Jaffa First Primes
- Asskicking Equals Authority: Every Jaffa warrior is a badass fighter in his own right, so it stands to reason that a Goa'uld would choose the best and most badass to lead the troops.
- The Dragon: Every First Prime serves this role by being his master's most trusted warrior and the leader of his master's armed forces.
- Government Drug Enforcement: Being Jaffa, they are genetically engineered to rely on a larval Goa'uld symbiote as an immune system.
- Fantastic Rank System: The rank of First Prime is comparable to a Real Life Chief Master Sergeant (on the assumption that only the Goa'ulds are commissioned officer equivalents).
- Proud Warrior Race Guy: In a First Prime's eyes, serving your god as a warrior is the most honorable thing a Jaffa can do.
- Really 700 Years Old: While their ages are not given, they possess the same potential lifespan as other Jaffa, which is much longer than that of a human. Though they often don't actually live that long because, being warriors willing to sacrifice themselves for their "gods", First Primes are often killed in battle.
- Slave Brand: When a Jaffa becomes a First Prime, the flesh of his forehead symbol is cut away, leaving a hole of the same shape into which melted gold is poured (a process Teal'c describes as tremendously painful), to indicate that he is First Prime.
A Jaffa who, in his first appearance, was the First Prime of Anubis' underlord Khonsu. He killed Khonsu after learning he was an undercover Tok'ra. Her'ak then reappeared as Anubis' First Prime and served that role for more than a year before being killed when the Tau'ri destroyed Anubis' fleet.
- Agony Beam: Tortures O'Neill with the Goa'uld cattle prod in his first appearance.
- Call-Back: After learning of his promotion, O'Neill makes a comment about "failing upwards". He said the same thing after upon finding out that Colonel Kennedy had been promoted and replaced by Maybourne all the way back in season one's "Enigma".
- The Coup: Overthrows Khonsu after finding out that he's actually a Tok'ra and declares himself in charge until Anubis returns.
- Killed Offscreen: He was on Anubis' ship when it was destroyed in the seventh season finale.
- Make an Example of Them: Informs the team that they will be publicly executed to demonstrate to the Kelownans the consequences of defying their "god".O'Neill: Does it have to be publicly?Her'ak: (arms his staff weapon inches from O'Neill's face) I could kill you now.O'Neill: ...Publicly's fine.
- Rank Up: By the time he reappears in "Full Circle", he has been promoted to Anubis's First Prime.
Lord Yu's First Prime. When he first appears, his master is falling into Sanity Slippage due to old age, so he takes up the task of essentially keeping Yu's empire running himself, knowing that Yu can no longer be relied on to do what he is supposed to. Eventually, he realizes that the Jaffa's beliefs about the Goa'uld may be wrong, but he remains in his master's services out of Undying Loyalty until both are killed by Replicator Carter.
- Beethoven Was an Alien Spy: According to the RPG and the EU novel Four Dragons, he is the last of a line of clones of Sun Tzu, who was a member of Yu's royal guard.
- Dragon-in-Chief: Due to his master's mind failing, he ended up basically running Yu's domain for him. Unlike most examples, he stayed loyal to his master right up to the part where Replicator Carter killed them both.
- Enemy Mine: Cooperates with Teal'c to work out another arrangement to deal with Anubis, and the two convince Ba'al to lend support by pointing out that it's in his best interests to get rid of Anubis.
- Hypercompetent Sidekick: Ultimately serves this role to Yu, due to him going senile, hence why he appears alongside his master more often than most First Primes.
- Killed Offscreen: Replicator Carter killed him along with everyone on the ship he was on, though only Yu's death was actually shown.
- Only Sane Man: He is the one First Prime willing to accept the truth once he has a reason to. More than anything, he is concerned with staying loyal to his master and keeping things running smoothly.
- Undying Loyalty: Despite the fact that he acknowledges Yu's failing health and even drops hints to Teal'c that he's aware Yu isn't really a god, Oshu refuses to betray his master as he's spent his entire life in service to Yu's cause.
The Rogue NID, The Trust and Affiliates
- Corrupt Corporate Executive: The Trust is made up of super-rich businessmen looking to exploit alien technology for financial gain.
- Does This Remind You of Anything?:
- The NID is basically a fictional version of the CIA.
- The Trust seems to be an oblique reference to the military-industrial complex.
- Evil vs. Evil: Besides having their own misguided way to fight the Goa'uld, at one point they tried to assassinate Senator Kinsey.
- Laser-Guided Karma: After their operatives' gas attacks on the Goa'uld using the Earth gate were shut down by SG-1 they were forced to head out into the galaxy to find another gate to continue with. They ended up captured by Ba'al, who had them infested and, following his defeat in "Reckoning," eventually took over the Trust.
- The Man Behind the Man: The Committee was the founding group of the rogue NID agents, whom they secretly control. General Hammond describes them as the business and political leaders who thought the SGC should be more aggressive in pursuing alien technology, as early as the pilot of the series. After the Committee are captured and locked away in the basement of Area 51 (since their crimes are too sensitive to give them public trials), their senior NID operatives take over and rename themselves the Trust. As of the last two seasons, the Trust themselves are also secretly controlled by the Goa'uld.
- The Men in Black: The NID, who almost always wear black suits and initially operate out of Area 51.
- Nebulous Evil Organization: It's clear that they want control of the Stargate, but exactly what they want it for tends to vary from episode to episode, with motives ranging from "protect the Earth at all costs" to the slightly less noble "exploit alien technology for a profit". This might be Justified, however, given their leadership changes. At first, they're a collection of Air Force officers and NID agents who want to protect the planet from the Goa'uld and think the SGC is too soft. Then, the Committee takes over, and want to make money. The Trust that rises to replace the Committee is more assertive and starts launching chemical warheads at Jaffa camps to thin the ranks of the Goa'uld armies, and the final, Ba'al-controlled Trust wants to soften Earth and the Tok'ra up for conquest.
- No Such Agency: The NID is a shadowy government agency that exists to oversee classified military projects. In fact, the original concept was for it be the NRD, standing for No Real Department. But that sounded too awkward and was changed.
- Renegade Splinter Faction: The rogue NID are an offshoot of the main NID, which is at least theoretically a legitimate operation.
- Straw Civilian: They're the main Earth-based villain for the series' entire run, and their stated purpose is to provide a civilian oversight to the SGC.
- Well-Intentioned Extremist: Though the Trust was motivated mainly by greed, they also genuinely thought the SGC wasn't living up to its mandate to advance Earth's interests in the galactic arena. Unfortunately their approach had a way of pissing off Earth's allies: instead of trying to trade or borrow tech (and frequently butting up against politics and alien non-interference clauses), their operatives simply stole the tech and damn the consequences for Earth. In season 3 this nearly resulted in the Tollans, Tok'ra, and Asgard breaking off diplomatic relations. In season 8 they branched out into stealing the freaking Stargate and using it to launch chemical attacks indiscriminately against ostensibly Goa'uld worlds. Since they didn't exactly check beforehand to see who was actually in control there, this resulted in the deaths of millions of rebel Jaffa and at least one Tok'ra.
The initial ringleader of the rogue NID operation. Eventually SG-1 finds evidence incriminating him for treason; he defects to the Russians and helps them set up their own abortive Stargate Program. SG-1 captures him, then breaks him back out when they need help against the NID; he goes on the lam. After helping out the SGC repeatedly against its earthly enemies, they eventually move him off-world for his own protection.
- Bad Guys Do the Dirty Work: A good part of the reason he's so useful to O'Neill and the team is that as a convicted traitor, he doesn't have a lot left to lose and is willing to go to lengths that others aren't, while his connections make him privy to a lot of information that the team wouldn't otherwise have access to.
- Beard of Evil: Inverted. He grows a beard while he's on the lam in the United States, but by the time we see it he's well into his HeelFace Turn.
- Becoming the Mask: Despite conning a primitive planet into making him their King, he later realises that he's genuinely come to care for the people he rules over and selflessly set about establishing a fair legal system and introducing technology to help their society, making him the wise and beloved leader they all thought he was. He's as shocked as everyone else.
- Crouching Moron, Hidden Badass: Most of the time Maybourne's little more than an Obstructive Bureaucrat. However, when he's placed into a situation that calls for black ops work he proves to be fairly capable. He personally leads the special forces team to retake Stargate Command in "Foothold". It's implied that he's mostly out of his league when it comes to offworld threats, but he's on-par with Jack O'Neill when it comes to normal black ops work against the rogue NID.
- A Day in the Limelight: "Paradise Lost", which involves him going steadily insane after stranding himself and O'Neill on a supposed "paradise planet".
- Deadly Euphemism: He's quite fond of doing this, something that O'Neill frequently lampshades.
- Easily Forgiven: In later seasons when the team seem willing to overlook some of his shadier past actions, including the time he was willing to let Teal'c mutate into a swarm of alien bugs "for research".
- Emperor Scientist: The real secret behind the "prophecies" that led to him becoming king is that he was able to read an Ancient column made by a time traveler that documented future history of the planet. In addition, he also uses his modern knowledge to introduce new technology to the primitive inhabitants of the planet.
- Even Evil Has Standards: He's genuinely sorry when he learns that he was inadvertently involved in a plan to kidnap and perform medical experiments upon Carter, and helps the team get her back. He also loathes Simmons
- Friendly Enemy: He eventually becomes this to O'Neill and to a lesser extent the rest of the team.
- Going Native: After getting himself marooned on a low-tech planet and getting crowned king.
- The Good King: Though he gains the position through lies and deceit, he eventually shapes into this when he becomes king of a relatively primitive planet.
- Harmless Freezing: In "Watergate", he walks into a freezer to stop a water-based alien taking control of his body. The alien in turn put him into a former of stasis, preventing him from dying.
- HeelFace Turn: After becoming a wanted man, he helps out O'Neill and is eventually smuggled off-world by the SGC.
- Hidden Depths: After manipulating his way to the top of a primitive culture, he discovered he was actually a pretty capable ruler.
- I Choose to Stay: O'Neill offers him a chance to return to Earth at the end of his final episode, but he decides to remain on his planet as he's found that he likes being king and that he's come to care for his "subjects".
- Karma Houdini: Other than a brief stint in prison, he never faces any real punishment for his past villainy, instead getting shipped off to another planet where he leads a pretty comfortable life as ruler of the community.
- Loveable Rogue: Became this after making his full Heel Face Turn in Season 4's "Chain Reaction".
- Pet the Dog: He gets a moment before his official HeelFace Turn in "Foothold", when Carter is forced to turn to him for assistance after the SGC is infiltrated by hostile aliens. After being spectacularly unhelpful for much of the episode, he gives her full credit for saving the day at the end and commends her quick thinking.
- Perpetual Tourist: For a while, after his treason conviction.
- Put on a Bus: After O'Neill helps smuggle him offworld to avoid prison at the end of season 6's "Paradise Lost". He makes one more appearance in season 8 before disappearing from the show entirely.
- Running Gag: For a while every episode in which he showed up would inevitably feature O'Neill threatening to shoot him. He finally gets his wish in "Paradise Lost".
- Teeth-Clenched Teamwork: To varying degrees whenever he and O'Neill end up working together.
- Vitriolic Best Buds: After a long period of antagonism, his later episodes with O'Neill began to veer towards this. Jack seems to no longer harbour an uncontrollable urge to shoot him. At least not often.
A US senator who initially learned of the SGC by demanding to know what black project the Air Force was dumping millions of dollars into out in Colorado. He continually tried to have the command shut down and/or transferred to his control, and collaborated with the rogue NID frequently. In season 7 he was elected vice president, then promptly fired when President Hayes lost patience with him in "Lost City".
- And Then John Was a Zombie: The Trust implant him with a Goa'uld symbiote in his final appearance and use him as part of a plot to turn the US and Russia against each other.
- Asshole Victim: Nobody was particularly saddened when he was possessed by a Goa'uld and, presumably, killed when Prometheus destroyed the ship he was on. Considering how much of a pain in the ass he was for the SGC, it's not surprising.
- Be Careful What You Wish For: This little quote he made will one day grant him all the power he ever craved for: A snake drilled into his head that will give him physical strength and knowledge of the Goa'uld. Oh, but without any free will or control over his body.Kinsey: The only currency in this town is power. So if I have to shake hands with the Devil to do the Lord's work, then so be it.
- Belief Makes You Stupid: The very first time he tries to shut Stargate Command down, he basically tells Daniel Jackson that "God will protect Earth from the Goa'uld." Daniel Jackson not only points out how ridiculously stupid this is, but recruits Jack O'neill, Teal'c, and Samantha Carter to disobey orders and use the stargate to hijack one of the two Goa'uld warships determined to prove Kinsey wrong, and numerous alternate realities prove the Goa'uld would have if SG-1 hadn't followed Daniel Jackson's lead.
- Big Bad Wannabe: In a sense; Kinsey's political ambitions made him dangerous, but his fundamental incompetence when it came to dealing with the Goa'uld meant that it was always relatively easy to demonstrate just how screwed Earth would be if they let Kinsey handle things.
- Chronic Backstabbing Disorder: He's betrayed the rogue NID, the Trust, the Russians, Stargate Command, and the U.S. government at one time or another. O'Neill even calls him out on it after Kinsey loses his position as vice president and wants revenge on the Trust.
- Corrupt Politician: He's willing to do pretty much anything in the name of defending the US (and to a lesser extent, the rest of the planet), and he frequently collaborates with the Trust, getting a good deal of his funding from them.
- Dirty Coward: He makes it pretty clear that his only priority when Anubis attacks Earth in the season 7 finale is saving his own ass, and tries to force Weir to open the gate for him to evacuate to the alpha site despite the fact that Anubis had previously tried to send a nuke through.
- Draft Dodging: Very heavy implied to have done so. He makes the excuse that he couldn't serve in the military because of a medical condition, which is something you'll hear a lot from Vietnam-era politicians.
- Eagleland: Type 2. He honestly believes that the Goa'uld and their advanced weapons and starships are nothing against the might of the Red, White and Blue, by God!
- Enemy Mine: In "Full Alert", he turns to O'Neill for help in bringing down the Trust.
- Even Evil Has Loved Ones: He has a wife, three children, seven grandchildren, and his dog Oscar.
- Evil Chancellor: To President Henry Hayes after they were elected to the White House. Only lasted a short while before President Hayes got fed up with Kinsey and forced him to resign as vice president.
- The Fundamentalist: Sometimes seems to have fundamentalist Christian leanings, though it varies from episode to episode.
- Jerkass: Kinsey never say anything positive or kind to anyone. Anything that comes out of his mouth is either insults, reprimands or boasting of his massive ego.
- Hate Sink: His very existence is to be hated by the main cast and the fans of the series.
- It's All About Me: His self-centered attitude would shock most Goa'uld; as an example, in a future timeline where victory over the Goa'uld won him the presidency, at the ten-year-anniversary celebration of the forming of the alliance that achieved that goal, he thanked SG-1 for what they had done for him, and for the country, in that order.
- Knight Templar: He explained this himself very well, using it to justify the very hypocrisy O'Neill had just called him out on:
- Laser-Guided Karma: Every crime that he did eventually came back to haunt him when Anubis came to Earth, culminating in the President, after having read incriminating evidence against Kinsey, deciding to force him into "early retirement" from being the Vice President, and also implies that if he didn't, he would have done far worse to him as he "had enough evidence as to have [Kinsey] shot." He was even taken as a Goa'uld host, after all those years of saying the snakes were no real threat to earth.
- No Party Given: Though fan theories often make him Republican (which is suggested by his being the VP of President Hayes, who is hinted to be a Republican), his only real political affiliation is "antagonist". He jumps from conservative Christian to "big government" libertarian to blindly trying to reduce the budget to cynical anti-military left winger to rabidly nationalistic belief in American invincibility. Sometimes in the course of one scene. All this really does is underline the fact that he's an unprincipled opportunist.
- Not-So-Harmless Villain: Subverted. He tries to accomplish this after being elected vice president, but his own stupidity routinely derails his plans to take over the Oval Office. In the end, President Hayes fires him without much in the way of political consequences.
- Obstructive Bureaucrat: In his earlier appearances, when the main reason he exists is to make it as difficult as possible for the team to do their jobs.
- Pragmatic Villain: Flat out admits to being one to Elizabeth Weir. He'll work with anyone, be it the rogue NID or Stargate Command, to advance his goal of becoming President.
- The Quisling: In the spirit of the original Quisling of Norway, he's absolutely convinced himself that shutting down the stargate program, and completely surrendering to the Goa'uld will convince them that Earth is not a threat. To maintain this belief, in the light of irrefutable and insurmountable evidence to the contrary beyond any standard of doubt, he twists logic and reason into a more and more convoluted Gordian Knot on each appearance, even going so far as to try and discredit Thor, of the Asgard, Earth's most prominent and powerful alien ally.
- Running Gag: Invariably gets aliens' titles wrong.
- Too Dumb to Live: He repeatedly tries to get the Stargate program shut down, even though the Goa'uld are already aware of humanity and have learnt the location of Earth. Just how stupid this is gets lampshaded by everyone.
- Took a Level in Jerkass: He's always been unpleasant, but he rapidly progresses from merely annoying and obstructive to outright villainous.
- What Happened to the Mouse?: He's pretty much the only major villain whose ultimate fate was never definitively resolved. The last we see of him, he gets possessed by a Goa'uld, who then kills his Goa'uld boss and makes a Villain: Exit, Stage Left using a handy nearby shuttlecraft (albeit set up in a manner that means he could have been blown up before he could get off the ship).
- You Have Outlived Your Usefulness: The Trust kick him to the curb pretty rapidly after he's fired from being Vice President.
A US Air Force colonel affiliated with the rogue NID operation. He repeatedly interfered with SGC operations, including stealing a Goa'uld-infested gazillionaire out from under them. He was finally arrested and convicted of treason, but that wasn't the end of it.
- And Then John Was a Zombie: He gets taken over by a Goa'uld for all of about five seconds before being Thrown Out the Airlock.
- Arc Villain: Acted as a recurring antagonist for part of season five between the death of Apophis and the rise of Anubis.
- Asshole Victim: Nobody really sheds a tear over him being infested with a symbiote and then blasted into space.
- Come with Me If You Want to Live: Says this to the Goa'uld-infested multimillionaire Adrian Conrad in order to smuggle him away from the team and lock him away for questioning.
- Evil Is Petty: So very petty. At one point he keeps O'Neill waiting outside his office for two hours just because he can.
- Fantastic Racism: He tries to resume gate operations while Teal'c is stuck in the buffer — which would effectively kill him — pointing out that numerous Americans have lost their lives on missions and asking how Hammond can care more about Teal'c than "one of their own".
- In the Back: He shoots O'Neill in the back to stop him from getting to Conrad first, allowing O'Neill to assume that it was Maybourne.
- Jerk with a Heart of Jerk: Unlike Maybourne, he has no redeeming qualities whatsoever and pretty much exists to be hated.
- Kick the Dog: Attempting to blackmail Hammond and threatening to restart gate operations while Teal'c is still stuck in the buffer.
- Replacement Flat Character: He effectively replaces Maybourne as the antagonistic face of the rogue NID operation after Maybourne becomes too sympathetic to fill the role.
- Shut Up, Hannibal!: To the Goa'ulded Conrad when they're trying to commandeer the Prometheus:Simmons: Are we going to get into the hyperdrive anytime soon here?Conrad: I'm working on it, but the design is incredibly crude. It amazes me that a race as backward as yours could even think of attempting interstellar travel.Simmons: Spare me the supervillain riff. We're on the clock here.
- Thrown Out the Airlock: After the Goa'uld infesting Adrian Conrad jumped hosts to him in "Prometheus", he tried to kill O'Neill, who spaced him.
Initially one of Kinsey's aides, Woolsey was first brought in to conduct an inquiry into the botched rescue mission that led to the death of Janet Fraiser. Despite this, he had a clean record and was described as being much sharper than his employers, and after realizing just how deep Kinsey's corruption ran he supplied the President with evidence of his illegal activities. He then became head of the IOA committee and continued to obstruct the running of the SGC, though he gained some respect for the team after seeing them in action on a diplomatic mission gone wrong. Eventually joined Atlantis, where he succeeded Carter as head of the expedition and continued his ongoing Character Development.
- Big "SHUT UP!": Gives one to the foreign IOA ambassadors as they're plaguing Carter with questions while she's trying to save them all from a horde of flesh-eating bugs, yelling at them to shut up and let her work.
- Bring My Brown Pants: It's heavily implied that he pisses himself when a seriously annoyed Daniel, having been turned into a Prior, telekinetically pins him to a wall and threatens him, briefly glancing down at himself after he's beamed back to the SGC. According to Word of God, they were initially going to include a shot of the act, but it was cut for being crude.
- The Dragon: Initially fills this role for Kinsey before he has a change of heart.
- Gone Horribly Right: After the incident Khalek, Daniel hopes that Woolsey will never make a similar mistake when dealing with another ascended being. Once Daniel becomes a Prior, Woolsey, who has taken the lesson to heart, tries to have him killed to prevent another disaster.
- Heel Realization: He realizes that the people he's working for aren't the good guys when Kinsey more or less admits to him that he's willing to do whatever it takes to make the President see things his way.
- Hypocrite: In "Prototype", he advocates studying a genetic clone of Anubis in spite of everyone at SGC thinking it's too dangerous - In "The Shroud", he recommends killing Daniel because of the potential threat he poses as a Prior. The hypocrisy is even pointed out in-show. However, this could also be seen as not wanting to make the same mistake twice.
- Jerk with a Heart of Gold: He has good intentions beneath it all, but his attitude frequently makes him come across like a jerk.
- Nice Job Breaking It, Hero!: For a loose interpretation of "hero". His insistence in "Prototype" that Khalek, an advanced human created by Anubis using his own DNA, should be kept alive for study, leads to several guards being killed or injured after Khalek escapes and almost succeeds in ascending.
- To be fair, his actions result in the development of the Prior Disruptor, which temporarily shuts down the Priors' abilities, based on the chance they had to analyse Khalek.
- Non-Action Guy: He's a career bureaucrat, not a soldier.
- Nothing Personal: Unlike Kinsey, he doesn't harbor any personal grudges against the team, he just genuinely believes they're all terrible at their jobs and a danger to the planet. He's seen to be somewhat disturbed when Kinsey implies an inappropriate relationship between O'Neill and Carter in order to try and turn the President against them.
- Obstructive Bureaucrat: He's a stickler for rules and he generally opposes the way that the SGC is run, though he's usually at least fair.
- Only Sane Man: He's the only member of the IOA who's actually interested in doing his job, rather then grandstanding or trying to screw over the other nations.
- Pet the Dog: He praises the team for the efforts at the end of "The Scourge" after he witnesses firsthand what they actually tend to go through on the average mission.
- Reasonable Authority Figure: When Daniel becomes a Prior, Woolsey initially tries to have him killed, but proves amenable to having him instead placed in stasis in the Antarctic outpost. It's also implied that he shields Stargate Command from the more petty ambitions of the other IOA representatives.
- Sympathetic Inspector Antagonist: For his first couple of appearances. What sets him apart from the other Earthborn antagonists is that he is a scrupulously honest Consummate Professional. He's not trying to twist the situation to his own gain (and doesn't appreciate it when others, such as Kinsey, try to use him for it), he's a man with a job to do and is usually willing to actually listen. As he puts it in "Inauguration"...I also hope history one day shows that... I tried to do the right thing.
- Transplant: Becomes part of the main cast of Stargate Atlantis beginning in the spinoff's season three.
The Arch-Enemy of the Asgard, a nigh-indestructible race of robotic "bugs" originally created as toys by a lonely Robot Girl and given only two commands: to make more themselves and to defend themselves against anything that might try to destroy them. They naturally took these instructions to their logical extreme, to the extent that their only goal was to replicate and destroy anything that got in the way of them doing so. Later seasons also introduced human-form replicators, which were depicted as being more powerful, intelligent and self-aware than their insect brethren. They were eventually wiped out at the end of season 8 after the Carters and Ba'al programmed the Dakara superweapon to be used against them, though the IOA attempted to bring them back to use against the Ori in The Ark of Truth.
- A.I. Is a Crapshoot: Originally, the Replicators were toys for a very childish Robot Girl. She taught them how to make more of themselves, and how to defend themselves if they were attacked. Once they became so numerous that she couldn't control them anymore, they fell back on these two instructions and have been following them ever since.
- Arc Villain: They're far more dangerous than the Goa'uld,, but they have fewer appearances and are primarily fighting the Asgard, not SG-1.
- Big-Bad Ensemble: With Anubis during the "Reckoning" two-parter.
- Bishōnen Line: The human-form replicators demonstrate more intelligence and coordinate the others.
- The Dreaded: The Replicators brought the Asgard to the brink of extinction and crushed the entire Goa'uld empire in a matter of weeks. Everyone with basic knowledge of them fears them.
- Early Installment Weirdness: They were initially a metallic purple color and could reconstruct themselves after being shot. Later appearances made them gray and dropped the reconstruction.
- Eviler Than Thou: They easily overpower the Goa'uld near the end of season 8, even tearing apart the Nigh Invulnerable Kull Warriors.
- Expy: They have a lot of similarities to the Borg as originally envisioned in Star Trek: The Next Generation, in that they're a self-replicating hive-minded robot species that assimilates and adapts advanced technology, though unlike the Borg they aren't cyborgs. And like the Borg, they eventually add humanoid members with distinct personalities.
- From Nobody to Nightmare: They were originally toys.
- Galactic Conqueror: The Asgard home galaxy and the Milky Way were both nearly overrun by them.
- Generic Doomsday Villain: They lack any motivation beyond their desire to replicate. However, this goal leads to a wide range of abilities and keep them a terrifying threat.
- Godzilla Threshold: They keep needing more and more implausible and destructive methods to defeat, going from crashing a ship into a planet (twice), to luring them into hyperspace with an advanced starship and then blowing it up, altering the flow of time around a whole planet, collapsing a star into a black hole to destroy them once, and finally wiping them out with a galaxy-spanning superweapon.
- Grey Blocks: They exist purely to consume advanced technology and materials in order to make more of themselves.
- Hive Mind: Implied, though their exact workings aren't clear.
- It Can Think: The Asgard found this out the hard way once they started adapting to their technology. It's unclear exactly how intelligent they are, since they make no effort to communicate and prefer to Zerg Rush everything rather than use actual tactics. However, they have unparalleled learning ability and when backed into a corner, such as when their entire species is aboard the Odyssey, they behave much more methodically, cutting crew off from each other, taking over systems one by one, and avoiding confrontations until they have enough numbers.
- It Only Works Once: Thanks to RepliCarter fooling the SGC into letting her mess with the Replicator disruptor built by Jack in "New Order," the Replicators develop a way to shield themselves from its effects such that, unless you blast every Replicator at once, the survivors will adapt to its effects.
- Just a Machine: Daniel Jackson claims this makes them unable to comprehend Ancient knowledge. RepliCarter disagrees.
- Mind Rape: The human-form versions employ a particularly brutal variant which involves shoving their entire hand into somebody's forehead in order to rummage through their brain, causing incredible pain for the victim. Block replicators can control a human in this manner, with much more gruesome results.
- Nanomachines: Human-form Replicators are made of these.
- No-Sell: Energy weapons are useless against them.
- Omnicidal Maniac: They don't necessarily want to kill all life, it's just getting in the way of their replication.
- Rock Beats Laser: Almost impervious to the energy weapons of the most advanced races in the galaxy, not so much to a P90.
- Starfish Robots: Their most common form is a four-legged "bug" form about a foot long, which demonstrate animalistic behavior.
- Sliding Scale of Robot Intelligence: Level 4 for most of the series, but edge closer to 5 under the command of the human-form replicators.
- Summon Bigger Fish: The IOA attempt to do this in Ark of Truth, using the Asgard core on the Odyssey to create a replicator in the hopes of using it to attack to Ori. It... doesn't go well.
- Zerg Rush: The only combat tactic they ever use is spamming vast numbers of combat forms at the enemy. Thanks to their energy weapon resistance Tau'ri Dakka is about the only counter there is.
The fifth human-form Replicator to be created, he featured a quality that his fellow human-form Replicators lacked: emotions. O'Neill took advantage of this, tricking him into helping SG-1 escape and leaving him and the others trapped by a Time Dilation device. Reappears in Season 8 seeking revenge.
- A.I. Is a Crapshoot: Played with. The Fatal Flaw that becomes his undoing? He was made too human!
- Create Your Own Villain: As the most human of his brethren, he's initially helpful to the team; then O'Neill and Carter abuse his trust and leave him trapped in a time dilation field, after which he returns with a serious grudge against them, having experienced the other end of the spectrum of human emotion.
- Does This Remind You of Anything?: His torture and Mind Rape of Carter is uncomfortably reminiscent of actual rape, what with him repeatedly shoving his hand inside her head as she cries and begs him to stop.
- FaceHeel Turn: After SG-1 leaves him for dead.
- Hoist by His Own Petard: Creates Replicator Carter as his companion, only to be destroyed by her.
- Lotus-Eater Machine: He traps Carter in a fictional world where she's living out a life of domestic bliss with her boyfriend Pete in an attempt to keep her with him, though it doesn't take her long to see through the ruse.
- Psychopathic Manchild: Carter notes at one point that he basically has the mentality of a teenage boy.
- Stalker with a Crush: Towards Carter. He claims that he "loves" her after subjecting her to hours of torture, tries to imprison her in a mental world, and later creates a replicator double of her after she rejects him.
- Token Good Teammate: Initially the only sympathetic human-form replicator. Even after his FaceHeel Turn, he's still the most human of them due to his "design flaw".
- What the Hell, Hero?: Does not react well to SG-1's betrayal.
- Woobie, Destroyer of Worlds: He essentially turns against the team because they hurt his feelings by betraying and abandoning him.
A human-form Replicator created by Fifth in the image of Sam Carter, trained to kill the original. She also grew to hate Fifth and tricked SG-1 into helping her destroy him, then turned on them and became the Season 8 Big Bad.
- An Arm and a Leg: She deliberately separates her own arm in order to escape when Teal'c grabs her as she's going through the Stargate. She manages to grow it back.
- Big-Bad Ensemble: Shares the role of the main antagonist with Anubis during season 8, as they each have their own separate — and equally dangerous — plot to Take Over the World.
- Bitch in Sheep's Clothing: She initially appears to help the team and even claims that she wants them to kill her, but it's just a ruse and she quickly turns on them after tricking them into rendering their only effective weapon against the replicators useless.
- Blatant Lies: She promises not to invade Earth or kill Daniel, who she's taken prisoner, before doing both in quick succession by the end of the same episode.
- Breaking Speech: Gives one to the real Sam after revealing her true identity:"You have untapped greatness inside you, Sam, but you're limited by your own fears. You play by the rules, you do as you're told and you deny yourself your own desires."
- Chronic Backstabbing Disorder: She betrays both Fifth and her human counterpart in short order.
- Evil vs. Evil: She completely massacres the Goa'uld System Lords after invading the Milky Way. Part of the reason why she subjects Daniel to a painful mind probe is to find a way to destroy Anubis.
- Hoist by His Own Petard: Daniel turns her Mind Rape against her while she's searching his subconscious for the knowledge of the Ancients, allowing him to briefly take control of her replicator armies and buying Carter and Jacob enough time to finish modifying the Dakara superweapon and wipe them all out for good.
- I Cannot Self-Terminate: She initially contacts the SGC asking them to kill her, claiming that she can't reconcile her identity as Samantha Carter with the reality of what she is. Turns out to be a subversion, however, as she has no intention of dying and she's just trying to gain the trust of her human counterpart.
- Impaled with Extreme Prejudice: Her favored method of killing involves running people through with her sword-arm.
- Not So Different: She invokes this by claiming that the real Carter has the same capacity for ambition as her, she just lacks the initiative to take what she wants.
- Playing Both Sides: She effortlessly plays both Carter and Fifth before betraying them both and revealing her own, separate agenda.
- Robot Me: A replicator double of Carter, created by Fifth after the original rejects him.
- Shapeshifter Weapon: She has the ability to transform her arm into a sword when necessary, in an apparent homage to the T-1000 from Terminator 2: Judgment Day.
- The Starscream: Betrays and destroys her creator Fifth for being "weak", and takes over his plan to invade the Milky Way.
- Take Over the World: Her endgame is to take over the galaxy by invading the Milky Way, which had previously been untouched by replicators.
- That's What I Would Do: She taunts Carter with this at one point, pointing out that her mind was modeled after Carter's and that no matter what the latter does to stop her, they think in the same way and she will always be one step ahead.
- Toplessness from the Back: She's introduced this way upon her creation.
- We Can Rule Together: She offers to help Daniel access the Ancient knowledge in his subconscious, claiming that they can discover the secrets of the universe together if he cooperates with her.
A race of ascended beings introduced as the new Big Bad for seasons 9 and 10 after the Retool. They differed from the Ancients in that they believed humans should worship them, and used their Priors — formerly human preachers imbued with special powers — to disseminate the religion of Origin, which purported to help its followers achieve ascension.
They were initially confined to a far-off galaxy until Daniel and Vala transported themselves over there and inadvertently alerted them to the presence of humans in the Milky Way, at which point they instructed their followers to mount a crusade and force all the unbelievers to convert or die. As villains, they were a good deal more threatening than the Goa'uld due to actually having the powers to back up their claims to godhood. The Ori themselves were eventually destroyed towards the end of the final season, but Adria, as well as their Priors and human followers, continued to pose a threat until The Ark of Truth.
- Arc Symbol: In addition to the sigil that dons their uniforms, weapons and religious sites, they're strongly associated with fire. The Ori themselves apparently reside in the holy fires of Celestis, and their favored punishment for unbelievers is to Burn the Witch!. Daniel speculates at one point that the reason humans have an instinctive fear of fire and fire being associated with evil is due to the Ancients subconsciously warning them against the Ori.
- Arc Words: "Hallowed are the Ori".
- As the Good Book Says...: The Priors are fond of quoting the Book of Origin, their version of the Bible.
- Book Burning: They prohibit their human followers from learning anything about their history that could contradict Origin and regularly burn the contents of libraries on the worlds they conquer.
- Crystal Dragon Jesus: As a practical religion, Origin is similar to fire-and-brimstone-style evangelical Christianity, but uses the iconography of Roman Catholicism (grandiose cathedrals, a pope in the form of the Doci, robed itinerant priests). Its textual theology mashes up The Bible with elements of Buddhism in its focus on enlightenment and ascension (and Tomin intends to work to keep this part alive after the Ori are defeated).
- Energy Beings: Like all ascended beings, the Ori exist as pure energy, though they take the form of fire rather than the white light of the Ancients.
- Evil Albino: The Priors all have white hair and eyes in addition to strange, scar-like markings on their faces.
- Evil Counterpart: For the ascended Ancients.
- Gods Need Prayer Badly: It's revealed that the Ori somehow gain power from those that worship them, which is why they're so keen to convert as many worlds as possible.
- Greater-Scope Villain: The Ori themselves are initially presented as this to Adria's Big Bad, since they're not really characters so much as a concept. Turns out to be something of a subversion, however, as the Ori are defeated fairly easily before the end of the final season, while Adria remains a threat until the end of the arc and becomes more powerful than the Ori put together after ascending and gaining all their power.
- Join or Die: Anyone who refuses to embrace the word of Origin can pretty much expect a grisly death in their future.
- Kill the God: For all their power, the Ori themselves are wiped out without much fanfare halfway through season 10, after Daniel completes the Sangraal — a weapon specifically designed by Merlin to kill ascended beings — and the team sends it through the Supergate to their home galaxy. It's left ambiguous as to whether this actually worked until Ark of Truth, however.
- Knight of Cerebus: They lack the charisma and Large Ham tendencies of the Goa'uld, in addition to being much more powerful, and the final two seasons of the show are much darker than the previous eight as a result.
- Path of Inspiration: They use the promise of ascension to lure people into committing some fairly heinous deeds in the name of Origin.
- Religion of Evil: Played with. While the Ori and many of their followers are undoubtedly evil, it's implied that the religion itself isn't necessarily the problem so much as the common interpretation of it. Daniel would often counter the Priors' sermonizing with contradictory quotes from the Book of Origin, and Tomin once angrily called out a Prior for deliberately twisting a passage in order to justify destroying a village. The ending of Ark of Truth implies that Tomin intends to spread an altered version of Origin as a benevolent religion, as many of its teachings still have relevance.
- Sufficiently Advanced Aliens: More so than the Goa'uld, since they actually have powers rather than relying on technology, and are shown to be capable of most of the feats associated with actual gods, including resurrection and inciting "virgin" birth. After a certain point, the team stop trying to convince their followers that they lack the power of gods, instead questioning whether that makes them worthy of worship.
- Touched by Vorlons: The Priors are ordinary humans and Jaffa granted certain powers by the Ori.
The leader of the Priors, the Ori's "clerics"/priests. The Ori can also possess the Doci to speak directly to humans. Like the Priors, the Doci worships the Ori out of a genuine sense of religious devotion and is unaware of their true nature.
- The Dragon: He's like the Dragon to the Ori as a whole. In The Ark of Truth, Adria is the last Ori, so that basically makes him Number Two by default.
- Everyone Calls Him "Barkeep": He's only ever called the Doci in the series.
- Evil Albino: His bizarre coloring is a byproduct of Ori empowerment.
- Good Shepherd: Again "genuine sense of religious devotion". When he learns that the Ori are evil he's devastated.
- Mouth of Sauron: The Ori never physically appear, but they deliver orders to the Priors through him. They can also possess him to speak to others directly.
- My God, What Have I Done?: In The Ark of Truth. After the Ark reveals the truth of the Ori to him, he begs for mercy and ends up weeping over all he has done in the name of the Ori.
- No Name Given: We never get to learn his name, just his title.
- Touched by Vorlons: Like the other priors, he was created by the Ori by zapping the human he used to be with their ascended powers to forcibly evolve him.
A devout follower of Origin who married Vala while she was stranded in the Ori galaxy, Tomin joined up as a soldier in the crusade against "unbelievers" in the Milky Way after a Prior cured him of a limp that had made him the subject of lifelong mockery, and swiftly rose through the ranks to become the commander of his own fleet. Despite his commitment to his belief in Origin, he was described by Vala as a gentle soul and clearly didn't relish killing. He began to have doubts after witnessing how the Priors would warp the true meaning of the religion to suit their purposes, and eventually performed a full HeelFace Turn to help the team in Ark of Truth.
- The Atoner: He becomes this after his HeelFace Turn, attempting to make up for the hundreds of people he's killed in the name of the Ori. In the epilogue of Ark of Truth he tells Vala that he's going to try to keep the faith of Origin itself alive but focus on the good parts.
- But I Can't Be Pregnant!: Inverted. Tomin genuinely thought Vala's baby was his, but then the Prior who healed him explains that he was sterile when they were married (the Prior fixed that, too). This is when we learn about the Orici.
- Crisis of Faith: He genuinely believes that Origin as a religion has a lot to teach, which comes into conflict with knowing the truth about the Ori.
- From Nobody to Nightmare: Initially a good-natured villager with a limp, but after being healed of his injury he becomes a high-ranking soldier in the Ori military who's lost count of how many people he's had killed in a relatively short space of time.
- Heel Realization: First hinted at in "Line in the Sand" when he witnesses a Prior changing the meaning of a passage from the Book of Origin in order to justify destroying a village, but it doesn't come into full effect until the beginning of Ark of Truth.
- Just Following Orders: In his first appearance after the beginning of the Ori Crusade, he orders his soldiers to massacre captured villagers who refused to convert to Origin. However, he visibly hesitates before giving the order, foreshadowing his later HeelFace Turn.
- Knight Templar: He genuinely believes in his cause, which unfortunately involves converting an entire galaxy to his religion on pain of death.
- Last Kiss: Gives one to Vala in "Line in the Sand" after he disobeys orders and lets her go, expecting to be killed as punishment.
- MookFace Turn: He renounces the Ori and helps the team in Ark of Truth after witnessing SG-1 kill a Prior and then showing him how they did it, Doing In the Wizard for him.
- Mook Lieutenant: He eventually rises to the rank of Commander in the Ori army.
- My God, What Have I Done?: After his HeelFace Turn. Teal'c gives him a bit of a speech about it, having been in a similar place himself, essentially telling him that he'll never forgive himself but it's now his duty to spend the rest of his life trying to atone for what he's done.
- Shotgun Wedding: Vala initially marries him in the hopes of passing her baby off as his after she inexplicably falls pregnant while stranded in a galaxy that frowns on extramarital sex. It works, until a Prior decides to spill the beans about the true origins of the child.
- Sixth Ranger: He joins the team for the duration of Ark of Truth, but leaves again at the end of the film.
- Star-Crossed Lovers: With Vala. They both admit that they have genuine feelings for each other, but they're on opposing sides of a war and their ideologies are completely incompatible.
- Would Hit a Girl: He backhands Vala across the face in a fit of temper after she tells him that the Ori aren't gods, though he seems to regret it afterwards.
Adria was "conceived" by the Ori, and is the "virgin birth" daughter of Vala Mal Doran ("virgin birth" in quotes since Vala was hardly a virgin). A human possessing the vast cosmic powers of the Ori, she was created as a sort of Ori Messiah to lead the conquest of the Milky Way Galaxy. Being effectively an Ori in a human body, Adria is fully aware of their true nature. Although she has a sentimental attachment to her mother, she's otherwise quite evil and sadistic, just like her Ori progenitors.
Since the Ori themselves are a concept rather than actual characters, Adria mostly serves as the final Big Bad of Stargate SG-1. After the Ori are destroyed by Daniel Jackson, Adria absorbs their combined power (or more precisely, since the Ori draw their power from worshipers and she's the only Ori left, she gets everything that used to be shared among the group) and attempts to take over the universe (she fails, of course).
- Ascend to a Higher Plane of Existence: She ascends at the end of "Dominion", due to her physical body dying after the cloned symbiote Ba'al implanted her with releases a deadly toxin into her system.
- Balcony Speech: Gives one to her followers at the beginning of "Counterstrike".
- Belligerent Sexual Tension: Much of her interaction with Ba'al. Carter even comments on it when she tells them to "get a room".
- Big Bad: For Season 10 and The Ark of Truth. In the latter, she was the only Ori left, so all Priors and Ori worshippers served her alone. Season 9 didn't have a Big Bad because SG-1 only dealt with the Ori's followers.
- Can't Kill You, Still Need You: She twice claims that she won't kill Daniel as she has "plans" for him, which later turn out to be using him to get the Sangraal and turning him into a Prior.
- Circling Monologue: She does this in her ascended form in Ark of Truth, rapidly circling around Vala while delivering a lengthy monologue.
- Color Motif: In keeping with the fire symbolism associated with the Ori, she often wears red and gold clothing, and her eyes occasionally turn red-gold.
- Creepy Child: Not that she stays a child for very long, but she sure is creepy.
- Dark Messiah: She's basically Origin's version of Jesus, a being that's part "god" and part human and conceived without sexual intercourse. She was essentially created to lead the Ori armies to victory in the Milky Way, and acts as a charismatic and dangerous figurehead for their movement.
- Dragon Ascendant: Quite literally. Her original purpose is to be the Ori's representative on the lower planes, but they're all killed off before the end of the series and she absorbs all of their previously shared powers when she ascends.
- Enemy Mine: She briefly teams up with SG-1 and and Ba'al to find the Sangraal in "The Quest" two-parter, though none of the parties involved bother to hide the fact that they're all using each other and intend to stab the others in the back once the thing is found.
- Evil vs. Evil: Frequently with Ba'al, whom she loathes despite the sexual undertones of their interactions. She outright states in "The Quest" that the only reason she doesn't kill him is because her powers are inhibited by Morgan Le Fay's protections.
- Genetic Memory: She has access to all the knowledge of the Ori from birth.
- A God Am I: Like the Goa'uld, Adria actually believed herself to be a god, although perhaps more justifiably, since unlike them she's actually an Energy Being with innate godlike powers.
- Implacable Woman: She calmly and methodically tracks the team across three separate planets by hacking the DHDs until she's manages to catch up to them.
- Kick the Morality Pet: Any time she gets angry enough to hurt Vala, the only person she actually cares about.
- Living Lie Detector: She can sense a person's intent just by looking at them. In the penultimate episode, the team have to employ a Memory Gambit to make her believe that Vala isn't with them anymore for precisely this reason.
- Loophole Abuse: She was basically created as a way for the Ori to get around the Ancients' non-interference clause; they can't directly act in the mortal plane without risking the Ancients moving against them, but a mortal being that's part-Ori part-human can.
- Pet the Dog: It's made clear on several occasions that she does genuinely love her mother and wants her to convert to Origin so that they can be together. The team occasionally attempt to exploit this and use it against her, but it rarely works.
- Protective Charm: She wears a piece of the holy city of Celestis around her neck, which works like a personal shield to prevent her from being harmed.
- Psychic Strangle: Her favored method of killing, though she usually combines it with a Neck Snap for maximum efficiency. At one point she does it to four Jaffa simultaneously.
- Rapid Aging: She grows from a newborn infant to a young woman in her twenties in a matter of days.
- Red Eyes, Take Warning: Her eyes seem to change color based on her mood. When she's calm, as at right, they're brown. At other times they were red, and at still others they blazed with flames.
- Sealed Evil in a Duel: How she was finally got rid of in the Ark of Truth movie when they used the eponymous device to (un)brainwash the Ori followers in the Ori Galaxy. Likely ended up dead in said duel (against Morgan Le Fay) when the procedure was repeated in Milky Way.
- Soft-Spoken Sadist: She always has a very soft speaking voice and she's utterly ruthless.
- Tyke-Bomb: Pretty much created expressly for the purpose of taking over the Milky Way.
- Villainous Crush: She seems quite infatuated with Daniel while he's pretending to have defected the Ori, even kissing him before she turns him into a Prior. This can induce some Squick if you take into account the fact that biologically she's less than a year old, and also the daughter of a woman Daniel himself has some considerable UST with.
- Voice of the Legion: She speaks like this in her ascended form in Ark of Truth.
- "Well Done, Daughter!" Girl: Played with. After she's born, Vala notes that part of her is just a human girl who wants approval from her mother and that that's something they can exploit, but it never quite works out that way. In general, though Adria does care for her mother, Origin comes first and she is willing to kill Vala if she has no alternative.
- Younger Than They Look: Actually only about a year old, grown to adulthood over the course of a few days via accelerated aging.