All three series are machine-based cybernetic organisms —living tissue over a hyperalloy endoskeleton. The T-800 is Skynet's first successful Infiltrator unit, capable of infiltrating the Resistance. The T-850 is an upgraded version, hardened against plasma attacks and with more powerful features. The T-888 is another upgraded version which is more advanced.
- Main article: Series 800
The Series 800 Terminator uses an iridium nuclear-energy cell as the power source. In the original timeline, the T-800 was activated in 2026, but in an alternate timeline, the Series 800 Terminator has been mass produced prior to 2015.. In yet another timeline, a prototype T-800 was activated in 2018.
- Main article: Series 850
In at least one timeline, Skynet decided to harden the Series 800 Terminator against plasma attacks and add new features to aid in the destruction of mankind. The Series 850 Terminator was created after 2029.
The Series 850 Terminator is powered by two hydrogen fuel cells.
- Main article: Series 888
The Series 888 Terminator is an alternate successor to the Series 800 Terminator. It was made to be faster, stronger, and more resistant to damage. When knocked offline, it could reboot in two minutes. The Series 888 Terminator also possesses a flexible endoskeleton and is capable of activating even if the head is separated from the torso.
- T-801 - Heavy Combat
- T-803 - Light Assault Infiltrator
- T-804 - Tactical Infiltrator
- T-806 - Recon Infiltrator
- T-808 - Medium Assault Infiltrator
- T-810 - Advanced Stealth Infiltrator
- T-831 - Heavy Combat Chassis Unit
- T-835 - Mobile Assault Unit
- T-882 - Tactical Command Unit
- The phrase 8xx has never actually been used in the Terminator franchise. It is a coined word meant to encapsulate the Series 800, 850, and 888 lines of Terminators. This is similar to the phrase "x86", coined to encapsulate Intel 286, 386, 486 and Pentium line of compatible chips into a single phrase.
- The Series 850 and Series 888 Terminators have appeared in different timelines, and have yet to be shown to co-exist in the same timeline.
- Despite being redundant by comparison to the Series 1000 and Series X Terminators, the Series 8xx Terminators are shown to be remarkably adaptable and persistent, traits that have allowed them to defeat their superiors despite the odds.
- In Terminator 2: Judgment Day, the T-800 assigned to protect John Connor was able to hold its own against a T-1000 in hand-to-hand combat, but due to its mechanical nature, it suffered several instances of structural damage. Regardless, the T-800 restarted itself by using its alternative power cell, which in turn allowed it the chance to launch a surprise grenade attack on the T-1000, subsequently causing its demise.
- In Terminator 3: Rise of the Machines, a T-850 that was likewise reprogrammed to protect John Connor proved to be a moderate threat to the T-X. It held its own in hand-to-hand combat, dominating the fight at first, though this was relative as the T-X was never in any real danger of being disabled by the T-850. That said; once the T-X escalated its aggression, the T-850 was swiftly defeated. However, like the T-800 before it, the T-850 was able to overcome its first defeat and use its unstable hydrogen fuel cell to obliterate the T-X (and itself along with it).
- However, a T-1001 terminated a T-888 with ease.
- ↑ The T-850 is stated to be an obsolete model, and was fielded by Skynet only because of the known emotional attachment John Connor had for the its living tissue model applied to the unit. This allowed it to be successful in its termination mission targeting John in the future.
- ↑ Mentioned by Kyle Reese in the film The Terminator.
- ↑ Terminator: Revolution
- ↑ Terminator Salvation film
- ↑ Terminator 3: Rise of the Machines film
- ↑ Terminator: The Sarah Connor Chronicles
- ↑ The first usage of the "808" was in the comic Terminator: The Burning Earth to depict the specialty Infiltrator called Aurora.
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