The C6 is a autonomous bipedal robot featured in Call of Duty: Infinite Warfare. They are primarily used by the Settlement Defense Front but are also used by the UNSA, both in military and private security applications.
C6's are notably more durable than Human SDF soldiers, being able to take twice as many bullets from ballistic weaponry. They also tend to grab the player in an attempt to kill the player, and can result in an instant death if the player didn't press the Melee button. Not to mention they are sometimes able to withstand headshots, and continue fighting despite the removal of their head. Energy weapons are recommended against them, as they can make quick work of the bots, and Shock Grenades are very useful against them.