This page is for the 800 series in general from the alternate timeline present in Terminator: Genisys, for the antagonist that appears in genisys see T-800 (The Terminator)/Genisys or for the protagonist, see pops.
T-800s from the genisys timeline are very similar to their skynet made counterparts but with a few differences, firstly, their overall design is slightly different being almost more streamlined in places with added plates on the hands, and the leg and chest design being noticably different with the latter even having the Genisys logo. The eye sockets are wider and narrower, though this may be a trick of the light given that previous T-800s always had shadows darkening the eye sockets, therefor masking any details that has now been seen in the genisys model. The jawline is more angular and there seems to more wiring in the waist area as well as the hips being more pointed and angular as well. The feet no longer have a rounded heel but a wide flat one.
The genisys version possesses a new and up to date HUD system that even uses the Genisys logo, the overall look of the HUD is similar to the T-RIP, the resistance infiltrator propotype featured in Terminator: Salvation, the HUD's tracking marker being almost exactly the same with the exclusion of the many dots that would highlight a target.
Genisys models possess an apparently superior skin sheath to the original skynet version, having greater regeneration capabilities without leaving scars and doesn't seem to suffer from decay or necrosis even when having taken severe damage, for example, the T-800 from the main timeline only suffered a few bullet wounds, large surgical cut in the forearm and its human eye removed, whereas pops suffered far more damage and not only did "he" not rot but was able to fully regenerate the flesh on his arm after it had been completely melted away by acid. The flesh is similar to those used by the T-850, in that it comes off easily and without much blood if any. In reality this is likely because of the film's ratings.
The endoskeleton itself seems to be far more durable as well, considering that a Genisys T-800 was able to survive a shot from an underslung grenade launcher with no damage except to its skin sheath, the original version was blown apart by a home-made pipe bomb, though said bomb was actually placed into the waist of the previous T-800, which was likely a weak point. Kyle once again hits a T-800 with a metal pipe but rather than knocking the cyborg's head to the side like before, the pipe simply bends instead and is able to continue running against shotgun blasts with little to no loss of momentum unlike the original in where a shotgun blast was able to knock it back easily. The genisys T-800 seems to superior to the skynet's T-850 given that it shrugged off an electrical attack whereas the T-850 was stunned. Also the endoskeleton is able to survive attacks from a T-3000 and even stand its ground briefly against it (through magnetic gauntlets), showing more effectiveness against the advanced model than the T-850 did against a T-X.
- The new 800 series seems to have taken traits from both the T-RIP and the T-850, both from an accelerated version of the main timeline.