- “The WAU is reaching out to every machine, every life form, to manipulate, to control. It's trying to help, save its creators from all this, just like the protocol demands. But, really, what is good enough?
- Where is the line drawn for what is human and what is not? Would walking corpses do? Would a group of machines thinking they're human be acceptable? We can't trust a machine to know, to understand what it means to be.”
The WAU is an AI system constructed by Carthage Industries with the intent of overseeing maintenance across all PATHOS-II facilities, with Dr. Johan Ross being its primary overseer and operator. It acts as the main antagonist of SOMA and Transmissions.
The WAU was initially developed by Carthage Industries and contained in the classified Site Alpha. Although the AI's presence on PATHOS-II was a common knowledge, only Carthage Industries employees Dr. Ross, Mark Sarang, and Julia Dahl knew of its location.
Lacking a proper definition of the human condition or an acceptable mode of human existence, the WAU uploaded brain scans of PATHOS-II employees to robots throughout the station, creating Mockingbirds. Humans infected with the Structure Gel were bio-mechanically engineered and put in trance-like comas, unaware of their surroundings and what was happening to them.
The WAU is responsible for the creation of the various enemies that Simon Jarrett faces throughout the game. It is capable of manipulating structure gel and interfering with blackboxes as well as creating life support systems for injured workers. Although Simon, Catherine and Dr. Ross have been designed or extensively modified by the WAU, it does not appear to control them in any way.
On March 7, 2102, Mark Sarang received a classified message from the supervisory board of Carthage Industries who were “very pleased to hear about your success in making the WAU a station-wide presence.” The letter insisted that Dr. Ross must be able to “steer and study” the WAU from Alpha without interference.
After the catastrophic Impact Event that wiped out all surface life, the WAU's primary protocol became preserving humanity. To achieve its goal, WAU used the structure gel to physically manifest, initially occupying a large part of its core chamber, which then reached out to machines and life forms around the PATHOS-II facilities.
Shortly after the comet's impact, the WAU modified the pilot seats around PATHOS-II, originally used to pilot working robots, in order to brain scan any user. This scan caused a spike of electromagnetism surrounding the pilot helmet which also caused symptoms such as nausea and headaches to occur in the user. These seats were later used by Catherine Chun to make brain scans for the ARK project since this method proved more effective than the conventional neurograph scanning technique.
On June 6, 2103, at Theta, Imogen Reed investigated a machine that was corrupted by the WAU, dubbed the "Vivarium". The machine proved capable of creating an artificial reality, which prompted Catherine to use it as a prototype for her ARK project.
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The WAU is responsible for the total destruction of the Lambda crew. It mortally wounded Jessica Davis and reanimated her, made Adam Golaski kill Richard Holland and later transformed him into one of its monsters, and killed and infected Martin Fisher. It later killed Dorian Cronstedt and made Fisher kill Baxter Rogers. Only Imogen Reed and Vanessa Hart came out of the incident alive.
In December 2103, Imogen Reed shut down the geothermal power generator of Upsilon in an attempt to kill the WAU, which also caused Reed's death as the ventilation-turbines shut off, killing her by asphyxiation. WAU regained power autonomously from Alpha for a limited amount of time.
Genocide at Omicron
On December 27th, 2103, Dr. Ross was found by Omicron staff, appearing to be in a coma, his body was placed in a glass containment cell. The WAU instructed the structure gel within Dr. Ross' body to repair it, seemingly through the manipulation of electromagnetic fields around. Thus causing anomalous phenomena around it, such as system failure and interference in blackboxes, resulting in Dr. Ross being reanimated.
During this time, Dr. Ross tried to contact Omicron employee Raleigh Herber to fulfill his plan to destroy the WAU's heart at Alpha. The WAU either reacted to this threat by overcharging Omicron employees' blackboxes or merely manipulating electromagnetic fields to such extent, to resurrect Dr. Ross, that they exploded thus decapitated their heads. The WAU then reanimated those who were physically capable.
The WAU never attempts to directly intervene with Simon and Catherine's plans to reach and launch the ARK, however its offshoots do. These include the Construct, the Fleshers, Robot Girl, the Universal Helpers, Jin Yoshida, and all the structure gel-infused marine wildlife inside the Abyss.
At Upsilon, Simon encounters the mockingbird of Carl Semken, stuck on a conveyor belt.
Amy Azzaro can be found fused into a stalk from the WAU, being kept alive artificially.
At Theta, the DUNBAT contains the brain scan of an unknown person. Upon realizing its state, it begins lashing out while cursing Catherine's name, ultimately causing the vessel to break from its dock and fall, destroying it. It is presumed that the WAU was the one who uploaded the brain scan into the DUNBAT.
Heart at Alpha
While Simon is travelling through Omicron, Dr. Ross attempts to contact Simon at random intervals in order to persuade him to help stop the WAU.
While Simon is travelling to Tau through the Abyss, Dr. Ross guides Simon towards Alpha, with the intent of using him to destroy the WAU once and for all. Dr. Ross reveals that the structure gel used by Simon to fix Raleigh Herber's Power Suit was actually a modified variant of the substance, created by Herber with the intent of using it to kill the WAU. This means that Simon is capable of carrying out Dr. Ross' initial plan.
Simon is lead to the center of Alpha where the WAU's heart resides. By this point, the WAU has already created a massive heart-like growth in the center of its chamber.
Dr. Ross pleads with Simon to kill the WAU. If Simon refuses, Dr. Ross will attempt to force him but fail and the WAU be left unharmed. If Simon accepts, he inserts his arm into the WAU, a rudimentary solution of injecting the modified structure gel, then Dr. Ross will attempt but fail to kill Simon to prevent the WAU from learning of his immunity to the modified structure gel.
- WAU's name is likely based on the archaic Greek letter Wau, also known as Digamma, one of three Greek letters that fell out of use, the other two being San and Koppa.
- There's also a possibility that the WAU's nomenclature is inspired by the name of the supercomputer from the film 2001: A Space Odyssey.
- ↑ There's a computer log on Upsilon, dated March 9, 2104, containing the following lines "UPSILON#61633 initiates scan of subject Simon Jarrett (Aut_DavidMunshi2015v1). Command or program ApPS is unavailable; 4416cWAUcf77 is complete". This implies that the WAU was the one who uploaded the brain scan of Simon into Imogen Reed's body.