After yelling out to the stranger and alerting them to his presence, Marcus is soon under attack by a weathered and hulking, mechanical, metal beast which stands at a towering 7 feet, 4 inches tall and carries a mini-gun for extra devastation, and an ammo back-pack to make sure the bullets rain for a sustained duration.
When we first encounter a T-600 in Terminator Salvation, we see what looks to be the silhouette of a lone man in the distance it was a smart moment when the audience are seeing the future world with Marcus Wright (he’s as new to the future of 2018 as we are), and he is obviously relieved to see someone else in the desolate ruins of Los Angeles.