Red vs. Blue Wiki
Red vs. Blue Wiki

"Would you say Maine performed at his best when controlled by Sigma, when the Meta strove to be the perfect weapon?"
"You're mistaken in assuming Sigma's definition of perfection. The Meta never wanted to be a weapon. The Meta wanted to be human."
The Counselor explaining the reason behind the Meta's rampage and Sigma's goal in Counseling

Artificial Intelligence Program Sigma was developed for the Special Operations program Freelancer, originally assigned to Freelancer Agent Carolina but was given to Agent Maine in order for him to communicate. Sigma is a fragment of the Alpha A.I., specifically the Alpha's ambition and creativity, and serves as the secondary antagonist of Season 10 as well as, through his manipulation of Maine, the true main antagonist of Reconstruction and Recovery One.

Role in Plot[]

Project Freelancer[]

Sigma curious about Metastability.png

Sigma was one of many fragment constructs that were born from the degradation of the original Alpha A.I., sharding off Alpha's creativity, as explained by Freelancer Washington. He was assigned to agent Carolina during his time at Project Freelancer, but Carolina gave Sigma up to Maine, in order for Sigma to assist Maine's speech. During a Freelancer lecture class, Sigma states that he and Maine are both thankful for Carolina giving him to Maine, complimenting her skill without an A.I., as well as that of Tex. Sigma then takes great interest at the possibility of achieving the A.I. stage of "Metastability", in which an A.I. can, theoretically, be considered human. He puts together a "Meta" symbol out of a few separate A.I. symbols after the lecture ends.

Maine and Sigma.jpg

Later, Freelancers North, South, Carolina, York and Washington are sent to attack an Insurrection base. After the group is overwhelmed by the Sleeveless Insurrectionist and Female Insurrectionist's clever tactics, Washington sets out a beacon and Maine, as well as Sigma, are sent down via drop pod. Upon exit, Sigma notes the fact that those two soldiers were the ones from the freeway, who caused his injury saying. "Agent Maine, isn't that the soldier from the freeway, the one that shot you in the throat?."

Delta and Sigma.

Maine notices this with an angry growl, and Sigma sinisterly responds with "I thought so, sic 'em", sending the enraged Maine charging at the two specialists. While the brute fought the enemy, Sigma took the time to meet with his "brother" Delta, despite protocol dictating that A.I. should not come in contact with each other. However, Sigma justifies that, as the Director says, there is no protocol on the battlefield. Sigma then eerily tells Delta that they should stick together before rejoining Maine. This prompted York to comment that Sigma's behavior was creepy, a notion seconded by Wash.

Torturing the Alpha[]

Sigma informing Carolina about Omega.

Some time after the mission, Wyoming and Maine are seen loading up their weapons in a locker room, aboard the Mother of Invention. Carolina storms inside and throws her helmet at the wall in anger. Sigma appears next to her and asks her if her training was beneficial. Carolina tells him that her results were not what she wanted. Gamma appeared soon after and both A.I.'s tell Carolina of Tex's A.I. Omega, who was said to be the most powerful of the A.I.'s. Gamma then further deceives Carolina by saying Tex wasn't as a good of a Freelancer without Omega being in her head. Carolina, getting an idea, walks off in order to confront the Director and Counselor.

Director speaks with Omega, Gamma, and Sigma.png

During his conversation with Gamma and Carolina, Maine clutches his head in disorientation. Throughout a heated conversation between Carolina, the Director, the Counselor and Texas; Maine, Sigma, Gamma, and Wyoming watch in the viewing room from above, with Sigma donning a smug look on his face. He later assists the Director, along with Gamma and Omega, in the torture of Alpha in order to create a new fragment. The Director then ordered the three to log off, but unbeknownst to the Director, Sigma stored himself in a nearby security camera to witness the final part of the A.I. fragmentation.


Sigma threatens Tex.png

Afterwards, Sigma and Maine begin their rampage of A.I. units during the Freelancer break-in, led by agent Texas. After the Mother of Invention crash lands on a frozen planet, Maine, now the Meta, approaches an injured Carolina and proceeds to forcibly steal her A.I. He then throws her off a cliff, much to Tex's horror. When Tex flees the situation, Sigma muses her while she runs stating that they are the Meta and they will find her soon enough.

Delta with AIs.png

Sigma was behind the Meta's rampage of fellow Freelancers and theft of their A.I. and equipment. Sigma believed that if it brought together the A.I. fragments then he would become the Alpha. This, however, ultimately didn't happen since Sigma, along with all the other A.I. captured by the Meta were destroyed in the EMP. His intentions if he had been given the chance to become the Alpha remain unknown.[1]


Sigma talking to Carolina.png

Aside from being the creative aspect of the Alpha's personality as well as his ambition, Sigma has shown himself to be a very cunning and manipulative A.I. whose behavior has, on multiple occasions, put his fellow A.I. fragments and other Freelancers at general unease. Using his influence over agent Maine, Sigma convinced him to become the Meta as well as hunt down his fellow Freelancers and their A.I. fragments in order to recreate the Alpha. Due to the fact that this led to the deaths of numerous Project Freelancer personnel as well as the Project's subsequent shutdown, Sigma can be considered one of the primary antagonists of the Recollections and easily one of the most dangerous and heartless individuals overall.

Sigma hiding Maine.png

Even before the events of the Recollections, Sigma was shown to be a very dangerous A.I. He expressed an immense interest in achieving Metastability, in which an A.I. can theoretically be 'considered human', no doubt foreshadowing his future actions. He (along with Gamma) also convinced agent Carolina that agent Texas was not as good of a Freelancer without Omega (who he said was the most powerful of the A.I. fragments) and was responsible for the implantation of her two A.I. and mental breakdown, showing that he has no remorse for his former implantee. Although Sigma considers the other fragment A.I. as his "siblings", he used the Meta to have them join him willingly or not, showing Sigma is remorseless to even his own kind.

Sigma watches.png

While not showing outright disobedience during his time at Project Freelancer, Sigma has disregarded the protocols set for A.I. units. During the battle at the Longshore Shipyards, he freely communicated with Delta despite said protocols; later when he, Gamma and Omega were harvesting the Alpha's personality fragments, at the Director's orders, Omega and Gamma logged off without incident while Sigma stored himself in a nearby surveillance camera to secretly witness the next phase.


While a very significant character, Sigma has had little interaction with other characters of the series, due to him only having a prominent role in Season 10. Despite this, he has left a large impact on others.


As the original AI of Carolina, Sigma knew her well. He was able to (with the help of Gamma) manipulate her into demanding two A.I instead of one. After Sigma turned Maine into the Meta she became his first victim of his rampage and he nearly killed her by throwing her off a cliff.


Sigma was given to Maine in order to allow him to communicate after his throat injuries but later took advantage of him by turning him into a pawn in order to collect his fellow AIs and reach metastability. Even after Sigma's destruction, the Meta still attempted to complete Sigma's goal of collecting the AIs, due to Sigma's large and lasting influence on his mind.


Sigma could be considered as Church's enemy, as he took part in torturing Alpha and used the Meta to attack him and the other Reds and Blues.

Fellow A.I's[]

Sigma cared little for his fellow A.I fragments seeing them as only pawns to complete his goal to reform the Alpha and obtain Metastability. Though he did get along with Gamma and Omega, working with them to successfully manipulate Carolina and torture the Alpha.

Skills and Abilities[]


Sigma & the Freelancers.png

Sigma's is one of the most skilled A.I. in possession compared to his 'siblings', possibly because he was composed of two attributes instead of one. His possession greatly increases the abilities of the host and he's one of the few A.I. who can take control of them, as he was able to influence Maine into becoming the Meta. He shows he can manipulate others (such as the other A.I., the Director, and Carolina) to aid in his plans without even possessing them, using his reasoning to trick them. However, unlike the Alpha, he seems to take a longer period of time to take control of the host as Church can take control of the host within seconds.


Due to the fact he is the reason why Maine became the Meta, Sigma is partially responsible for several characters the Meta has killed, including three unnamed Freelancers, North, Recovery Six, Recovery Nine, and many simulation troopers and Freelancer soldiers.



  • Initially, Sigma was represented by the character model of the armory sergeant from Halo 2. This was, in part, due to that fact that Rooster Teeth wasn't using CGI at the time Reconstruction was being produced. Another reason was, except for Delta and Omega, the other AI were, at that time, not identified.
  • A much deeper distortion in tone can be heard echoing whenever Sigma speaks.
  • Sigma's voice actor is Elijah Wood, who is most known for his leading role as Frodo Baggins in the Lord of the Rings film franchise. 
  • Sigma is the only known fragmented A.I. to embody more than one attribute: creativity and ambition.
  • In mathematics, the capital Sigma (Σ) is used to represent the addition of elements and/or mathematical terms, similar to how Sigma attempted to combine (add) all the A.I. together, in order to achieve metastability.
  • Interestingly, Sigma tries to justify his actions like how the Director does with the Chairman. For example, when Delta says A.I. units are not to communicate with each other, Sigma replies "Remember what the director says: there are no rules on the battlefield."
  • Sigma's appearance as a flaming body could be an allusion to the phrase "burning ambition".
  • Alongside Omega, Epsilon, and Alpha, Sigma is one of three A.I.s that has an influence over his host that extends to the point of possession, evident by how Sigma influenced Maine to go on a rampage as the Meta.
  • Sigma's infamous line in Party Crasher foreshadows what becomes of Tex after the Blood Gulch Chronicles; when her ship crashes in Valhalla, the Meta finally adds her (and Omega) to his A.I. collection.
  • It's shown in Don't Say It that Sigma, along with several of his 'siblings', "lives" on as a memory in Epsilon as Epsilon takes Sigma's form briefly when facing the Director.
  • Other than Gamma, Sigma is the only AI to take on an armorless form, rather than an armored form similar to the main characters.


Artificial Intelligence
Freelancer A.I.: Α · B (ε) · Γ · Δ · Ε · Η · Θ · I · Σ · Ω · F.I.L.S.S.· V.I.C. (ε)
Other A.I.: Lopez the Heavy (ε) · Sheila · Andrew D. Kaboom (ε) · Holo-Grif · Phil (Falcon)
Lopez 2.0 · Freckles · Cyclops · Santa · Cherry · Shelly