%% ZeroContextExample entries are not allowed on wiki pages. All such entries have been commented out. Add context to the entries before uncommenting them.

[[folder:The Atlantis Expedition - Main characters]]

!!Dr. Elizabeth Weir (Torri Higginson)

The original leader of the Atlantis expedition. An experienced diplomat prior to getting involved with extraterrestrial stuff, she prefers negotiation and talks to confrontation. Was left behind on Asuras in Season Four, and was replaced by Colonel Carter.

Associated tropes:
* BewareOfTheNiceOnes: Prefers peace and negotiation and genuinely values every life under her command, but that does not mean she can't be ruthless when crossed. As Kavanaugh discovered.
* BrainyBrunette: Has two Ph.D's and lovely brown ringlets
* DesignatedParents: With Sheppard for pretty much everyone on Atlantis.
* EmotionsVsStoicism: The stoicism to Sheppard's emotions, she's far more likely to analyze a problem logically and make the tough calls, while he relies on gut feelings and puts personal lives before the big picture.
* TheFace: Not as much as expected given she's a diplomat but there are several occasions when she goes off-world to meet and negotiate with new groups. She's certainly the face of Atlantis in regards to communication with Earth, as the one who deals with Atlantis's superiors.
* FascinatingEyebrow: Her favourite way to express disapproval - and sometimes amusement - at the rest of the teams antics.
* IronLady: Governs Atlantis with a poker face and rarely shows weakness to anyone, with the possible exception of Sheppard.
* HeroicSacrifice: [[spoiler: She stays behind on the Asuras to keep the replicators from attacking the others.]]
** [[spoiler: She then returns, and does this a second time, banishing herself and her fellow replicants to the vacuum of space to protect Atlantis.]]
* TheKirk: Her role on Atlantis, particularly when mediating between [[TheSpock McKay]] and [[TheMcCoy Sheppard]].
* LikeAnOldMarriedCouple: She and Sheppard develop this dynamic, thanks to their close friendship and the shared burden of leading Atlantis.
* MarriedToTheJob: Her relationship with Simon ended due to her going to Atlantis and she refuses any other possibilities of a relationship due to her responsibilities as leader. When the expedition has to leave the city in Season 3, she pretty much shuts down and cuts herself off from her friends for weeks.
* PutOnABusToHell: [[spoiler: Jettisoned herself into space, but as a replicant, she will never truly die and will instead float in along in suspended animation.]]
* OnlySaneMan: What with having to deal with [[{{MadScientist}} McKay's]] tantrums, [[{{HairTriggerTemper}} Ronon's]] violent tendencies, [[{{ProudWarriorRaceGuy}} Teyla and the Athosians]] tribal customs and [[{{ChronicHeroSyndrome}} Sheppard's]] near-death experiences.
* PluckyGirl: Not much of a fighter, but she's got guts.
* RedOniBlueOni: The Blue to Sheppard's Red. Generally in any situation, Sheppard will blast in, shoot someone and Weir will clear up the mess.
* ShipperOnDeck: Retroactively revealed to be one for Teyla and Kanaan.
* ShipTease: With Sheppard
* StrawCivilian: At first, but she grows out of it. She will usually receive open contempt from the military people she interacts with, until she proves her worth to them.
* SilkHidingSteel: Comes across a reserved, soft-spoken diplomat but she's faced the Genii, Goa'uld, Asuran's and IOA, with nothing but her wits to prevent certain death.
* [[{{TheSmartGuy}} The Smart Girl]]: Has ''two'' doctorates, though she focuses on humanities (politics and languages) rather than sciences like [=McKay=].
* TheStoic: The master of the poker face, which is pretty much essential to handle the problems and losses that come as part of leading Atlantis.
* StraightMan: To Sheppard and [=McKay=].
* TeamMom: She is the leader of Atlantis base, and often the voice of reason to Sheppard's more gun-ho attitude.
* TouchedByVorlons: [[spoiler:Became part-Replicator.]]
* {{Transplant}}: First appeared in the ''SG-1'' Season 7 two-part finale. It was known at the time that she would be moving to ''Atlantis'', although it was not known that it would be a parallel spin-off instead of a sequel show.
* WhatMeasureIsANonHuman: [[spoiler:''Self''-applied.]]
* TheWomanWearingTheQueenlyMask: Despite being a commander rather than royalty the trope certainly fits, as she deals with the pressure of being leader of Atlantis with incredible control throughout the series. She may ''feel'' terrified but she'll be damned if anyone ''sees'' it.
* UnresolvedSexualTension: With Sheppard: the two share the burden of command, confide worries to each other unbeknownst to the rest of TheTeam and when the other is in trouble their worry is noticably stronger compared to their other friends. The actors also deliberately played the characters from a romantic angle.
* WillTheyOrWontThey: With Sheppard. [[spoiler: They don't, at least, not that anyone knows of.]]
* UndyingLoyalty: To Atlantis and it's inhabitants. An alternate Elizabeth sacrificed her life to preserve the city and make it safe for the future expedition and she eventually [[spoiler: sacrifices herself to the replicators so the team can get away and save the city.]] On a more personal level to John, as seen when she absolutely ''refuses'' to let his superiors replace him and pulls out all her connections to keep him as her second in command.

!!John Sheppard (Joe Flanigan)

Originally picked because of his natural skill with Ancient technology. Known for having a bit of a problem with authority, but is a highly capable commander. Became Atlantis' ranking military officer and the leader of their main off-world team. Has a profoundly strong expression of the ATA gene.

Associated tropes:
* AcePilot: If it has wings, rotors, thrusters, anti-grav emitters, or any combination of the above, he can fly it.
* AmicablyDivorced: Sheppard and his ex-wife Nancy divorced due to the high risk of his job, but are on friendly enough terms that she uses her position at Homeland Security to pass along important information to him regarding an investigation of his.
* ArchEnemy: To Kolya of the Genii.
* TheAtoner: Admits he constantly tortures himself for his past mistakes and shows a capacity for near suicidal self sacrifice. For more details see BrokenAce.
* BadassInDistress: All the characters fall into plenty of trouble during the show but Sheppard seems to be the go-to guy for getting injured, tortured or held hostage, especially when Kolya's involved.
* BewareTheSillyOnes: Most of the time Sheppard is all goofiness and wise-cracks but he has a dark side that can veer almost into sociopath territory. His killing spree mentioned above is brutal enough to horrify even Kolya.
* BoldlyComing: He's notorious for hooking up with and getting hit on by alien chicks. [=McKay=] nicknames him "Kirk" becomes of this.
** Although this is a bit of an {{informed attribute}} as, while he does frequently get hit on, he very rarely chooses to get involved with the women in question.
* BrokenAce: Attractive, charming, beloved by his team, MENSA-accepted and the best Ancient pilot in two galaxies but also self hating, guilt ridden and secretly believes he deserves to be punished for every failure in his life.
* BunnyEarsLawyer: Sheppard, when given the right motivation (mainly the safety of Atlantis), is a very accomplished pilot and soldier. He just prefers to goof off instead.
* BrilliantButLazy: Sheppard is smart enough to join MENSA, but preferred not to join, and admits that he's "naturally lazy". He's also proved on multiple occasions that he does take his rank and position as Atlantis's military leader seriously.
* ChronicHeroSyndrome: Overly eager to put his life on the line, whether its to save the city, his team, Elizabeth or strangers he's just met.
* ColonelBadass: After his promotion at the start of Season Two.
* DayInTheLimelight: Despite being the main character, actually has a really awesome one of these, "Doppelganger", in which he gets to play an evil energy being that looks exactly like himself (because the entity was first in Sheppard, and so took his appearance).
* DeadpanSnarker: Being surrounded by insufferable genius and alien races means Sheppard often snarks his way through danger. [=McKay=] is a frequent victim.
* DesignatedParents: He and Elizabeth are this for the entire Atlantis expedition.
* EmotionsVsStoicism: Emotions to Elizabeth's stoicism, as he goes by gut instincts and lets his feelings cloud his judgement especially when it comes to saving lives while Elizabeth remains more detached and is prepared to make sacrifices. This is established right from their first argument about launching a rescue mission.
* TheGadfly: Mostly towards [=McKay=] and of course any Wraith, though he doesn't mind winding up higher-ups like Woolsey or Sumner.
* TheHero: The ace fighter pilot who can pilot practically anything, and leads his band of TrueCompanions around the galaxy finding new worlds and saving people. Yeah, he's the Hero.
* HeroicSacrifice: Defied. [[spoiler: Flies a cloaked jumper carrying a Genii nuke into one of the hives besieging Atlantis at the end of Season 1, planning to detonate it with him inside. The Daedalus shows up at that moment and beams Sheppard out before the jumper explodes.]] But he tries on plenty of other occasions to the point [=McKay=] can't even remember how many suicide missions he's flown.
* HiddenDepths: UpToEleven. He initially seems like your average gun-toting, charming flyboy, but is gradually revealed to be a math-whiz whose smart enough to join Mensa and almost as much of a dork as Rodney. His casual attitude also hides how seriously he takes his responsibility to Atlantis, the personal care he shoulders for every life under him and a much darker, ruthless side whenever his friends are in danger.
* InstantExpert: Has an incredibly good degree of control over Ancient Technology.
* TheKirk: Fulfills this role on his team, with [=McKay=] as the [[TheSpock everlasting Spock]], and [[FieryRedhead Teyla]] and [[BloodKnight Ronon]] as [[TheMcCoy the McCoys]].
** TheMcCoy: On Atlantis he's this in relation to [=McKay=] in many disputes, with [[IronLady Weir]] taking his place as [[TheKirk Kirk]].
* LikeAnOldMarriedCouple: He and Weir develop into this as the series continues as co-leaders of Atlantis and their role as DesignatedParents.
* MajorlyAwesome: In the first season.
* MartyrWithoutACause:
-->'''Sheppard:''' It's not like it's the first time. How many suicide missions have I flown?\\
'''[=McKay=]:''' I don't know. I lost count.
* MarriedToTheJob: In the past his job was so secretive and he was so devoted to it that it led to his divorce. In present day he's more committed to Atlantis than any woman.
* MessyHair: Try and find a scene where is hair isn't a mess. Just try.
* MilitaryMaverick: His lax attitude has gotten him nearly court martialled more than once, and most of the other military commanders disapprove of his attitude.
%%* MrFanservice
* TheNicknamer: Has given names to no fewer than five Wraith. First there was Steve, on whom they tested the Hoffan drug, and who died as a result.. Then there was Bob, whom Sheppard and crew captured and interrogated prior to the Siege at the end of the first season, and who ended up shot to death by Sheppard when he wouldn't give up any good intel. Then there was Michael, a Wraith they (briefly) turned human. Then there was Todd ("Guy I knew in college. Very pale."), the NobleDemon and LovableTraitor who probably ended up helping the Atlantis expedition more than any other non-Atlantis character, with the possible exception of the Travellers. And finally there was Kenny, Todd's second-in-command.
* NotAfraidToDie: Definitely, and hinted to be a DeathSeeker. He's shown to be haunted by his past mistakes and whenever there's a suicide mission he's the first to volunteer.
* NumberTwo: An unusual example as he's TheHero and military leader of Atlantis, but is still second to Elizabeth who is overall commander of Atlantis despite being a civilian. He's not all that comfortable stepping up when she's not around though.
* ObfuscatingStupidity: His detractors tend to underestimate his easy-going personality, believing him to be completely undeserving of his rank and position. It usually comes back to bite them in the ass when Sheppard's sharp unconventional thinking give way to show how good he really is.
* OneManArmy: In one (two-part) episode in Season 1, kills about seventy Genii troops on his own (though 55 of those ran into the Atlantis stargate's shield).
-->'''Dr. Beckett''': ''(looking at a life-signs detector)'' These dots don't tell us much about who's who. How do we know which one's the Major?
-->'''Lt. Ford''': He'll be the dot getting rid of the other dots.
* TeamDad: The leader of his team, and second in command at Atlantis. He has a generally laid back friendly personality, but will do anything to protect his people. He and Weir often act as parents of all of Atlantis.
* RankUp: Goes from Major to Lieutenant Colonel between Season 1 and 2, much to his surprise given his military superior's disdain for him. It's revealed Elizabeth was actually the one who persuaded them to promote him, as they were trying to replace him with a higher-ranked officer [[{{CrowningMomentOfHeartwarming}} but she wouldn't accept anyone else but John as her second in command.]]
* RebelPrince: Was groomed to take over his father's business enterprise but chose to join the Air Force instead, passing the buck to his brother.
* RebelliousSpirit: For a military officer he's a total wildcard and has serious problems obeying orders. At the beginning of the series he seems to have given up following anyone and just baits authority figures. He settles in better on Atlantis as, despite a few conflicts, Elizabeth is a leader he actually respects and she establishes a very equal command dynamic with him and being cut off from earth also means his independent thinking is an advantage rather than issue.
* RedHerringShirt: Was introduced this way in the ''SG-1'' episode debuting Atlantis.
* RedOniBlueOni: The Red to Weir's Blue. Much of the series involves her trying to hold back his more impulsive tendencies.
* ShipTease: With Elizabeth.
* ShellShockedVeteran / SurvivorGuilt: Whilst serving in Afghanistan, he watched best friends Mitch and Dex killed when their helicopter was hit by a RPG. He similarly failed to save downed pilot, Captain Holland, disobeying direct orders not to mount a rescue mission and getting ''himself'' shot down in the process, earning him a permanent black mark on his record.
* StepfordSnarker: It's gradually revealed he uses snark to cover up his boatload of insecurities, guilt and self-loathing.
* ThirdWheel: By the end of the series as the rest of his team, Rodney, Teyla and Ronon are all in relationships and [[spoiler: Elizabeth has died.]]
* WillTheyOrWontThey: With Elizabeth. [[spoiler: They don't, as she gets killed off before anything can happen.]]
* UnresolvedSexualTension: With Elizabeth or Teyla, depending on the episode. More frequently with Elizabeth later on, as Ronon appeared and Teyla eventually hooked up with someone else. (Although, he did hallucinate having a dinner date with Teyla). [[spoiler:Elizabeth was eventually captured,]] leaving Sheppard grief-stricken for the remainder of the show and ironically, the only long running cast member that was single at the end of the series. The semi-canon tie-in novels resolve his UST with Teyla, though whether the novels qualify as canon is very dubious.
* UndyingLoyalty: He'll protect his team and friends right to his last breath. It's hard to count the number of his impossible rescue missions, he frequently sticks up for Ronon and Teyla against Earth personnel and flat-out refuses to co-operate with visiting Colonel Everett unless he keeps Elizabeth in the loop.

!!Dr. Meredith Rodney [=McKay=] (David Hewlett)

Atlantis' lead scientist. A brilliant astrophysicist, but also a JerkWithAHeartOfGold, an InsufferableGenius, and a [[ArsonMurderAndJaywalking Canadian]].

Associated tropes:
* AlwaysSomeoneBetter: A few episode hints he might have a few shades of this towards Colonel Carter. In their first appearance (And most of his appearance on SG-1) she'd end up proving him wrong, and its implied that, along with massive UST for the colonel, Rodney is ''excessively'' aware she's better than him and desperately seeks to prove himself her equal, especially to her.
* AscendedExtra: Started off as a one-shot character on SG-1. Then became a 2-shot character and had a sympathetic back-story grafted onto his InsufferableGenius persona. Then became a regular on Atlantis and a fully-realized character.
* BigEater: Justified by his hypoglycemia. [[AlternativeCharacterInterpretation Or is his claim of having hypoglycemia just an excuse to eat more?]]
* BioAugmentation: He went through gene therapy in order to be able to use Ancient technology.
* BizarreTasteInFood: He might be the only man alive who actually ''likes'' [[EvenTheRatsWontTouchIt MREs]]. He's also allegedly deathly allergic to citrus.
* BunnyEarsLawyer: When you can do "difficult" at once and "impossible" in a few minutes, such minor flaws as being a neurotic InsufferableGenius JerkWithAHeartOfGold who has NoSocialSkills are easily forgiven.
* CharacterDevelopment: Most likely undergoes more of this than any other character in the series. If not the entire franchise.
* ChildHater: He's hilariously uncomfortable around children, so naturally, they tend to adore him.
* ChivalrousPervert: He might be often DistractedByTheSexy and openly joke about his long-standing lust for Carter, but he tends to be very nervous and {{Adorkable}} when actually pursuing women, such as Katie Brown and Jennifer Keller. This is also a sign of his character development as the original [=McKay=] from his first appearance in [=SG1=] was obnoxious towards Carter (even claiming to have a thing for "dumb blondes" - a comment he later admits was driven by the fact that he knows that she's smarter than he is, and was intimidated by it) but by the second [=SG1=] episode after he'd been given some redemption his response towards the idea that she didn't hate him was much more like the later [=McKay's=] reactions to women.
* CluelessChickMagnet: Surprisingly often, usually with [=McKay=] being [[ObliviousToLove utterly oblivious]] until it's pointed out.
* CowardlyLion: The guy frets like clockwork about their impending doom when it happens, but somehow frequently ends up coming up with some of his best schemes to extricate everyone from the impending doom while in such a state. He's also [[CrouchingMoronHiddenBadass a surprisingly capable fighter, when stuck in a sufficiently tight corner.]]
* CrouchingMoronHiddenBadass: An enzyme powered Ford leaves him under guard by two of his enzyme powered minions, who're both about twice [=McKay=]'s size. [=McKay=] tries to persuade them that something's gone wrong on the 'mission' that Ford has wrangled the Atlantis team into, and that he should go back to Atlantis to get help. They refuse. He promptly takes a massive overdose of the enzyme and beats the crap out of them, before (just about) managing to get back to Atlantis.
--> And that's what happens when you back a brilliant scientist into a corner!
* DidYouJustFlipOffCthulhu: Rodney cannot help but point out BondVillainStupidity wherever he sees it, belittling the various bad guys for their idiotic plans even when being held hostage and threatened with torture or execution.
* EmbarrassingFirstName: Revealed about half way into the series once the team meets his sister. He prefers to go by his middle name, Rodney.
* GibberingGenius: He's frequently prone to babbling when he's thinking out loud. After an overdose of the Wraith enzyme, he becomes this even more, though he's not especially coherent.
* InsufferableGenius: A very strong trait of his when he's first introduced in SG-1. It becomes much less prominent once he's spent some time in Atlantis and he gets some character development.
* ItsAllMyFault[=/=]NeverMyFault: Flip-flops between the two, usually depending on whether the incident is being played for comedy or drama. For minor screw-ups and/or nobody got hurt, he'll often try to pass the blame to someone else (usually Zelenka). For major mistakes and/or somebody was hurt or killed, he'll blame himself entirely, even if others were involved in the decision.
* JerkWithAHeartOfGold: While he may be rude and condescending to those around him, that doesn't mean he won't give his life to save them. He's also rather self-aware regarding his own flaws, and when he was shedding his burdens in the 'Ascendometer' episode, he specifically tells Zelenka a) that he is an absolutely brilliant scientist, b) that he does not deserve the crap that he's taken from [=McKay=] over the past couple of years. He's also much more caring than he'll generally admit.
* LetsGetDangerous: Rodney is a coward most of the time, but if you corner him, get him sufficiently angry, or especially threaten his friends, [[CrouchingMoronHiddenBadass watch out.]]
* NeverLiveItDown: In-universe. He once [[MikeNelsonDestroyerOfWorlds accidentally destroyed]] [[strike:[[MikeNelsonDestroyerOfWorlds 2/3rds]]]] [[MikeNelsonDestroyerOfWorlds 5/6th of solar system]], and the rest of the team won't let him forget it. Luckily, it was uninhabited.
* PerpetualFrowner: It's because his vast intellect causes Rodney's mind to jump to very worst possibility imaginable. Seeing a half-empty glass on a table will make him wonder just ''when'' it'll roll off the table and shatter, causing a laceration that gets infected, forcing him to amputate his hand with a rusty saw, causing him to die from tetanus.
* ScienceHero: As far as [[InsufferableGenius he's concerned]], he's ''the'' resident ScienceHero of the Pegasus Galaxy. And he's probably right.
* TheEngineer: Rodney is much more a theoretical physicist than an engineer, but he becomes one when the situation demands it. Engineering was actually his second Doctorate.
* TheSmartGuy: Along with Zelenka, he's the go-to-guy to fix up a tech solution to get the team out of some mess. He's well aware of it, and is [[InsufferableGenius more than willing to boast about it]].
* TheSpock: So much of.
* SpottingTheThread: In both "Home" and "Phantoms", [=McKay=] eventually notices that something is wrong with "reality" because both science and the laws of physics simply do not ''work'' that way.
* UndyingLoyalty:
** There is very little that Rodney won't do for the team, if pushed. He once spends the last 25 years of his life (in an averted timeline) developing a holographic AI companion of himself for Sheppard when a time travel accident sends Sheppard 48,000 years into the future.
** His alternate universe counterpart "Rod" is no slouch either, volunteering for a dangerous mission into another reality to save his Atlantis from destruction, before returning home via equally dangerous means because he "couldn't abandon his team".
* {{Transplant}}: Appeared on SG-1 well before Atlantis.
* TheWoobie: Following the deaths of both [[spoiler: Elizabeth]] and [[spoiler: Beckett]], two of the very few people he ever considered friends (and in the latter case, in his own words, 'the best friend I've ever had'), he's quite clearly utterly heartbroken and throws himself into his work to avoid dealing with it. When Zelenka gently tries to get him to open up about it, it's clear that he's on the verge of tears.
** The alternate universe counterpart that spent the last twenty five years of his life designing an AI and concocting a plan to help Sheppard (who'd been thrown 48,000 years into the future) back to the present and to avert the BadFuture that would otherwise have occurred. He'd already lost [[spoiler: Elizabeth]] and [[spoiler: Carson]], and now he'd lost Sheppard - one of his other very few friends - and then it went FromBadToWorse: Teyla was found dead after [[spoiler: she had given birth]] and was no longer of any use to Michael, Carter captained the USS ''Phoenix'' and was killed taking out three of Michael's Hives in an ambush, Ronon split off from Atlantis after the Expedition retreated and died with Todd taking out one of Michael's operations, and while he had a chance of a happy ending with Keller (the two of them deciding that they simply couldn't accept the prospect of standing by and doing nothing while Pegasus suffered), it turned out that she'd got an IncurableCoughOfDeath from complications from repeated exposure to Michael's variant on the Hoffan drug, and was dead within a year. After that, he spent the next twenty five years desperately trying to arrange a way to save Sheppard and undo the BadFuture (which ultimately succeeded), but in the process essentially became a hermit, driving away his sister and almost all his friends. While it isn't stated, the implication is that once he'd set his plan in motion, he died shortly afterwards, completely alone.

!!Teyla Emmagan (Rachel Luttrell)

Leader of the Athosians. Joins Sheppard's team after Athos is destroyed in the pilot.

Associated tropes:
* AbsoluteCleavage: Most of her civilian clothing is tight and V-necked.
* ActionGirl: Manages to keep up with ProudWarriorRace guy Ronon. She's later promoted to ActionMom.
* BareYourMidriff: All of her civilian clothes.
* BoobsOfSteel: Her bust size is modestly larger than Weir or Keller, more in line with the similarly badass Carter, and she can and will kick your ass.
* DarkSkinnedRedhead: In the beginning of the first season, her hair was a reddish-brown color, due to the actress's wigs. As the season went on, her hair color settled on a more natural brown.
%%* FieryRedhead
* MamaBear: Don't threaten her baby. She'll not only kick your ass, she'll make sure to throw you off a tower to your death.
* MsFanservice: In terms of an actual character, Teyla is given very little to do, and scenes of her sparring with either Ronon or Sheppard as a means of opening an episode became suspiciously frequent. She does get ''some'' screen time, but it is usually only to show her fighting. In terms of who she is as a person, we really learn very little.
* TheMcCoy: Always, though sometimes has competition in this regard from the equally emotional Ronon, but she's far more compassionate and much less violent.
* PragmaticHero: Usually, she is the voice of compassion on the team, but she has the potential for extreme ruthlessness, especially when [[MamaBear her child or husband]] are threatened.
* PregnantHostage: Was kidnapped while pregnant.
* [[ProudWarriorRaceGuy Proud Warrior Race Girl]]: Not an extreme example; much closer to Proud Hunter Race Girl.
* RealLifeWritesThePlot: Rachel Luttrell's pregnancy was written into the show.
* ShipperOnDeck: Ships Elizabeth with a one-off character in the third-season episode Sunday, clearly with the goal of getting her to [[YouNeedToGetLaid unwind a little]].
* UnresolvedSexualTension: With Sheppard or Ronon, depending on the episode. She is close to both men; using Sheppard's name as her son's middle name (though, at that point, it's probably more just gratitude and enormous respect), and bonding with Ronon due to their shared history under the Wraith threat and status as the 'outsiders' of Atlantis. However [[spoiler:neither relationship went anywhere]], as she hooked up with [[spoiler:Kanaan and became a mother.]]

!!Lt. Aiden Ford (Rainbow Sun Francks)

A member of Sheppard's team. Didn't get much CharacterDevelopment in Season One; they didn't seem to know what to do with him. At the start of Season Two, became addicted to a Wraith enzyme and went rogue and was replaced by Ronon, a more colorful character with an interesting backstory. Was last seen in the Season Two mid-season two-parter; after, everyone on the show talks like it's taken for granted they will never run into him again.

Associated tropes:
* BusCrash: They gave us a ''huge'' hint that he might show up again but he never did - until the follow up novels, anyway.
* DemotedToExtra: In season one, he was a crucial part of the team, but rarely had anything to do other than to be Sheppard's lieutenant. Season two saw him go rogue in an misguided and enyzme-addicted effort to prove himself to Sheppard.
* TheGenericGuy: Other than being Sheppard's rookie lieutenant, there wasn't much backstory to make him stand out to the audience.
* NiceGuy: Was always friendly towards others, even people like Rodney.
* PerpetualSmiler: Not too much, but noticeable.
* ReassignedToAntarctica: A literal example in "Home", where this happens to him in the LotusEaterMachine.
* UncertainDoom: The last we see of him, he's last seen fighting aboard a Wraith ship that explodes several minutes later. They NeverFoundTheBody and the characters even note that they've survived similar situations several times in the past, but the fact he never shows up again does suggest against his survival.
* WeHardlyKnewYe: Was something of a background character in Season one, despite being part of the main cast. In season 2 he was given a new exciting storyline... and then disappeared for half the season [[spoiler: before returning in a two parter that ended with his apparent death. He wasn't seen in the series proper again, and popped up again in the sequel books]]
* WhatTheHellHero: A non-verbal one in "The Eye", when Beckett's facial expressions makes it look like he doesn't believe Teyla's claim that she didn't kill Tyrus in "Underground", Ford gives him a DeathGlare in response.
* WhatHappenedToTheMouse: His return was left open since the team NeverFoundTheBody. [[spoiler: Unfortunately, the fact he never shows up for the rest of the series suggests he's likely to be dead after all, until he popped up in the sequel series]].

!!Dr. Carson Beckett (Paul [=McGillion=])

Atlantis' senior medical officer. Scottish. Has the ATA gene, but is afraid of using Ancient technology.

Associated tropes:
* BadassNormal: He doesn't fight often, being a doctor. But when he does he fights for keeps.
* BackFromTheDead: [[spoiler:Subverted, sort of, it's [[CloningBlues complicated]].]]
%%* BewareTheNiceOnes
* ChickMagnet: Hoffan scientist Perna, Dr Porter and most notably, Lieutenant Cadman all take an interest in him.
* CloningBlues: After his death, a clone of him is found in Michael’s lab, six months later with the exact memories and personality. It turns out that Michael cloned him to help with his research into the Hoffan drug and that he has been hoping for a rescue for almost two years. Learning that he’s not the ‘original’ causes him no end of confusion and grief.
* {{Expy}}: He's a simple, home-loving doctor who detests certain high-tech sci-fi gadgets with a passion and who always tries to find a humane solution over a military one. In Beckett's case, the technology he hates is powering Ancient weapons and spaceships as opposed to Franchise/StarTrek transporters, but his connection to Dr. [=McCoy=] is even lampshaded in-universe.
--> '''Sheppard''': He's worse than Doctor [=McCoy=].
--> '''Teyla''': Who?
--> '''Sheppard''': The TV character that Doctor Beckett plays in real life.
* TheHeart: As Elizabeth says in [[spoiler: her Eulogy]] he was a kind soul, and no one ever came to her with a complaint about him.
* HospitalHottie: He's quite a handsome doctor, which has not gone unnoticed in-universe or out.
%%* LovableNerd
* TheMcCoy: Often tries so hard to help everyone that he has to be reasoned with or even physically restrained to preserve his own safety (very important, considering he's by far the most qualified medical doctor/surgeon in the ''entire galaxy'', for quite a while).
* MeaningfulFuneral: [[spoiler: The first one we actually see on the show, though Dr. Weir does refer to other losses. We see his coffin carried through the gate, with the main cast as his pallbearers. ]]
* TheMedic: The head of Medicine on the Atlantis base, he is frequently fixing up our heroes after their many scrapes with death.
* PromotionToOpeningTitles: He was originally a recurring character but was given main cast status at the beginning of Series Two.
* YouLookFamiliar: Previously appeared in SG-1 as the Young Ernest Littlefield in "Torment of Tantalus".

!!Ronon Dex (Jason Momoa)

Satedan warrior. After the fall of his homeworld, the Wraith implanted him with a tracking device and hunted him for sport from planet to planet for years. Replaced Ford and became TheBigGuy.

Associated tropes:
* BackToBackBadasses: Once with Teal'c, and about 40 times with Sheppard and the rest of the team.
* BadassBeard: The most physically competent of Sheppards team, and he has some pretty nice facial hair.
* BadassFamily: According to Ronon, his grandfather taught him how to track and fight, in addition to how to use a triple-barreled shotgun when he was just ten years old.
* BadassNormal: Sheppard and [=McKay=] have the ATA gene. Teyla has the ability to sense and later sightjack the Wraith. What does Ronon have? A particle magnum, years of military service, and seven years of surviving being sport-hunted by the Wraith. He's capable of fighting Wraith in hand-to-hand combat and winning.
%%* TheBerserker: Ronon ''loves'' violence, to the point of it inducing the altered state associated with this trope.
* TheBigGuy: He is played by Jason Momoa, who is is 6'3'', and does most of the heavy hand to hand combat for the team.
* CelibateHero: It's mentioned that he gets a [[FemaleGaze lot]]'' of [[EatingTheEyeCandy attention]] from the female base personnel on Atlantis, but the only woman he displays interest in is Keller, at least until she tells him she's interested in someone else. When Sheppard once asks him if he's interested in anyone, he admits it's too soon, despite having lost the woman he loved over seven years ago. He meets Amelia Banks when she comes round from a Wraith stunner nearly as fast as he does and then helps him kick Wraith ass in hand-to-hand combat. The finale gives the pair a MaybeEverAfter.
* CrusadingWidower: Although flashbacks in "Sateda" imply he was in a relationship with Melena, the hospital worker who perished in an explosion during the fall of their homeworld. "Sunday" reveals they were living as a married couple when he tells Sheppard that he wasn't married but was "close enough".
* DreadlockWarrior: They became such a signature look that when Momoa cut them off in season 5, the producers made him wear a wig.
* EnemyMine:
** Subverted in "Michael". Despite the eponymous character having lost his memories of being a Wraith, believing himself to be a amnesiac soldier, Ronon ''still'' remains completely hostile to Michael throughout the episode and repeatedly looks for even the slightest excuse to try to kill him.
** Played straight in an alternate reality shown in "''The Last Man''", where Ronon and Todd become BackToBackBadasses, teaming up in order to destroy a Wraith hive and sacrificing themselves in the process.
* FantasticRacism: While no one in the Pegasus galaxy, save for the [[BrainwashedAndCrazy worshippers]], like the Wraith, Ronon ''despises'' them, albeit for good reason. When the team encounters the seemingly innocent and benevolent Elia, Ronon is never anything but hostile towards her, insisting that she's a killer and a monster just like the rest of her species. Even a human, amnesiac Michael got nothing contempt at best and outright hatred at worst from Ronon, which leads them to particularly despise one another after Michael reverts. He manages to get this under control in later seasons, though, to the point of being willing to work with Todd without constantly trying to kill him.
%%* HairTriggerTemper: A very very ''very'' '''VERY''' short temper.
* TheHunterBecomesTheHunted: He hunted his Wraith pursuers just as much as they hunted him.
* JerkWithAHeartOfGold: Ronon may not have the best matters and is quick to say whatever is on his mind, but he's deeply loyal to Sheppard and is capable of showing a softer side.
* KnifeNut: Only three things are infinite: The universe, human stupidity, and [[http://www.youtube.com/watch?v=1q0f6qxhOJI Ronon's supply of hidden knives]].
-->'''Lt.Col. Sheppard:''' How many of those do you have?
-->'''Ronon:''' How many do you need?
* MeaningfulName: "Ronon" is pronounced like "ronin"--the term for a masterless, wandering samurai. Given his backstory, his situation when he meets the Atlantis team, and his fondness for blades...
%%* TheMcCoy: Often, in a very bloody-minded way.
* MrFanservice: Momoa won Hawaii's Model of the Year in 1999
* MultiRangedMaster: There probably isn't a weapon type in existence that Ronon can't immediately pick up and use. He is shown as being a very competent wrestler/grappler as well.
** He does seem to have a bit of difficulty with the railguns on the ''Daedalus''. Console-controlled weaponry doesn't seem to be his thing.
%%* PerpetualFrowner: Rarely smiles, but it's worth it when he does.
* ProudWarriorRaceGuy: The Satedan's were so good at combating the Wraith that they decided to wipe them out rather than continue culling them, just to be safe. They frequently have tribal style tattoos, and an intensely strict code of honour. Ronon frequently boasts about how good the Satedans are at fighting.
* RevolversAreJustBetter: His trademark energy pistol is shaped much like a revolver, and its energy cell is swapped out in a manner similar to break-action revolvers. He sticks with it despite the [[MoreDakka considerably greater volume of fire]] that the more standard issue Earth-made [=SMGs=] that the rest of the excursion teams prefer.
** It helps that it has variable output levels, ranging from stun to hilariously lethal. It is one of the only weapons that can kill one of Michael's super-hybrids with a single shot - they're otherwise capable of tanking an uncomfortably large amount of P90 fire before going down.
* ShellShockedVeteran: Due to the fall of Sateda, the annihilation of his race at the hands of the Wraith and witnessing the death of his lover right in front of his eyes, before being forced to spend over seven years as a Runner.
* ShutUpHannibal: Talking too much, for villains, tends to end with a mouthful of gun.
* StunGun: His pistol does have a stun setting, though he often needs to be reminded to use it. Ronon prefers to keep it set at the [[TheresNoKillLikeOverkill highest kill setting possible]], particularly when dealing with Wraith.
* TheDeterminator: If he has to drive the Wraith to extinction all by himself, he has absolutely no problems with doing exactly that. Sometimes he has to be reminded that he's not alone any more and that he does have team mates who are willing to help him fight the Wraith.
* TraumaCongaLine: Was raised like everyone in the Pegasus galaxy under the constant threat of the Wraith. When he was in his twenties, his planet was overrun, his 'wife' was killed in front of his eyes, and he then spent the next 7 years being used as a Runner for the Wraith in mock hunts. During this time he was lead to believe his entire race had been destroyed. He later discovered that some had survived, but many of them had become drunks and mercenaries. Some of his closest friends had even allied themselves with the Wraith. Poor guy can't catch a break.

!!Dr. Jennifer Keller (Creator/JewelStaite)
Replaced Beckett as chief medical officer for the last two seasons.

Associated tropes:
%%* HiddenDepths
* HospitalHottie: becomes the new head of medical, and is played by the adorable Jewel Staite
* ImprobableAge: She's named the head of the expedition's medical team at the ripe old age of ''twenty-six''. She does mention in one episode that she was forced to sacrifice her childhood to do it and that she does have regrets about that.
* TheLoad: Freely acknowledges being this in "Missing", although by the end of the episode she manages to take a few [[TookALevelInBadass levels in badass]] at least.
* LoveTriangle: While Ronon and Rodney assume they're going to be in one and make a gentleman's agreement behind her back to let the best man win, it doesn't interfere with their personal relationship. Keller herself puts a stop to it a few episodes later as soon as she realises Ronon may be getting the wrong impression from her friendship, telling him she's interested in someone else. He immediately stops pursuing her, although it takes Rodney much longer to figure out he's won... not because he thinks Keller doesn't want him, but because - despite knowing that - he still has trouble asking her on a date until she tells him to just call his invitation a date.
* TheMedic: Takes over as the head of medicine after [[spoiler: Carson's death]].
* PromotionToOpeningTitles: Season Five.
* TeenGenius: Supposedly how she got the head doctor's job so young.

!!Colonel Samantha Carter (Creator/AmandaTapping)

{{Transplant}} from ''Series/StargateSG1''. Replaced Weir as head of the Atlantis Expedition for Season Four.

Associated tropes:
* ActionGirl: Though she doesn't get to show off her combat talents much anymore.
* BadassBookworm: Carried over from ''SG-1''. Carter's a genius and a ColonelBadass to boot.
* HotScientist: Which is why [=McKay=] has such a thing for her.
* TheKirk: Pulls this off sometimes, despite having an extremely hard science background like [=McKay=]
%%* MacGyvering
* SeenItAll: Often lampshaded.
* [[TheSmartGuy The Smart Girl]]: Overlapping with TheLancer.
%%* TheSquadette
%%* OmnidisciplinaryScientist
* {{Transplant}}: From ''SG-1''.

!!Richard Woolsey (Creator/RobertPicardo)

A high-ranking IOA operative, who primarily performed reviews of both Stargate Command and Atlantis and made reports back to the IOA committee. Due to his being a bureaucrat and his job necessitating judging the actions of the main characters, he is not the most popular person in the Stargate program. Despite this, he is known as a fairly reasonable bureaucrat, and is willing to forgive some rule-bending if the results are satisfactory. Succeeds Carter as leader of the Altantis Expedition in Season Five.

For tropes applying to him in SG-1, see [[Characters/StargateSG1OtherAntagonists here]].

Associated tropes:
* BadassBoast
--> "I was Harvard Law Review. I was chief counsel of the US Army Corps of Engineers. Prior to that, I was an appellate advocate for Hartshorne & Slaughter, one of the most prestigious litigation boutiques in all New York City. Believe me, I can handle three tribal leaders with a stack of papyrus."
* BadassBureaucrat: Once he undergoes some loosening up, he uses his eminent skill in navigating bureaucracies for the betterment of the Atlantis expedition.
* BreakTheHaughty: Continuing his arc from SG-1, as he learns to take himself less seriously and know when to bend the rules.
* ButtMonkey: Nobody liked the fact that he replaced Carter, especially [[BadFuture Sheppard]]. None of them made any effort to hide this from him either. For a while he was bordering on being TheWoobie. Even Atlantis ''itself'' won't give the guy a break sometimes. There was a time the motion-sensing door of a conference room closed and decided to ignore his efforts to reopen it.
* CharacterDevelopment: Learns to bend the rules and become less of an ObstructiveBureaucrat during his time in command, continuing this character arc from [=SG1=]. The writers and producers referred to his arc as being one of redemption.
* CowardlyLion: When he was first introduced. He spent most of his time hiding in a corner, until he [[TookALevelInBadAss took a level in badass]].
* GuileHero: He's no fighter, but as his BadassBoast and what he follows it up with show, Woolsey's one hell of a negotiator.
* HeelFaceTurn: Beginning in [=SG1=]'s PoorlyDisguisedPilot for Atlantis, when he realizes what an absolute tit Kinsey is, and arguably reaching a head in "Inquisition", when he goes into the field solo to defend the team.
* HiddenDepths: Becomes more apparent over the course of his time in command, particularly in "The Shrine".
* InformedAbility: He brags about his legal skills in the quote above, but he argues like an amateur trial lawyer, though he was able to convince the more reasonable judge.
* ObstructiveBureaucrat: Though he becomes one less and less during his time in command. His character arc basically spans from being an antagonist, to being merely ''less'' obstructive than any other bureucrat, to being annoying and nit-picky but generally benevolent towards the SGC and Atlantis Expedition.
* PetTheDog: Even before being made leader of the Atlantis Expedition, he had a few moments to show that he is really more pleasant than any other IOA bureaucrat, such as leaving out certain details in his Atlantis reports so as to not harm the Carters Command excessively.
* StraightMan: Always straight-laced and straight faced, despite all the insanity he encounters in his job.
* StrawCivilian: Eventually grows out of it, but it takes longer than for Weir. This probably has to do with the fact that he was cast as an antagonist on SG-1, so he needed to be given a redemptive arc.
* {{Transplant}}: Just like Rodney, he first appeared in a couple of ''Series/StargateSG1'' episodes.


[[folder:The Atlantis Expedition - Recurring characters]]

!!Dr. Radek Zelenka (David Nykl)
Atlantis' number two scientist. Exists primarily to discover impending Wraith attacks and take abuse from [=McKay=].

Associated tropes:

* {{Adorkable}}: A grown man, but he has his moments of adorable awe and scientific gushing. Especially [[https://www.youtube.com/watch?v=7CmaE4oILck&feature=player_detailpage#t=14 his Czech language description]] about how they brought up Atlantis to the surface and how happy he was to finally see the sun.
* BeleagueredAssistant: Is constantly put upon by Dr. [=McKay=] and often acting as his helper/second fiddle, despite the fact that he's still the ''2nd top scientist'' in an organization full of Earth's best and brightest.
* BilingualBonus: Speaks a lot of Czech.
* BreakingTheFourthWall: He says the following in Czech at one point: "Jesus, I can't work with these actors!"
* CatchPhrase: Well not exactly a catch phrase, but he does have a habit of storming away cursing in Czech when people irritate him.
* CrouchingMoronHiddenBadass: While under the influence of an amnesia virus (as was most everyone else), he successfully evaded the Marines and ''took one out'' to boot.
* FakeGuestStar: He's one of the most frequently appearing characters, and one of the few recurring faces to last over all five seasons, but Zelenka never makes it to the opening credits.
* {{Foil}}: Is often put in scenes with with [=McKay=] to make him appear both smarter, and crabbier. He's also very nervous about off world travel, which [=McKay=] often seems to be, but once Zelenka is around we realise that [=McKay=] is actually way more game for the action stuff than most of the scientists.
* ForeignCussWord: His swearing in Czech when he's annoyed and frustrated.
* ForeignLanguageTirade: Has a habit of bursting into one of these when annoyed. Frequently accompanied by him throwing his hands up in the air and storming off.
* GeniusDitz: Can come off as a bit forgetful and comical and is often proven wrong my [=McKay=]. But then its easy to forget, he is the number 2 scientist on the whole base, as [=McKay=]'s second in command.
* GrumpyBear: Can give [=McKay=] a run for his money with his all too frequently heard grumbling.
* HomelessPigeonPerson: Is a major pigeon enthusiast, having raised pigeons back on Earth.
* TheKlutz: He's not ''that'' big a klutz, but it is noticeable.
* PermaStubble: He didn't even shave for Carson's funeral.

!!Major Evan Lorne (Kavan Smith)
Atlantis' military second in command. Joined the expedition in Season Two.

Associated tropes:
* DeadpanSnarker: At times.
* FakeGuestStar: He's a common sight from season 2 on, but he stays a guest star for the entire series.
* HeroOfAnotherStory: He first appeared in SG-1, then he popped up now and again afterwards.
* HiddenDepths: One episode reveals him to be a professional-quality landscape painter, though the fact all his landscapes are of highly classified alien facilities means it's doubtful he'll ever be allowed to sell them.
* MajorlyAwesome: A major and a badass.
* MauveShirt: Security personnel who managed to survive to the end of the series.
* NumberTwo: He's implied to be second-in-command of the military personnel, but he is not TheLancer.
* SixthRanger: Joins the expedition in season 2, becoming a regular face from then on.
* {{Transplant}}: First appeared in the ''SG-1'' episode "Enemy Mine".

!!Colonel Steven Caldwell (Mitch Pileggi)

Commander of USAF starship ''Daedalus''. Not officially a member of the expedition, but definitely someone they can always depend on.

Associated tropes:
* BaldOfAwesome: Bald as a cue ball, but still a badass commander.
* ColonelBadass: A colonel and commander of the CoolStarship ''Daedalus''.
* DevilInPlainSight: [[spoiler: See Driven To Villainy, below.]]
* DrivenToVillainy: [[spoiler: Thanks to the Goa'uld spy symbiote implanted in him against his will. He gets better after it's excised, though.]]
* FakeGuestStar: He appeared on a more or less regular basis in season 2, yet never made the leap to the opening credits.
* HeroOfAnotherStory: Commander of a starship which travels between the Milky Way and the Pegasus Galaxy, he pops up as a supporting character on both ''Atlantis'' and ''SG-1''.
* ReasonableAuthorityFigure: [[spoiler:Once that pesky Goa'uld's gone, anyway.]]

!!Colonel Abraham Ellis (Michael Beach)

Commander of the ''Apollo'' another USAF starship and sister ship to the ''Daedalus''.

Associated tropes:
* BaldOfAwesome: Sure he's an ass, but you can't deny he gets shit done.
* ColonelBadass: Dropping six planet-buster sized nukes on the Replicators certainly qualifies him as one.
* HeroOfAnotherStory: Being the commanding officer of a 304-class battlecruiser means he's dealing with any problem that the IOA or Stargate Command needs him to.
* JerkAss: Not the nicest of the military leaders.
* ReplacementFlatCharacter: Takes up the banner of the unlikable military leader after Colonel Caldwell [[spoiler: gets his symbiote removed]] and loses most of his JerkAss qualities.

!!Chuck (Chuck Campbell)

Canadian technician who works in the Atlantis Gate room.

Associated tropes:
* DeadpanSnarker: Feels like Woolsey doesn't show him the respect he deserves and snarks about it.

!!Sergeant Bates (Dean Marshall)

Atlantis' head of security in Season One. Later discharged and became an IOA agent.

Associated tropes:
* AntiHero: He's not evil, just an ass.
* TheBusCameBack: He shows up again as an NID agent after being PutOnABus in season 2.
* FantasticRacism: Makes it very clear he doesn't like the Athosians.
* {{Jerkass}}: He must have written the book on being a jerkass.
* ProperlyParanoid: Immediately comes to the conclusion that Teyla was giving away their position to the Wraith. He actually was ''right'', sort of. Turned out her father's pendant had been implanted with a tracking device.
* TheStoic: To the point of being ''more'' grim than '''Ronon Dex'''!

!!Dr. Peter Grodin (Craig Veroni)

British scientist who runs the control tower. KilledOffForReal at the end of Season One.

Associated tropes:
* KilledOffForReal: [[spoiler:Killed when the Wraith destroyed the Ancient defense satellite he was on.]]
* MissionControl: In season 1, he served a similar role to that of Sergeant Harriman from ''SG-1''.
* SacrificialLion: His death proves beyond a doubt how serious the threat from the Wraith really is.
* YouShallNotPass: [[spoiler:Tried using Ancient tech to stop the Wraith in their tracks, but he was only able to take out one ship out of three.]]

!!Dr. Kate Heightmeyer (Claire Rankin)

Expedition psychologist. KilledOffForReal in Season Four.

Associated tropes:
* AllPsychologyIsFreudian: Averted. She more often investigates stress and fear as being the root causes for peoples problems, rather than deep dark family pasts.
* AllTherapistsAreMuggles: Doesn't seem to realize she's in a world where time travel, alternate realities and people being taken over by alien entities are a ''regular'' occurrence. No, clearly if someone is experiencing something weird, it's all in their head.
%%* DeadSerious
* HollywoodPsych: And not very good at it either.
* TheShrink: The expeditions therapist, she occasionally councils our heroes when the episodes have a psychological component to them.


[[folder:The Wraith]]

!!"Michael Kenmore" (Connor Trinneer)

First Wraith on whom the expedition tested their new gene therapy to turn him into a human. It worked. [[HalfHumanHybrid Partly]].

Associated tropes:
* AntiVillain: Averted. Despite what Michael is always saying, he was a monster even before the other Wraith rejected him, which he proved in his debut episode; Teyla was one of the only people who treated the human Michael with any kind of kindness, yet when Michael started reverting into a Wraith, he kidnapped her with the intent of feeding on her. His actions over the course of his other appearances destroy any sympathetic qualities Michael has, and in the end, he's driven by little more than spite.
* AxCrazy: Once he settles as a Hybrid, Michael is clearly a bloodthirsty monster who revels in killing his enemies.
* BigBad: The closest that the show ever got to a singular main antagonist. He fills the role best in season 4.
* DisneyVillainDeath: [[spoiler: After a brief fight, Teyla throws him off the highest tower in Atlantis towards the end of the final season.]]
* EvilIsPetty: Michael and Ronon always hated each other, but in "Enemy at the Gates", Michael is willing to take a moment (while the city is rigged to explode, no less) to behead an unconscious Ronon just for a trophy. Ironically, this wound up saving Michael's life, as Sheppard activating the Stargate before Michael could wound up killing the Hybrids Michael brought with him, and would have killed Michael as well if he hadn't stopped to try and kill Ronon.
* EvilutionaryBiologist: Tried to kill almost everybody and turn the rest into an unstoppable army of destruction.
* FreudianExcuse: He was betrayed by both humans and Wraith. No wonder he went completely crazy. Deciding to wipe out both races, on the other hand, is less reasonable.
* FromNobodyToNightmare: From run of the mill Wraith to genocidal lunatic and would-be galactic conqueror.
* HalfHumanHybrid: The Wraith are already the result of Iratus Bugs feeding on humans. After Michael has been treated with the Atlantis-designed retrovirus that makes him temporarily human two times and organizing his own experiments on hybridization, he ultimately becomes some sort of hybrid in between Wraith and humans (three-quarter human hybrid?). Notably, he doesn't need to feed anymore.
* HeelFaceBrainwashing: He was the guinea pig for the Atlantis expedition's gene therapy treatments, testing whether or not they could transform a Wraith into a full-fledged human. As part of the experiment, they also gave him a fictitious backstory as a team member who received amnesia from an injury. Michael is ''not'' happy when he discovers the truth.
* {{Hypocrite}}:
** Michael is ''constantly'' treating the Atlantis team like monsters because they turned him into a human without his consent. He goes on to convert thousands of humans into his Hybrid army without ''their'' consent.
** He claims to care for Teyla and her baby. As he proves at the end of "Enemy at the Gates", he's perfectly fine with leaving both of them to die out of raw spite.
* KilledOffForReal: [[spoiler:Finally slain by Teyla in season 5]].
* NeverMyFault: Michael blames himself for exactly ''none'' of his own atrocities. To him, the Atlantis team is at fault for everything he does, due to using him as a genetic experiment. While they did set Michael on the path to what he became, in the end, it was Michael's own rage and obsession with revenge that resulted in the most horrific of his crimes.
* NiceJobBreakingItHero: Was your run of the mill Wraith until Atlantis tampered with his genes ([[{{WhatTheHellHero}} twice]], [[IDidWhatIHadToDo without his consent]]). Pretty much turned your average Wraith into a savage Hybrid with a vision of genocidal vengeance and the pure hatred to pull it off. Big mistake, to be sure, but, as Beckett, Weir, and Sheppard point out, they had to try, considering that the Wraith possess every major advantage over Atlantis (with the possible exception of technology, since most of Atlantis' really high-tech goodies are either Ancient or Asgard).
* NotSoDifferent: Likes to think that the Wraith and Atlantis team are basically the same, and seems to say it at least once in every episode he appears in.
** He's also willing to commit the same acts he blames the Atlantis Expedition for (Such as subjecting people to gene therapies and experiments against their will), to other people, and on much wider scales to boot.
* ThenLetMeBeEvil: Was a Wraith who the protagonists forcibly converted into an amnesiac human. His introductory episode has the characters mistreating him for no clear reason, before he realizes that he's a TomatoInTheMirror and breaks out to return to his people... but they won't accept him either, since he's still partly human. He desperately returns to the protagonists and offers valuable aid, just begging them that they don't de-Wraithify him again. They do, and when he recovers, he's fed up of saying WhatTheHellHero, and he snaps completely and becomes an EvilutionaryBiologist.
* OmnicidalManiac: Michael's endgame is to wipe out all Wraith as revenge for them rejecting him, and intends to end humanity in the Pegasus galaxy as well, either by killing them with the Hoffan drug or converting them into Hybrids to serve him. However you slice it, it's genocide.
* VillainousCrush: For Teyla, possibly the only being ever who showed him compassion, once. This didn't stop him from trying to kill her a half-dozen times throughout the series and trying to harvest her child, however.
* WhatTheHellHero: Calls the heroes out on their actions, repeatedly.
* WoobieDestroyerOfWorlds: Not ''remotely'' sympathetic, but he counts. Being forcibly converted into a human (twice) and rejected by the Wraith turned Michael into an embittered psychotic hell bent on genocide and galactic domination.

!!"Todd" (Christopher Heyerdal)

A Wraith scientist who was imprisoned alongside Sheppard and was made to feed on him. Different than other Wraith in that he actually keeps his end of the bargains and isn't particularly malicious towards the expedition, finding that they make useful temporary allies.

Associated tropes:
* AffablyEvil: Well, depending on the definition of "evil", but nails the "affably" part pretty well.
* BackhandedCompliment: Agrees that [=McKay=] is highly intelligent... ''for a human.''
* ChronicBackstabbingDisorder: Sort of. He will invariably screw Atlantis over the moment that the tide might turn in his favour, but unlike almost every other Wraith, he ''will'' also keep to the letter of his bargains. Unfortunately, he's also very good at LoopholeAbuse. This is pointed out by Sheppard when he explains that dealing with Todd feels like walking around with a live grenade in your pocket.
* DeadpanSnarker: If he wants to, he can be pretty snarky.
--> '''Ronon''': We're just gonna blow it up.
--> '''Todd''': ''(resigned)'' Naturally. ("The Last Man")
* DefectorFromDecadence: When the expedition came up with a way to remove the Wraith need to feed on humans, he was willing to try it. Didn't quite work out, though, mostly because he wasn't willing to do it on their schedule.
* EnemyMine: Isn't afraid to turn to the Atlantis crew if they have a mutual enemy, but often does it to suit his own interests...
* ExactWords: He'll stick to his bargains, no matter what, but you'd best be careful to make sure you're clear on what he actually agrees to.
* FriendlyEnemy: Comes across as one to Sheppard and [=McKay=] when they're [[EnemyMine forced to team up.]]
* GeniusBruiser: He's an exceptional fighter and a brilliant scientist, being implied to be every bit as smart as [=McKay=] - certainly, smart enough to hack his systems.
* HandshakeRefusal: Intentionally invoked this by offering his hand forward to Woolsey and causing everyone in the vicinity to immediately raise their weapons. Turns out he was just [[{{Troll}} screwing with them]].
--> '''Todd''': *''Laughs''* Just a bit of Wraith humour.
* HonorBeforeReason: Most of the time, he'll go to any lengths to keep his bargains, even against his own better judgement.
* LovableTraitor: While he's inevitably going to turn on the Atlantis expedition at one point or another, his AffablyEvil tendencies, the fact that it's NothingPersonal,[[DeadpanSnarker sense of humour]] and NobleDemon leanings make him one of the most likeable characters in the cast.
* MeaningfulName: Todd is an old English name meaning 'fox' (as in, cunning as a fox), while 'Tod' is a Scottish nickname meaning 'clever or wily one'. Both fit him like a glove.
* NobleDemon: He's still a villain, but Todd is actually willing to work with humans, and once he makes a bargain with you, he tends to keep it. He also spends most of his introductory episode philosophising about the nature of being a Wraith, and how, like humans, they do have emotions and feelings. Really highlights the 'noble' part of the trope.
* NothingPersonal: Genuinely has nothing against the Atlantis Expedition, and seems to get on with them better than his fellow Wraith. And when he does inevitably stab them in the back, it's just business.
* ReallySevenHundredYearsOld: It's revealed in "The Lost Tribe" that Todd is over ''10,000 years old''. Given [[ChronicBackstabbingDisorder the nature of Wraith society]], the fact he's lasted that long makes this a rather impressive feat.
* SoWhatDoWeDoNow: In "First Contact", agrees that while the gene-therapy will mean they are free from their reliance on Humans as food, it's the end of a ''millennia'' of Wraith society and culture, particularly their self-image of themselves as the SuperiorSpecies.
--> '''Dr. Keller''': It's for your benefit too. If you don't have to rely on human feeding, the war would be over.
--> '''Todd''': Perhaps... But then what would we do? ''Who'' would we be?
* WorthyOpponent: Sees the Atlantis crew and Sheppard in particular as one.


[[folder:The Genii]]

!!Cowen (Creator/ColmMeaney)

Associated tropes:
* ChronicBackStabbingDisorder: You'd think the Atlantis team would've learned not to believe a word he says.
* PlayingBothSides: He tried pitting the Atlantis team against some rebels. It didn't end well.

!!Acastus Kolya (Robert Davi)

Associated tropes:
* ArchEnemy: To Sheppard.
* BadassLongcoat: When not in uniform.
* FauxAffablyEvil: Usually.
* ShowdownAtHighNoon: A version B with Sheppard. [[spoiler: [[KilledOffForReal He lost.]]]]
* TheUnfettered: Even his own strike team is put off by his actions.
* VillainRespect: Regards Sheppard as 'a remarkable soldier'.

!!Ladon Radim (Ryan Robbins)

Associated tropes:
* TheChessmaster: Seems to be a requirement for Genii leaders.
* HeelFaceTurn: [[spoiler: First time it was a ruse, second time seems to be genuine.]]
* MoralityPet: [[IllGirl His sister]].
%%* RebelLeader
* TheSmartGuy: Of Kolya’s team.