The Series 1 Terminator, also known as T-1, is the first Terminator class robot to be produced by Cyber Research Systems. Designed for extreme combat, the Series 1 was built to clear battlefields of enemy troops with its powerful weaponry.
The T-1 was originally built in limited numbers, each individually numbered and stored under individual anti-static dust coverings. Cyberdyne created this first-generation fully autonomous ground offensive system in 2003 as part of their program to re-create the work of the late Dr. Miles Bennett Dyson.
Cyberdyne could not perfect bipedal walking military robots until the Series 70, and therefore the earlier Terminator series' were fitted with tank-like treads. The Series 1 unique tracked multiple wheels give the T-1 superior grip and maneuverability over loose rubble and uneven terrain combined with the speed that a wheeled vehicle brings. This makes them very versatile, and excellent for deployment into nearly any form of environment. As can be seen below, the track arrangement, which is similar in fashion to that of early 21st Century snowmobiles, makes for a very stable and secure base. Unfortunately for Cyber Research Systems, the exposed hydraulic systems and motors visible just above the tracked wheels made the T-1 Series vulnerable to precision attacks from the sides.
The first Terminator class robot to be developed by CRS, even the Series 1 underwent several prototype stages.
Mounted on a platform capable of rotating 360 degrees, the Series 1 has a wide field of attack, with various optical sensors and a laser beam targeting system mounted inside a "head" unit. Using a primitive (by today's advanced standards) targeting system, the Series 1 is capable of identifying and eliminating multiple targets, using auditory, heat and motion sensors. This basic sensor package does however mean that the Series 1 has several weaknesses. If a human target keeps still and quiet, and masks their heat signature by positioning themselves in front of a hot object, such as a small fire, they will not be detected.
The Series 1 is constructed with a reinforced structure to provide great strength and durability. However, all of its internal mechanics are not covered by this structure and are thus vulnerable to attack. In particular, the T-1's head and neck assembly is relatively weak and exposed, as are its extended arms and exposed wiring. Usually deployed in a crouched, compact position, the T-1 will rise up, deploying its weapons, until it stands approximately eight feet tall — an imposing sight on the battlefield.
Mounted upon either side of the Series 1 are "arms" which are capable of unfolding from its main structure, each fitted with a General Electric .50-caliber minigun capable of firing 3000 depleted uranium rounds per minute, for superior firepower. Like the U.S. Navy's Phalanx systems mounted on warships, the guns are directed by a sophisticated onboard suite of radar, infrared, and optical sensors. Unlike the later Infiltrator type Terminators, the T-1 was not designed to pass for anything resembling human, and so was designed to be able to deliver maximum firepower in the shortest time, literally cutting down swathes of enemy troops. With its rapid, heavy firepower and fast maneuverability, the Series 1 is still very dangerous. Though an antiquated model, the T-1 is still produced by Skynet to this day in order to guard complexes which have wide, exposed approaches, and to patrol open grounds.
The T-1's are still in service in the year 2018 after first coming online. Skynet has improved the units to include a more basic torso shape, the head unit has been lowered down, simplified and armored to dispel sensor weakness. The sensors themselves have all been combined into two "eyes" which are structured at the side of the "head" unit. The unit is also more heavily armored, showing less exposed wiring. The tank treads have also received upgrades and have been fitted with track guards to ward off enemy fire, however the rear track for stability has no such coverings.
They are mainly used to guard important facilities and prisoners, they have not been seen in the field. Some units do have mud encrusted on their shells though, suggesting they are still used in the field in a limited fashion. These units lack the numbering systems on the torso as they are mass produced.
Terminator 3: Rise of the Machines
On Judgment Day, July 24, 2003, Series 1s are deployed by the T-X on the Cyber Research Systems complex. They kill all the humans in sight. Skynet continues to use them to kill humans after Judgment Day.
By 2018, Skynet is still using the T-1s to kill humans along with the Series 600.
- There is a concept art of the HK-Tank for the film Terminator Salvation. This version of the HK-Tank resemble the T-1 in Terminator Salvation. Note that this HK-Tank is mounted with miniguns just as well as the T-1.
- The T-1 from Terminator Salvation is once referred as T-100 by McG. 
- The T-1 bears a resemblance to the War Machines in a Doctor Who story of the same name. Although the War Machine is simpler in design, the two have a similar shape: both have firearms mounted onto the top-left and right on their structures and numerical designations can be seen on the T-1. Also, like the T-1s, the War Machines are the weapons of a self-aware supercomputer that has turned against humans, WOTAN.
- Terminator Dreams (Mention only)
- Terminator Hunt
- Terminator Salvation novel
- Terminator Salvation: Cold War
- Terminator Salvation: From the Ashes
- Terminator Salvation: Trial by Fire
- Video games
- Terminator 3: Rise of the Machines game
- Terminator 3: War of the Machines
- Terminator 3: The Redemption
- Terminator Salvation arcade game
Terminator 3: Rise of the Machines