Our Zombies Are Different: Although strictly speaking not undead per-se, the increasingly decayed and putrified form of The Terminator, not to mention it's increasingly robotic and shambling gait as it's form is punishingly pulverized by speeding vehicles clearly invokes the image of a murderous living corpse.
Note this is the only Terminator to date whose decay is portrayed as being horrific; from the T-800 Mark 2 onwards, punishment taken by the Terminator's flesh is portrayed in a heroic manner, and hence does not invoke the Zombie imagery.
Voice Changeling: One of its techniques is to record and impersonate the voice of someone it has just killed in order to lull its target into giving up its location.
Zombie Gait: As the body of The Terminator begins to take on horrendous amounts of punishment, its gait becomes increasingly stiff and stilted, more befitting of the rods-pulleys-and-levers that it really is than the human that it tries to masquerade as.
Adorkable: His every attempt at mimicing human emotions has him come across as an enthusiastic but naive Man Child; the stiff and literally parroted "I swear I won't kill anybody" scene in particular is an amusing example of this.
Anti-Hero: Being a killer machine with no emotions, only protecting and following the orders of a ten year old because of his programming would probably place him as a type V. By the end of the film he's able to understand human behaviour and emotions, so it could be argued that he becomes a more traditional hero over the course of the movie.
Genre Savvy: When John notices his foster mother is acting strangely, the T-800 asks her a trick question to confirm it's the T-1000 in disguise. And because he is also a Terminator with the same data files as the T-1000, he understands how it operates and is able to predict what it will do to get to John. He even correctly predicts that the T-1000 may anticipate Sarah and John using the T-800's files to prevent Judgement Day.
John: "I gotta stop by my house, I wanna pick up some stuff." T-800: "Negative, the T-1000 will definitely try to re-acquire you there." John: "You sure?" T-800: "I would." (He was right.)
T-800: [to John] What's the dog's name? John: Max. John!T-800: Hey Janelle, what's wrong with Wolfie? I can hear him barking. Janelle!T-1000: Wolfie's fine, honey, Wolfie's just fine. Where are you? The Terminator:(hangs up the phone) Your foster parents are dead.
Loophole Abuse: He swears not to kill anyone. Doesn't stop him shooting kneecaps and breaking bones.
Rasputinian Death: The T-1000 hits him badly, including destroying his arm, hitting his head with a steel bar, and even an impalement that deactivates the T-800. He still finds an alternate power to return and destroy the T-1000.
That's What I Would Do: He and the T-1000 were built for the same purpose allowing the T-800 to anticipate it's moves based on what terminators would do in a given scenario. He correctly predicts the T-1000 waiting for John at his foster parent's home and even that it may look for them at Dyson's home as they might try to prevent Judgement Day.
The T-800 explains that his model is switched to Read-Only mode when they're sent out on solo missions; Skynet doesn't want them to do "too much thinking." He seems to develop a grasp on human emotion once he's rebooted, mimicking smiling and an urgent tone of voice. He even seems to display some pride at locating the keys to a semi (using the sun protector trick taught to him by John).
Badass Decay:invoked Intentionally invoked by his crashing a bachelorette party while still in the buff. The song "Macho Man" blares while he reaches into his jacket pocket and dons some Elton John sunglasses, in an obvious send-up of the Terminator persona.
Balls of Steel: Of course, he's a cyborg and may not even feel anything from this attack, even if the attacker is a cyborg as well. But strangely enough, this is kinda subverted. After this attack, the female Terminator is seemingly overwhelms him even more although before that happens, she's already stronger than him because she's created with more advanced technology.
Guile Hero: He never lets on that Judgement Day can not be stopped, and allows John to believe that Skynet is located inside a remote mountain bunker. He did this so that John would be in a safe location when the bombs started dropping.
Dangerously Genre Savvy: Unlike the T-800, the T-1000 understands how to use human psychology and technology to aid its mission — it uses the police database to look up John's address, gets a picture from his parents to show to people to help find him, and when John escapes he kills his foster mother and takes her place during normal life at home in case John comes back.
Deceptively Human Robot: He can talk and behave more like a human than both versions of the T-800. If it wasn't for his Robotic Reveal when T-800 shot him, he would've continued fooling the audience into thinking he was human, let alone the hero.
Knife Nut: As said by the T-800 himself, his main weapons are to morph his limbs into knives and other stabbing weapons.
Lightning Bruiser/Glass Cannon: He's just as strong physically as the T-800 model, his liquid body allows him to form weapons for melee fighting, and he does not walk, he runs and can keep up with cars. And when it comes to destroying him, while he's not as invulnerable as the T-800, recoiling when shot and taking a few moments to recover if damaged heavily, he does recover that damage, and it takes liquid nitrogen to noticeably damage him, and then a vat of molten metal to actually kill him.
Not So Stoic: Like all Terminators, he's normally stone-faced and focused. However compared to the T-800 in the first two films, he shows subtle degrees of emotion, such as being shocked or even horrified when he gets damaged severely (being frozen or having a grenade fired into his chest), annoyed when John's foster father talks while he's on the phone with John, and taking a moment to look at a silver-skinned mannequin in what might be interest that it looks like his liquid form.
Power Incontinence: In the extended edition, after being frozen, shot, thawing, and reassembling, he begins glitching and his body parts take on the texture of whatever surface they touch. This is the first indication he isn't invulnerable.
Catchphrase: "I like your X" where X is something she's about to kill you for.
Composite Character: In terms of technology, she's a compromise between the T-800 and the T-1000 — she's liquid metal over an endoskeleton, making her more durable than the T-1000, as well as being able to carry on-board weapons, and is still able to shift her appearance to impersonate other people.
Gone Horribly Wrong: Designed to oversee an advanced military missile defense network and protect against outside enemy threats. It gained sentience and immediately saw all humans as a threat. Launching nuclear strikes to provoke a nuclear holocaust.
Master Computer: Skynet Central on the former U.S. western coast contains its main processing facilities. In the original timeline the resistance destroyed it for good in 2029 before all the time traveling shenanigans started. Subverted in Terminator 3 where it survives specifically by decentralizing itself on a global scale.
Ultimate Evil: It's actually just a floating skull, according to Robocop Versus The Terminator. Admittedly, it's pretty unnerving. Subverted in Terminator Salvation when it appears as various human faces to instruct its latest cybernetic experiment.
Default form played by: Roland Kickinger (body), Arnold Schwarzenegger (face)
All Girls Want Bad Boys: In the first film she was guilty of that, she dated a guy that treated her like dirt before she met Kyle. It was clear that despite Reese's attitude toward her was unnerving to her, but she liked him. As proven with the scene when she tried tip toeing around the question of whether or not he had a girlfriend, seconds before his Anguished Declaration of Love. Lastly in 2 she started going out with military personal, mostly to learn things she can teach John, but given her history....
Gold Digger: In the second film... sort-of. John says Sarah would "shack up with" any guy who looked like he had something worthwhile to teach John so that he'd grow up to be the competent leader she knew he was destined to be. It's a nobler example than most, but hey, using people is still using people.
Making Use of the Twin: Linda Hamilton's real-life twin sister, Leslie Hamilton Gearren, in Terminator 2. Leslie is seen as both the fake Sarah inside the steel mill and as the waitress Sarah in the nuclear nightmare scene. She is also seen inside the garage operating on the fake Arnold's head (the "reflection" is Linda and the actual Arnold on the other side of the mirror frame) in the Special Edition.
My God, What Have I Done?: Silently after the attempted hit on Dyson. Exacerbated by the fact that not only had she taken on a dimmer view on human life than the Terminator she was traveling with, but had adopted the MO of the Terminator that first tried to kill her, right down to its weapon of choice (.45 Longslide with laser sighting).
Not to mention partially the fact that she almost killed a father in front of his wife and kid. Something that hits her close to home after losing Reese and almost losing John. Also when her best friend/roommate Ginger and her boyfriend were killed by the Terminator in their apartment in the first film.
Ungrateful Bitch: Instead of hugging her own son and thanking him, she just checked if John was hurt and scolds him for trying to rescue her.
Sarah: You cannot risk yourself, even for me. You're too important! Do you understand? (John begins to cry. Sarah shakes her head in disappointment.) John: I had to get you out of that place. I'm sorry! Sarah: I don't need your help. I can take care of myself.
Infant John Connor played by: Dalton Abbot (1991)
Young John Connor played by: Edward Furlong (1991)
Adult John Connor played by: Michael Edwards (1991), Nick Stahl (2003), Christian Bale (2009)
Big Good: He is fated to be one of these, and in Terminator Salvation he consequently is.
Nice Job Fixing It, Villain: John owes his existence to the fact Skynet sent a machine back in time to destroy him. There is a strong implication every time the machines fail to kill him in the past he emerges better prepared for the future war. For example: he knows about advanced Terminator models, their tactics and their weaknesses before they even exist.
Drives Like Crazy: Without a doubt. Justified in that he learnt to drive After the End. He also instinctively drives cars at night without the headlights on, as doing so in the future would draw Aerial Hunter-Killers.
For Want of a Nail: John concludes that if not for the events of the second film Kate would have likely become John's long-term girlfriend after a make-out session in a highschool friends basement. In meeting Kate's father Robert Brewster, John would have gained the necessary military skills and knowledge to later defeat SkyNet in the war (or even prevent Judgment Day). Instead John's foster parents were killed by the T-1000 not long after meeting Kate and he'd spent his life running ever since. Of course, the skeptical Kate initially think it was just a coincidence.
Stuffed into the Fridge: To anyone remotely genre savvy, her fiancee Scott Mason is doomed the moment Kate meets John. Sure enough the T-X murders him and poses in Scott's place to try and kill Kate. Kate briefly blamed herself until John tells her it's not her fault.
Agent Scully: Throughout the first and second. Subverted by T3 as it's strongly implied he is unable to shake off what saw during the events of T2, despite his best efforts, and is noticeably still shaken by the implications.
Believing Their Own Lies / Double Think: He's obviously tried to rationalize away what he saw at his hospital but it clearly still haunts him. Even as he attempts to comfort Kate Brewster with the lies he told himself he clearly doesn't quite believe what he's saying.
Dr. Jerk: Highlighted in his nonchalant behavior towards a clearly distraught Sarah in the first film. The second film does not alter this assessment.
Heroic BSOD: Whilst "hero" is a stretch, Silberman does believe what he is doing is for Sarah's own good which makes seeing the T-800 and T-1000 in action all the more horrifying.
Go Mad from the Revelation: In Terminator 3 he not too subtlety implies it took him years to get over seeing two terminators in action. The revelation that terminators existed and that Sarah was not lying would be particularly horrifying for Silberman given she discussed Judgement Day in great detail.
Unwitting Instigator of Doom: Miles wanted to make life a little better for humanity. Turns out his invention leads to the demise of billions.
Wide-Eyed Idealist: He's a far cry from the person you'd think would create SkyNet. Indeed he sees only the possible positives of his creation. This may even blind him to the military applications of his invention or to the dangers of removing humans from certain decisions.
Reasonable Authority Figure: While the others are making fun of Reese, he's quite frightened by the possibility that Reese may not be lying or crazy. He even comes to believe Reese in a deleted scene when he's dying, telling him to protect Sarah.