|“Estás usando este software de traducción de forma incorrecta. Por favor, consulta el manual. - Wheatley”
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コア（別称スフィア、人格コア/スフィア、アパチャー・サイエンス人工人格装置とも）は人工知能を搭載させる為に開発された装置で、それ自身が感情表現をするのが特徴です。コアは基本的に球状装置、入力装置の２種類に分けられます。球状コアは標準型であり、人格コア単体や Atlas 等のロボットの本体として使用されます。それに対し入力型コアは楕円形状でタレットや P-Body などの本体に使用されます。アパチャー・サイエンス社のコンピューター支援型改良センター内において、手足のない球状コアは基本的に管理レールに取り付けられています。
Portal のイベント後、研究施設の悪化を防ぐ為に、保管されていた未使用（機能停止）のコアが自動的に再稼働させられていることが判明しました。 切羽詰まった状況下ではこのコアを補正することができず、失敗に終わっています。コアによっては故障するものも存在します。原因は不明ですが、GLaDOSのように実在の人格をベースにしたコアがあったとするならば、AIに侵されて正気を失った人格が破損を引き起こした為と推測できます。
その名前の通り、どのコアもそれぞれに個性と習性があり、中枢コアに物理的に接続することでそれを組み込むことができます。ほとんどのコアは機能停止されており使われていません。後にこれらのコアは Portal にてGLaDOSを破壊した後に再稼働されます。
人格コアは基本的に、直径約１フィート（約30㎝）の眼球に似た球体の装置で、センサー（”目”はおそらくカメラ）、ハンドル2本（おそらく手動で運搬・処理する必要があった頃の名残）、その他の部品（安全レールに取り付けて移動する為および中枢コンピュータとやり取りする為の連結部分）を搭載しています。Portal 2 に登場するコアには瞼があります。
Portal 2 のイベントを通して、どの人格コアもメインフレームに接続して中枢コアになれる資格を持っていることが明らかにされます。これは破損した中枢AIを交換する手段として、アパチャーサイエンス社があらかじめ搭載した機能であり、中枢コアが弾劾を拒否した場合、こう着状態解除要員が強制的に交換を行う必要があります。
GLaDOSは中枢コアになるべく設計されたコアの為、長方形の白い”胴体”、黒い”顔”、黄色の”目”といった、他の人格コアとはだいぶ異なる特徴的な外見を持っています。Portal 2 のイベントでGLaDOSがジャガイモに組み込まれてしまった際に、彼女の黄色い”目”は彼女自身のアイデンティティであることが分かります。
GLaDOSが道徳心を失い、再び部屋に神経毒を噴出し始めてしまった原因となるこのコアこそが、チェルが一番最初に回収し、焼却したコアなのです。他のコアと異なり、そしてチェルと同じように、道徳コアが何か喋ることはありません。このコアの処分は Portal 終盤のGLaDOSの、生命に対するあまりにも無関心でないがしろな態度に反映されており、Portal 2 においても頻繁に見られます。GLaDOSが自身のGenetic Lifeform component（遺伝子型生命体コンポーネント/キャロライン）を再発見した際に再びこの態度を見せるため、どのくらいコアの制御下にあったかは明らかにされていません。
GLaDOSに装着されているコアのうち３個目がこの情報コアです（字幕では"crazy core"（狂ったコア）と表記されています）。青色の"目"と大きめの瞳孔を持ち、目の周りには６つの点があります。このコアが喋り続けるケーキのレシピはかなりヘンテコですが、このレシピは Portal のエンディング直前に映し出されるケーキのレシピなのです。Portal 2 でGLaDOSがケーキについて言及しなかったのは、Portal でこのコアが破壊された為と言えるでしょう。
GLaDOSに装着されているコアのうち最後のコアがこの怒りコアです（"emotion core"（情緒コア）、"aggressive core"（攻撃的コア）とも呼ばれます）。赤色の"目"を持ち、目の周りには８つの点があります。このコアは喋りはせず、チェルに向かって激しく唸ったり歯ぎしりします（唸り声はValveのゲーム Left 4 Dead にて感染者のボイスとして使い回されています）。チェルが怒りコアを焼却炉に落とすとGLaDOSが崩壊し始めます。Portal 2 のGLaDOSはこのコアを失っているため喋り方がまろやかになり、ほとんど敵意を見せなくなっています（ゲーム序盤では自分を倒したチェルに憤慨しており辛辣に罵ってきますが）。
The final antagonist of the single-player campaign in Portal 2, Wheatley, also known as the Intelligence Dampening Sphere, is portrayed as bumbling, chatty, desperate when things did not catch up to his expectations, and often hesitant. He is the first character to have interacted with Chell in the game, and is one of many cores seen awakening at the end of Portal.
It was not long before it was revealed by GLaDOS that Wheatley was originally designed by the Aperture Science technicians with the express purpose of rendering GLaDOS less dangerous during her initial activation, via attaching Wheatley onto her to generate an infinite stream of flawed suggestions to distract her.
It was thought that this would prevent her from killing the scientists when activated and improve the operations of the facility. According to GLaDOS, Wheatley is "the product of the greatest minds of a generation working together with the express purpose of building the dumbest moron who ever lived".
Due to technical difficulties over time, a core may be detected as a corrupted core and would be subject to disposal. However, if the corrupted core is the central core, a substitute core must be present in a core receptacle in order to initiate a core transfer. Central core corruption will not be detected if another core is not present. This is because other cores would not usually be present, except for core transfer. Once a substitute core is found, both cores must agree or disagree on the core transfer procedure. If one agrees while the other disagrees, the transfer process cannot occur unless a Stalemate Resolution Associate is present in order to press the stalemate resolution button, which will initiate the core transfer process once the Associate has returned to the Central Chamber.
During the fight against Wheatley in Portal 2, GLaDOS/PotatOS summons three corrupted cores to Chell for her to attach to Wheatley in order to make him corrupt enough to initiate another core transfer procedure.
All three Corrupted Cores are voiced by Nolan North. Each of their corruption levels is 25%, as indicated according to the Announcer when they are attached to Wheatley. And because the corruption level was already at 25% when the final fight with Wheatley started, it may be surmised that Wheatley himself is also a Corrupted Core.
GLaDOS was 80% corrupt when she was replaced in the game by Wheatley. Due to her behavior change after being put in the potato and then "reinstalled" at the end of Portal 2, it may be surmised that this reduced her own corruption to 0%. This change in GLaDOS (as well as Wheatley's behavior) further indicates that when a core is corrupt, it becomes irrational, in other words, "crazy" or "insane" by human standards, and even paranoid and homicidal.
The Space Sphere is one of three active, corrupted cores.(referred to as core 1 in subtitles) It speaks rapidly and possesses an unhealthy obsession with space. Its key personality trait is its often-repeated desire to travel to outer space. It finally gets to live its dream of going to space when it is sucked through the portal that connects the remaining blob of conversion gel to the surface of the moon. The Final Hours of Portal 2 reveals Valve's inspiration for the Space Core: an Oregon Coast Aquarium ad with a goldfish rapidly and repeatedly humming, blurting, and stating that he would like to go to the aquarium, much like the Space Core does. The Space Sphere is stuck in space, and is later known for getting bored of space and wanting to back home.
The second corrupted core, the Adventure Sphere (or as he calls himself, Rick) speaks like a stereotypical tough guy. Upon seeing Chell, he starts to swoon over her. He even tries (unsuccessfully) to convince Chell to take a "lady break" while he deals with Wheatley. He is the first core to be sucked into space as after shooting a portal on the moon if one looks closely, they can see Rick fly off of Wheatley and into space.
The Fact Sphere is the third corrupted core.(Referred to as core 3 in subtitles.)It constantly states several random, twisted, and not entirely true "facts" related to history, the current situation, as well as subjective facts about how amazing and handsome it is. The Fact Sphere is the only core that managed to stay attached to Wheatley during the ending cutscene where Chell shoots a portal on the moon but is unseen.
The following expresses cores that serve a different purpose altogether: cores that are neither corrupted nor are personality cores.
During the events of Portal, GLaDOS refers to the Party Associate after failing her attempt to kill Chell at the end of the final test chamber. As Chell did not follow GLaDOS' instructions to "place the device on the ground, then lie on [her] stomach with [her] arms at [her] sides" which was described as the "party escort submission position", it is presumed that the Party Escort Bot was required to travel to the surface in order to retrieve her and "escort her to the party".
Prior to the March 3, 2010 patch, Portal ended with Chell slowly regaining consciousness on the parking lot above the Aperture Science Enrichment Center. Since the patch was added to bridge the gap between Portal and Portal 2, Chell is instead slowly and unwillingly dragged back towards the facility by the unseen Party Escort Bot as it gives thanks to her for "assuming the party escort submission position".
The Party Escort Bot is seen briefly in the Portal 2: Lab Rat comic and was only partially depicted, revealed to be a spherical core-based android with a pink eye and a set of arms.
SteamVR / The Lab
Virtual Reality Assistance and Education Core
The Virtual Reality Assistance and Education Core is introduced in the SteamVR tech demo and guides the player through the virtual reality tutorial. It is very polite and is able to float without any obvious means of propulsion; shortly after finishing its instruction of the player, its battery dies and is immediately picked up by two Bendies driving a golf cart.
The Lab introduced several new personality constructs sent to the player for calibration, voiced by Laura Bailey, Steve Blum, Phil LaMarr, Nolan North, Justin Roiland, Pendleton Ward, and Wally Wingert. They are:
- Auction Core
- Big News Core (that ran to get here)
- Boring Hard-Boiled Core (Wilson)
- Butter Core
- By-The-Book Core
- Calibration Core
- Climate Change Awareness Core
- Comfortable Core (that just feels right)
- Convict Core
- Emergency Preparedness Core
- Executive Core
- Fruit Punch Core
- Heavy Core
- Horror Story Core
- Investigation Core
- Magic Core
- Mourning Core
- Pilot Core
- Plague Core
- Respect Core
- Retirement Core
- Reverse Psychology Core
- Rhythm Core
- Rookie Core (Kelv)
- Salesman Core (Trevor, from the Work From Home Core Group)
- Skeptical / Nervous Core
- Snuggle Core
- Soup Core
- Spider Core
- Supervillain Core
- Tracer Core
- Useful Core (that is not a Gateway to Hell)
These cores use a model similar to the original Portal's with no exposed sides (except for one in the back) and a simple design, but with a thicker outline, more detailed eye and multiple different patterns, as well as a crash test logo on the side. The internal mechanism is the main difference, consisting of a sphere with circles of light moving based on how the core speaks.
Cores act as collectibles in this game, requiring certain characters to do tasks to find them.
An "Amorality Sphere" is featured in this game which carries out functions completely opposite to the Morality Sphere, which also allows GLaDOS to employ dangerous tools (such as electricity) on Batman, Wyldstyle, and Gandalf. It makes its appearance in "The End is Tri," where it is taken from GLaDOS and replaced with an actual Morality Sphere to blackmail her to help the heroes during the final battle. It appears later from a portal that appears after GLaDOS sings, which she is glad to see.
Another core found in Old Aperture claims to be Cave Johnson and pleads for help. Once the player does though, Cave accuses them of "slacking off". The core's eye is also square-shaped compared to other core eyes.
- The bomb model used in Portal 2 is named 'personality_sphere_angry' within the game files, suggesting the Anger core was to make an appearance in the sequel.
- The bomb model also possesses similar textures and various typical personality core animations that can be viewed in the Model Viewer in the Authoring Tools. These include a stationary animation, a test animation where the core aimlessly looks around, and an angry animation where it twitches violently.
- In early screenshots released prior to the Portal 2 E3 teaser trailer, the texture of personality cores were yet to receive detailing and minor scratches, as the textures of the plating were matte white. Since then the textures have been greatly improved, and compared to Portal, the Cores from then to the retail version have a wider range of emotions.
- Poker Night 2 features a bounty price by GLaDOS called the "Paranoia Core," who behaves similarly to the Fact Sphere describing numerous events as well as being paranoid.
- Where the corrupt cores are first encountered in Portal 2, another core is being held above to illuminate them, moving weakly which confirms it is active. This core never makes another appearance and has no lines. Upon closer inspection inside reveals that it is an Adventure Sphere reskin, with the eye aperture constricted.
- Personality cores that serve basic tasks are surprisingly nice and polite, including Template:Sentry Turrets, the Oracle Turret, and Template:Frankenturret, proved by their voice lines, proof being that one of them refers to Chell as "lady".
- But free-thinking cores (such as Wheatley, Adventure Core) do not.
- The morality core has one dot on each side, and it's the first core to be detached and incinerated. The curiosity core has two dots (although on only one side), and it's the second core to be detached. The intelligence core has three dots on each side, and the anger core has four.