Geth

The geth are a race of networked artificial intelligences that reside beyond the Perseus Veil. The geth were created sometime around 1900 CE by the quarians, as laborers and tools of war. When the geth became sentient and began to question their masters, the quarians attempted to exterminate them. The geth won the resulting war, and reduced the quarians to a race of nomads.

The history of the geth's creation and evolution serves as a warning to the rest of the galaxy of the potential dangers of artificial intelligence and to the legally enforced, systematic repression of artificial intelligences throughout galactic society.

History
The quarians created the geth as a cheap labor force, limiting their intelligence to keep it as low as any VI. However, they made small modifications to their programming as time passed, enabling the geth to do more difficult tasks and work more efficiently. Due to the way the geth neural network functions, the more geth the quarians built, the smarter they became. Soon, the geth became intelligent enough that one questioned its master as to whether it was really alive, and what its purpose was.

Alarmed that their creations were achieving sentience, the quarian government sent out an immediate order to shut down all geth. Their synthetic servants struck back, killing billions and driving the quarians from their homeworld in what few ships they had left. After forcing the quarians into exile, the geth isolated themselves from the rest of the galaxy in the systems beyond the Perseus Veil. The Citadel races immediately sent ships to the edges of the Veil, expecting a geth invasion would soon emerge. However, the geth made no attempt to attack and have not been seen outside the Veil for centuries. Their activities in the space beyond are a mystery.

Subtypes


Over time, the geth have evolved into numerous sub-forms -- from the diminutive but highly agile Geth Hoppers, to the gigantic, lumbering Geth Armatures. The geth also utilize turrets and drones (rocket, assault, recon and repair drones specifically). It isn't clear whether these are also AIs - in the same way Geth Armatures are not just tanks but sentient machines capable of learning and problem solving - or simply controlled by the geth.

It should be stressed, however, that in all forms the geth are to be approached with extreme caution as they are universally violent.


 * Geth Armature
 * Geth Dropship
 * Geth Hopper
 * Geth Trooper
 * Geth Destroyer
 * Geth Rocket Trooper
 * Geth Shock Trooper
 * Geth Sniper
 * Geth Juggernaut
 * Geth Prime
 * Geth Colossus

Characteristics
Physically the humanoid geth resemble quarians - their hands, head shape and legs are similar - which is probably a holdover from their origins. They are described as having 'flashlight heads'. Geth are built of two materials, a large plastic or steel outer shell, and a kind of synthetic muscle tissue that gives Geth Hoppers their incredible agility. It is actually possible for this synthetic muscle to be grafted to organic tissue (Saren Arterius has a grafted geth arm). Geth 'bleed' a white conductive fluid when shot, but they don't have any internal organs or nervous system, so the geth don't feel hunger or pain. The geth are also seen using omni-tools, and have seemingly modified them to heal synthetic wounds.

Part of the geths success is due to their neural network. Effectively, they 'share' their processing power, distributing low-level processes like motor control and visual identification to free up bandwidth for higher reasoning and complex thought. Geth can't share sensory data - they aren't a hive mind like the rachni - but in large groups they have more to think with. An individual geth has only a basic intelligence on par with animal instincts, but in groups they can reason, analyze situations, and use tactics as well as any of the organic races. An exception would appear to be Legion, a geth specifically designed to operate as an autonomous sentient unit outside the Veil.

According to Legion, each geth is made up of hundreds of programs equivalent to VIs, all operating in parallel with one another to form a kind of emergent intelligence described by EDI as "hundreds of voices talking at once". An individual geth is thus more of a "mobile platform" than an actual body; the programs that make up its consciousness are constantly being transeferred and downloaded; the mind operating one of these "mobile platforms" might just as easily inhabit a starship body should it need to.

As all geth are networked to each other, they may communicate their exact thoughts and ideas at the speed of light. They find organic methods of communication, such as body language and spoken word, to be largely inefficient; the geth are able to communicate their thoughts flawlessly without any fear of misinterpretation. Because of this they have no true form of government and no system of rank. When a matter must be decided upon, the geth communicate all viewpoints of a situation and a consensus is made, the decision being whatever benefits the geth as a whole the greatest.

Combat
The key element of geth warfare is surprise. Their sudden and unexpected return from beyond the Veil after three centuries was typical. Shepard describes the geth as perfect ambushers - "they don't move, they don't make noise, they don't even breathe." Their freedom from the need to eat or sleep allows the geth to leave dormant garrison units in ambush at key positions, and the fact they don't feel pain allows them to literally drop units from overhead out of nowhere. Geth can even be packed tightly into crates and left in storage, shutting down their power sources to stay undetected. A tactic particularly favoured by the geth is to set 'distress signals' and then ambush the rescuers; they also turned the freighter MSV Cornucopia into a drifting trap.

The geth use psychological warfare in the battlefield with 'dragon's teeth'. These implements pierce the bodies of dead soldiers, turning muscle tissue into synthetic material, creating a zombie-like monster called a Husk. This severely lowers morale, as their enemy now has to kill fallen comrades.

When geth shut down, they fry their memory cores as a defensive measure, which is probably why geth haven't been successfully captured for study. However, Tali'Zorah nar Rayya was able to retrieve some of the data cache from a deactivated geth, using her quarian tech expertise and quick decisiveness.

Geth weapons and armor are of extremely high quality but difficult to find - a Geth Armory licence allows Shepard to buy them. Their weapons are pulse based. These weapons are among the most powerful in the game and ideal for Shepard´s team.

Behaviour
The geth are reclusive and secretive. This is partly due to their synthetic nature. They have no need to interact with other races because they do not share the same goals, needs or instincts as organic species; they are not driven by the need for food or the drive to reproduce. Comfort is not a concern for them, as geth ships lack gravity, atmosphere or climate control.

The only geth who have interacted significantly with organics are a group Legion refers to as Heretics, a minority who worship a hyper-advanced but long-vanished machine race called the Reapers, which they see as the pinnacle of non-organic evolution. It is these geth who made their attack on Eden Prime and the Citadel. This group is estimated to consist of about five percent of the total geth population. According to the first "true geth" encountered in years, Legion, the geth are content to stay separate from the remainder of citadel space to "build their own future." This may prove the geth to be less hostile than it was initially believed.

Mass Effect
Using Sovereign's influence over them, the rogue Spectre Saren Arterius commanded an army of geth in an effort to take over the Citadel and release the Reapers from dark space. The geth formed the bulk of Saren's forces, following him because they believed he had the means to find the Conduit and bring back their 'gods'. In addition to providing ground troops, the geth also crewed (or tended to) Sovereign.

However, the geth did not realise Sovereign was actually insulted by their 'pitiful devotions' and saw them merely as tools. After the Protheans broke Sovereign's hold over the keepers, and the keepers evolved so that they only accepted commands from the Citadel, the Reaper realised organic races were difficult to control. It found the geth to be suitable replacements as servants, and exploited their religious beliefs. Saren claimed that, although they were viewed disparagingly by Sovereign, the geth were valuable as tools, and would therefore survive the Reaper invasion because they were useful. The example of the geth inspired Saren to prove organic races could also be useful to the Reapers. He hoped that, instead of harvesting them, the Reapers would spare the organic races of the galaxy, even if that meant they would only survive as slaves.

Saren's plans were foiled by Commander Shepard and the crew of the Normandy, and Sovereign was destroyed in the battle over the Citadel. The remaining geth that were not destroyed in the assault on the Citadel continued to put up resistance and were systematically hunted down by an emergency Citadel coalition force, headed by the Alliance.

Mass Effect 2
Geth reappear as enemies in Mass Effect 2, despite their defeat at the end of Mass Effect. Shepard must find out the reason behind their suspicious reappearance. The geth will display several new technologies, such as personal cloaking devices, plasma throwers, and heat-seeking missiles. Specialized geth combat drones will also be seen.

A "naturally-evolved" geth named Legion, the same seen in the first teaser trailer, will stalk Shepard and his squad during the events of the game. Legion harbors a strange obsession with the Commander, to the extent of having a portion of Shepard's armor incorporated into its own. It can function independently of the geth neural network, showing the ability to talk and think for itself.

It has also been revealed that there is at least one faction of geth operating independently of the rest, who are stated to have "different beliefs". Legion is part of this faction; they refer to the Reapers as "Old Machines" and do not worship them as other geth do. Legion explains that "his" geth have no hostility towards Commander Shepard. While the geth that serve the Reapers want the Reapers to show the geth the future, Legion and like-minded geth want to make their own future. Legion is actually aligned with the majority of geth beliefs, as the ones who follow the reapers are described as heretics.

Legion also tells Shepard a great deal about geth psychology and society. Geth lifestyle is completely alien to organics. They do not value individuality, preferring to share all memories and thoughts of all programs regularly. This means geth cannot and do not wish to hide their thoughts, even those that do not follow the norm, with their reasoning for such though being apparent. More importantly though, deceit, manipulation and lying are impossible in geth culture, where no concept of vulnerability or privacy exist and geth are completely honest with each other about their thoughts and their reasons for those thoughts. This means there is a great deal of compassion and understanding amongst geth, with every geth being a combination of every other geth. They do not have a government, instead geth use FTL communications to "build a consensus", a completely democratic of every geth program making their choice on any matter.

This system has yielded peace for so long that Legion grew quite alarmed when the "heretics" grew violent and deceitful against the "true geth".

The long-term goal of the geth is the construction of a "mega-structure", a massive mainframe capable of housing every geth program in existence simultaneously, and thus, achieving the peak of their processing capacity. It's believed that the Heretics have been promised a Reaper body to serve as a mega-structure by Sovereign.