interactive mode where it will attack the player. Although no different stat-wise from a MERC recruit, it behaves like a Nexus agent, moving tactically and using cover. These units were then revealed and used in Madness Project Nexus' trailer, shown as some of Hank's opponents, with one of them being shown in a live-action sequence limping in an attempt to shoot Hank. Aside from this they make no canon in-game appearances yet.
from wiki
