A long-runningHistorical Fantasyfranchise about a rare collection of beings known as The Immortals. They can live forever, but with a catch — When one Immortal takes the head of another, the winner gets the loser's power, while the beheaded Immortal is dead for good.This power exchange manifests as an explosion of energy called The Quickening, in which everything within 50 yardsblows up. Drifting invisibly through the history of the world, they battle each other in swordfights until only one Immortal remains; the last one standing gets "The Prize", the exact nature of which is unknown.The above paragraph contains the agreed-upon facts. Beyond that, things get a bit fuzzy. Calling it "a canon" is being charitable. More accurate would be "an assortment of films, sequels, spin-offs, and remakes, all with only one connecting concept and made with very little regard for continuity." But hey, who's counting?The various film and television incarnations of Highlander include:
It all started with a single film: Highlander (1986) introduces Connor MacLeod (Christopher Lambert), an Immortal born in the Scottish Highlands. In a series of flashbacks, Connor is mentored by Juan Ramírez (Sean Connery), a wise Immortal who teaches him the basics before being beheaded by Connor's sworn enemy, the Kurgan (Clancy Brown). The film's other half takes place in Eighties-era New York City, where all the world's Immortals, whose numbers are now growing thin, are drawn together to battle to the last manin a final showdown dubbed "The Gathering". By the end of the film, Connor and the Kurgan are the only Immortals left. Connor kills him in a Final Battle, saves the girl (Roxanne Hart), and gains The Prize. This film is currently undergoing preparations for a remake.
Highlander 2: The Quickening (1991) flash-forwards to the year 2024. Connor is back, having parlayed The Prize (the ability to read the minds of all the world's mortals at once) into building a vast planetary force field to replace the broken ozone layer; the downside is that the entire planet is now permanently dark. In other news, the Immortals are revealed to be space aliens from planet Zeist, while the evil General Katana (Michael Ironside) has come to Earth to kill Connor off. While it enjoyed a much bigger budget, it was panned by critics and scorned by the fans. It should be noted however, that these bizarre changes were due to Executive Meddling (the film ran out of budget halfway through the shooting). Several years after the theatrical screening, the director brutally re-edited the film into The Renegade Cut for release on home video — twice. The edit had all references to Zeist removed. The troubled history of the film's production is explained in this mini-documentary.
Highlander: The Series (1992-1998) follows the life of Duncan MacLeod (Adrian Paul), an Immortal who happens to be a cousin of the movies' Connor MacLeod (then again, who isn't?). The series was originally intended to be a prequel to the first movie (resolving the continuity issues the screen was plagued with), being about the larger body of Immortals in the time of the Gathering coming together and doing combat in the large scale ladder match that would ultimately lead up to Connor MacLeod versus the Kurgan. After the first season it became clear that the Series was doing quite well in its own right. This made the canonicity of the original film (and the inevitable necessity of Duncan's death) problematic. The first film as straight canon began to fade in the Series continuity. Currently in Series fandom the original film is considered to be canon excepting where it is contradicted by something in the Series or the films that were based on it, which take priority. Likewise the parts of the first season which are rooted in the original film are also Loose Canon (such as strong references to the Gathering and so on). The series also introduces the Watchers, a mysterious group which has observed and chronicled Immortal activities throughout history. The series coined the term "The Game", which refers to the Immortals' ongoing battle. For the most part it was well-received and internally consistent.
Highlander: The Final Dimension (1994) — alternatively titledHighlander III: The Sorcerer — ignores the second film and the TV series, making it a direct sequel to the original film. It turns out that The Kurgan was not the only savage Immortal out to claim Connor's head, as Kane (Mario Van Peebles) and two Mooks were trapped in a cave for 400 years and so didn't quite make it to The Gathering. The Gathering did happen anyways, though, as Kane and company were considered by whatever governs Immortals to be "dead" as they were trapped in a cave under a rock slide with no air, allowing them to be resurrected as if the universe were saving them for a sequel. Despite following a similar formula to the first film, Highlander 3 was better received than The Quickening.
Highlander: Endgame (2000), the fourth film to be made, followed on from the TV series continuity but attempted to incorporate the events of the original film into its backstory as well (although ultimately it ended up contradicting both). Duncan and Connor MacLeod team up to face Jacob Kell (Bruce Payne), a scenery-chewing Immortal with a massive grudge against Connor. Endgame's poor editing left fans confounded and casual viewers completely adrift. Like The Quickening, Endgame saw an extended cut which gives it at least some semblance of order. Notable mainly for being the one where Connor is Killed Off for Real..
As it turned out, Wingfield wasn't burned out on playing Methos just yet. In 2008, he and two other Highlander: The Series alumni (Jim Byrnes and Elizabeth Gracen) released a Short Film entitled Reunion, depicting the characters 10 years after the series finale. Wingfield shot the entire episode in his house (and it shows), but as far as send-offs go, it still beats The Source.
And apparently someone has bought the rights to (insert drumroll here) remake the originalHighlander. The script for the remake was written by the screenwriter of the Twilight films. Yay?*
In all fairness, she also works on Dexter as a writer-producer.
Highlander in other media:
Highlander: The Animated Series (1994-1996) mostly ignores the established canon, though Connor MacLeod and Ramirez (from the original film) both make an appearance. It takes place in a post-apocalyptic world where the Immortals have agreed to a truce. Once everyone else has taken the oath, however, a jerkass Immortal named Kortan takes advantage of the binding truce to become ruler of Earth. Several centuries later, new Immortal Quentin MacLeod is born. He is not bound by the oath, making him the sole warrior able to face Kortan. His mentor Vincente Ramirez leads him on a quest to find the other Immortals and receive their knowledge, before Kortan does. Tagging along is Clyde of the Dundee, Quentin's adoptive sister. The series eventually spawned a game Highlander: The Last of the MacLeods for the ill-fated Atari Jaguar CD. Seriously.
In 2001, a Flash animated fan series entitled The Methos Chronicles was made available online. The eponymous character is voiced by Peter Wingfield, reprising his old role from the TV series.
Highlander: The Search for Vengeance (2007) is an Anime unrelated to any of the films or other adaptations. It starts in AD 125, somewhere in Roman Britain. A small village is wiped out by Roman troops led by Immortal Marcus Octavius. He is a Well-Intentioned Extremist who thinks an Empire is necessary to build a utopian society. This battle leads to the rise of another Immortal, Colin MacLeod. He is mentored by Amergan, the ghost of a druid. Colin devotes his life to seeking vengeance by killing Octavius. The film follows them in brief scenes taking place during a period of two millennia. The film was a critical hit and is thought to have a far more complex plot than most of the live-action sequels.
They also announced a videogame for the current generation a while ago, and after numerous release pushbacks, it was set to be released but was cancelled in late 2010.
After the End: A strangely popular setting for Highlander spinoffs, for no explicable reason. Highlander II, Highlander The Source, Highlander: The Search for Vengeance, and the animated series all occur in post-apocalyptic settings. It's justifiable in The Search for Vengeance and the animated series, as they take place in the far future and immortals are one of the few likely to survive the end of the world, but less so in the case of The Quickening and The Source; both take place Twenty Minutes into the Future and have most normal people living through the apocalypse as well.
Alternate Continuity: There are at least three — the (first three) films, the TV series (plus spinoffs and sequel movies), and the animated series. Of course, these are the broadest possible divisions as each one contains multiple Retcons within themselves.
All There in the Manual: While the flashbacks do supplement some of the information, the DVDs (at least, for the Series) have the Watcher Chronicles, which include date of birth/first death, first teacher, background on the immortals, notes from the watchers, and information on the different swords used.
Arbitrary Scepticism: Completely averted in the first movie. A police detective investigates Connor Mac Leod, uncovers the fact that he is apparently immortal and has been faking his own death every thirty years or so for centuries, and his response can be summed up as huh, well ain't that a hell of a thing.
Artistic License - History: The original film is unusual in getting the fact that Masamune was a swordmaker rather than a sword correct, but then claims that Masamune made Ramirez's katana thousands and thousands of years before he was born or katanas even existed.
The existence of katanas is lampshaded: the fact that katanas were not around at the time is actually used in a major plot point! Unfortunately, Masamune's time-hop is left unexplained.
The maker explicitly only ever made one, for his son-in-law, and Masamune is a surname. The implication is that it was a distant ancestor.
Artistic License - Physics: During the final battle in Endgame, Kell knocks Duncan's sword out of his hands, sending it tumbling off a catwalk. Duncan leaps over the railing and jumps after it, grabbing it in mid-air.
Kortan, the villain of the animated series, emits a bizarrely strangled sounding Big No after Quentin MacLeod is stabbed by one of his henchmen, which activates Quentin's immortality.
Black and White Morality: Despite Duncan insisting that "There are no all good or all bad Immortals, we run the spectrum just like you," The series has a clearly defined sense of right and wrong, heroes and villains, and only blurs it on occasion.
Blessed with Suck: Immortality is presented as this more than a few times, especially when it comes to having mortal friends who will eventually either die of old age or get killed from hanging around with Duncan.
A general reason why Immortals never stay for too long in one place. (Shading into They Would Cut You Up in modern times.)
Canon Discontinuity: Highlander II: The Quickening. Parts of the plot of this film are so poorly received that numerous edits of the film have been released on DVD, and most of them completely ignore the "Zeist/Immortals are really aliens" sub-plot.
Some editions of Final Dimension' 'have it titled as Highlander 2''.
Cape Busters: In the series, rogue Watchers called Hunters track and kill immortals, even on holy ground.
Captain Obvious: The Kurgan: "I am in disguise. This way, no one will recognize me."
Captain Ersatz: The X-ternals, a group of mutants in Marvel's X-Men comics, were obviously based on the Highlander concept: they had powers that could only be accessed after they "died" and came back to life. Cannonball of the New Mutants turned out to be one. All of them were wiped out by Selene (herself an ancient immortal.) Rumor is that Marvel decided to get rid of them before they got sued.
Chaotic Stupid: The Kurgan's joyride-rampage through New York in the first movie, wherein he drives down the wrong side of the road, singing New York New York while playing chicken and running over pedestrians, served no purpose other than a hilarious classic moment in comedy history.
Considering he's fricking immortal and he was just trying to scare the shit out of Brenda anyway - it also serves to confirm to the audience that he isn't just a brutal murderer, he's fricking insane, it's kinda justified. It's still hilarious. No such excuse for the same scene in Highlander 3, mind.
The same goes for the subway scene in Highlander 2, where Katana somehow gets a New York subway train to go over 400 mph and ends with him plowing the train through a wall onto the street. For no reason - this is the very first thing Katana does when he gets to Earth.
Combat Pragmatist: If the fight's going against him, Methos is not above feigning helplessness (such as pretending to slip) and then, when his opponent moves in for the kill, drawing a hidden dagger and stabbing him.
In one of Highlander: The Source's only intelligent moments, the Big Bad is shown wearing heavy armor around his neck designed to make decapitation almost impossible. Because this idea makes far too much sense for such a terrible movie, the resulting Quickening of his first battle makes it vanish for no reason, and he spends the rest of the film unarmored.
Cult Soundtrack: The soundtrack to the first movie, with songs by Queen (and orchestral music by Michael Kamen), is a cult favorite among glam rock fans, fantasy geeks, and Dungeons & Dragons players. "Princes Of The Universe" is regarded as the defining song of the franchise with "Who Wants To Live Forever" as a close second. Most is available in Queen's album A Kind of Magic (the title track, inspired by a particular line, even plays during the credits).
Immortals can hold blood feuds and grudges that last centuries - and usually the same guys fighting throughout history.
Think about that for a second...if you were immortal and made an enemy of a fellow immortal, spent centuries tracking them down to avenge yourself on them, only to find they got their head chopped off sometime last year, how would you feel?
Invoked in the anime. At one point, the Big Bad has the hero helpless (again) and at his mercy... and points out the vendetta's centuries old. Maybe it's time to get a hobby?
It's shown in Highlander: The Search for Vengeance that it doesn't necessarily have to involve blades to get the job done, so long as the head's gone. Such as a grenade shoved into an immortal's mouth.
Deranged Animation: Whatever the hell those demonic creatures were in the last quickening of the first film.
Died Standing Up: The Kurgan in the first film; his beheaded body salutes Connor before falling over.
Disproportionate Retribution: Jacob Kell spent many centuries killing everbody Connor ever cared for. The reason he did this? Because Connor killed Jacob's foster father in self-defense. The same man who'd murdered Connor's OWN MOTHER.
And Kalas, due to a throat injury, though his voice has more of a raspy quality to it.
Exposition Of Immortality: Let us count the ways that this happens. No, let's not; there's too many of them. The first film is a principal source, between MacLeod's many memories of times gone by; saving Rachel from Nazis, dueling drunk in 17th Century England, or the sizable collection of antiquities he's picked up over the years from their original time period. Ramirez' sword is a particular example, especially since it's older than it should be.
Facial Composite Failure: The news media, unaware of The Gathering or what is happening, attributes each of the original film's beheadings to a single killer. The newspapers release a composite sketch of The Kurgan, dubbing him the "Headhunter".
Fair Cop: Brenda J. Wyatt, Forensics specialist for the NYPD.
Fake Nationality: Christopher Lambert (American, raised French-speaking Swiss) plays Connor MacLeod (Scottish). Sean Connery (Scottish) plays Ramirez (ancient Egyptian pretending to be Spanish). Clancy Brown (American) plays the Kurgan (early Russian or Ukrainian). Adrian Paul (English of Greek parentage) plays Duncan MacLeod (Scottish). However, Lambert pulls off a decent Scottish accent for Connor's early days, then puts on a deliberately vague "layered" accent for the present-day scenes, having lived all over the place. Brown doesn't attempt a Russian accent.
Brown's accent, after all, would be only hypothetical: temporally speaking, the Kurgans lie close to the source of the Indo-European language family itself, dating roughly 4000-5000 BC (and which today includes all varieties of Celtic, Romance, Greek, Slavic and Indo-Iranian languages).
The Kurgan was from a group of people called the Scythians, whose burial mounds were called kurgans. Extremely vicious people. But yeah, they were essentially early nomadic horse-riders from the steppes of Russia.
Although since, if you believe the second film, they're all aliens, the characters' supposed nationalities really becomes a moot point.
Notably, for Highlander 3 Lambert doesn't make even a token attempt at a Scottish accent for the scenes in Japan, which take place only a few years after the flashbacks in the first film. Likewise for the scenes in Endgame taking place during the flashbacks from the first film.
Although this may be justified as the Immortal style of swordplay is very different from the mortal's idea of "find a vital place and stab it." To an Immortal, there's only one vital place, and merely poking it isn't enough; you need a good, firm, unimpeded swing. Furthmore, the really old Immortals have an incredibly high tolerance for pain and stabbing or slashing barely slow them down. In fact Duncan himself seems very fond of disarming his enemy first before deciding to take their head or not. Conversely, Connor was only able to beat the Kurgan by wearing him out and inflicting enough minor wounds on him quickly enough that it slowed him down at the final moment.
Forging Scene: The third Highlander film has Connor's sword shattering, meaning he has to go home to reforge his Katana.
Hammerspace: In the series at least, this is where the Immortals appear to store their swords when not in use. It's referred to as "Katanaspace" by the fans.
Colin Macleod in the finale of Vengeance., who after 2000 years of atheism and mortally wounded, is about to witness his rival murder an entire city of innocents with a super-virus, hears the dying voice of his resurrected love calling to him from Heaven...
Hot Scientist: Brenda Wyatt the forensic scientist, Louise Marcus the environmental scientist, Dr. Alexandra Johnson the archaeologist. Connor seems to have a thing for sexy nerds.
I Am Not Shazam: Invoked: the name of Clancy Brown's character is not Kurgan. In fact, he has no name. Kurgan refers to the part of the world he came from, and characters refer to him as the Kurgan. Likewise, "Highlander" is not the name of the Immortals race, but a reference to Connor's (and Duncan's) Scottish origins.
I Am X, Son of Y: "I am Connor/Duncan/Quentin/Colin MacLeod of the Clan MacLeod."
Iconic Item: Connor's sword (given to him by Ramirez in the distant past) and Duncan's katana both count. In Endgame, Jacob Kell is always shown wearing a type of footwear with crucifixes on them (sandals in the 16th century, black shoes in the present).
Idiot Ball: General Katana carries one to complement his Villain Ball in Highlander 2. For no apparent reason, he sends a couple of assassins to Earth after MacLeod, then goes himself. Never mind that MacLeod won The Game years ago and had no intention of going back to Zeist - within less than a decade, he'd be dead by old age. Instead, the new arrivals make him immortal again, makes him young, and also alerts him ahead of time that he has to deal with Katana. One of the assassins even points out how pointless this is, and gets smacked for it. MacLeod practically spells it out for Katana what a huge, stupid, meaningless mistake stirring up this trouble really was.
Idiot Ball: Duncan's wedding flashback in Highlander: Endgame. Having previously discovered that his bride-to-be is a latent Immortal, Duncan stabs her through the chest on their wedding night without warning, triggering her immortality. Faith's horrified reaction is (ironically) the most plausible character moment of the entire movie.
Well, to be fair, "warning" isn't really going to make it much better if what he wants is to stab her to death. The real idiocy is thinking she would be fine with it, but he realizes quickly how stupid he had been with a My God, What Have I Done? moment immediately after the crime.
Even Duncan has an expression on his face that just screams "Who the hell is THIS moron?"
Katanas Are Just Better: They're the weapon of choice for every MacLeod, as well as Connor's mentor Ramirez. At various points in the series, Duncan did occasionally use a different type of blade, but the katana was his 'default' weapon. Subverted in Highlander: The Source where Duncan's katana is broken in half by the Guardian, and he goes into the final confrontation with a pair of knives. Could be partly justified by the katana's effectiveness as a cutting weapon; when the only way to kill someone is to decapitate them, a sword specifically designed for slashing comes in handy. Additionally the katana is a lot easier to carry around and hide in a trench-coat the way Connor did.
Discussed in the original, when Brenda carbon-dates the ivory in the handle of Connor's katana back to 500 BC, loooong before folded-steel katanas had been developed (heck, steel was new to the scene in India then). According to Ramierez, the sword was forged by Masamune (presumably an ancestor), and was probably the first steel katana ever made.
It is also worthwhile to note that while Connor and Duncan both prefer katanas, it is mostly for sentimental reasons. Other Immortals are shown to carry a large number of different types of sword. The ones that show up more than once aren't always using the same sword from episode to episode either.
Large Ham: The Kurgan, Ramirez, the Guardian, Katana.
Leaning on the Fourth Wall: In The Quickening, after Katana manages to make a train go over 700 miles per hour and crash through a wall, killing everyone aboard, he steps out, opening the door and seeming to look at the audience (Or maybe all the dead innocents offscreen, YMMV), he says "Last stop" and laughs.
Master Swordsman: Fridge Logic would imply that any Immortal who lives long enough would eventually have to become one, but the MacLeods, Ramirez, and Graham Hash (Ramirez's teacher) are explicitly referred to as such.
Mayfly-December Romance: Any love interest for an Immortal. Duncan and Amanda are both immortal, but they come and go over time, not willing to be attached to each other for centuries.
Many of the villains from Highlander: The Series count. In fact, when Kronos and Horton were Killed Off for Real the cast and crew were reportedly very bummed out.
The Messiah: "The Prize" in the animated series version is that when Quentin collects all the knowledge and powers of all the immortals gets to become this, having everything he'll need to lead mankind into a new golden age.
Mortality Ensues: In the original continuity, part of the Prize is the option to live as a normal human; Connor states that this is his intention at the end of Highlander. The Series stated that the last Immortal will be powerful enough "to rule this planet forever".
Then again, Ramirez had been around for so long that he probably learned how to pick up other accents and dialects quickly so that he could blend in easily with the locals (barring his attire of course).
Connor fits this as well. He's supposed to be Scottish yet speaks with an obvious French accent. This isn't as much of a problem in the modern day scenes or flashbacks to places other than Scotland (1783 Boston, World War II Germany, and of course France in The Sorcerer) where one can assume that by then Connor's accent may have faded due to learning other languages during his travels.
"The Quickening" is probably the second most parodied subtitle after "Electric Boogaloo". Roger Ebert spent a third of the televised review time complaining about how stupid a subtitle he thought that was.
These may seem unusual but actually make sense, as Endgame and The Source are actually set in the TV series continuity and so could be considered "separate" enough to warrant a change in title format. (Of course, Highlander 3ignores the existence ofHighlander 2, but let's not get into that.)
In the US market, Highlander 3: The Sorceror was titled Highlander: The Final Dimension, making it clear that removing the numbering from the titles was mostly an attempt to pretend Highlander 2 never existed.
Post Rape Taunt: Centuries after he rapes her, the Kurgan taunts Macleod that this is the reason his wife never told him about it.
Rape as Backstory: A bit, in the first movie. When Connor observes that Ramirez didn't quite behead the Kurgan, the Kurgan responds by saying that he killed Ramirez and "raped his woman before his blood was even cold." At the resultant Death Glare from Connor, the Kurgan figures out that Heather was Connor's wife; he proceeds to take way too much pleasure from realizing that Heather had never told Connor about her rape, and taunts him about it.
Connor almost seizes back that moment by thanking Kurgan for finally confirming his crime, which he always suspected anyway but which the shattered Heather refused to speak of.
Real Men Love Jesus: Both Connor and Duncan are astaoundingly still devout Catholics, in spite of the fact that the superstitious xenophobia of their Catholic kin is precisely what caused them them to be hated and feared exiles driven from their homes.
To be fair, they were pretty freaked out themselves with what was happening to them. They just don't seem to hold a grudge (maybe because they are devout Catholics) and, well, the "driven from their homes" part probably had less to do with the people being Catholic than the fact that both Connor and Duncan had somehow come Back from the Dead- it was the people who had the problem, not the faith.
Resurrective Immortality: Immortals can die just like anyone else, but their bodies then heal and they revive. And it can turn into a cycle if conditions are bad, which can lead to an insane immortal or at least an immortal with a huge desire for revenge.
Retired Badass: Duncan is almost always trying to retire from "The Game" to various degrees of success. On the one hand he probably has more immortal friends than any other, but he also has countless enemies who come looking for him too. He refuses to "hunt" other immortals unless they personally threaten those he cares about and even keeps a cabin on Native American holy ground he's been known to live on for very long periods of time.
Connor tried as well.
Darius and Brother Paul where Badasses who retired from the Game and into holy ground.
Satan: Ahriman, the supernatural Big Big of Season 6, is described as being the source of all evil in the universe.
Scars Are Forever: Subverted. None of the immortals' severe wounds appear to leave scars, except neck wounds (the Kurgan's slashed throat in the movie, and Kalas' slashed vocal cords in the series), probably due to the connection between decapitation and death for them.
Also Xavier St. Cloud's entire hand.
Colin in the anime retains a scar across his face from when he very nearly got his head cleaved in two.
Scotireland: Averted. They generally go out of their way to note the difference, and in Endgame Connor and Duncan are reminiscing about Scotland while travelling through Ireland.
Self Mutilation Demonstration: In the original Highlander film, when Connor Mac Leod decides to reveal his secret to the love interest, he clears up any lingering doubts about his immortality by stabbing himself in the chest with a dagger.
Shaggy Dog Story: The police investigation in the first film. It initially serves as a means to get Brenda to meet MacLeod and provide his backstory. However it keeps going, juddering to a halt with no resolution somewhere before the climax.
Also, The Source. It's not canon now, but its interpretation of The Prize renders all the fighting in the series practically pointless.
Shut Up, Hannibal!: Inverted, in that it is deliver by the villain to the hero. In The Search for Vengeance, after about a thousand years of butting horns, Marcus Octavius admonishes Colin MacLeod to stop feeling sorry for himself and do something constructive with his immortality.
Skyward Scream: When Duncan finds Darius's body in the season 1 finale.
Connor manages to resurrect Ramirez in Highlander 2 by screaming his name to the heavens.
Squick: In-universe; Ramirez's reaction to Connor's explanation of Haggis.
Sudden Sequel Death Syndrome: The Source. Nearly every character from the television series, nay, the franchise is presumed dead in the film's dystopian world. Yes, even Connor, who bit the dust in Endgame.
Rather heartlessly, Methos, a highly popular character, is last seen running off in to the woods, presumably to be killed offscreen.
Word Of God states that The Source isn't canon and just some kind of trippy nightmare Duncan is having. Don't know if that helps, but there it is.
Super Strength: While they don't display it as consistently as they should, the Immortals in Highlander are more then just Humans with the ability to regenerate and recover from fatal injuries and potentially live forever. Immortals are stronger, faster and tougher then Humans, and this grows as they age, train and acquire more Quickenings. Being able to cut off the heads of other Immortals, much less any Human being requires a great deal of physical strength, seeing as how hard it is to do consistently. The Kurgan himself displays this when He's able to chop down a huge chunk of the tower that Connor lives in, and when He manages to stab a man and lift him up into the air with his sword. It's much more obvious how much more stronger and more powerful Immortals are, in The Search for Vengeance; when you're not constrained by a special effects budget like they would in live-action films.
Synthetic Plague: This is the sub-plot in the anime Highlander: The Search for Vengeance, where Marcus has released a virus over New York to wipe out all of people who haven't conformed to his ancient Roman ideals. The virus only had an 80% kill rate but by the end of the movie he's managed to make a 100% version.
In the series, Kronos plots to unleash one of these more or less For the Evulz.
Theme Naming: Highlander's Big Bads tend to names beginning with a "K" (The Kurgan, General Katana, Kronos, Kell, etc). This earned them the Fan Nickname of "K'immies".
The Reveal Prompts Romance: The 1986 film set one of these up between the secretly-immortal Connor MacLeod and his love interest. Made more remarkable by the fact that Connor made his reveal by stabbing himself in the chest.
In the original film, it takes place over the course of a few years.
Richie gets two of them in "Eye For An Eye."
The third film includes a sequence in which Connor returns to Scotland, and several beats from the first film's montage (running on the beach, rowing on the lake) are re-created with solo Connor.
Translation Convention: During flashbacks to previous eras, the MacLeods and other immortals are often seen in various countries, speaking English (sometimes accented, sometimes not) with people who may not have actually been speaking English at the time (again with the on-again, off-again accents.) During segments of the series which take place in Paris, the majority of the bystanders and bit characters will speak plain English, with one or two characters speaking in a French accent.
Truce Zone: Any "holy ground" is a safe zone for an immortal. (But only from other immortals. Poor Darius. Jacob Kell also breaks it.)
Undead Tax Exemption: Averted: Connor has to change his identity every so often to blend in with society. Though he doesn't move on, just transfers his home and assets to the next identity. This is what eventually gets him found out once there are enough government records signed with the same handwriting over two centuries to backtrack over. Duncan takes a different tack; whenever he 'dies', he moves to another country and sets up shop there for 50-60 years, which he also advises Richie to do after the latter dies in a motorcycle racing accident.
Victor Gains Loser's Powers: One of the side effects of the quickening after one Immortal beheads another one. Not that pronounced in either the films or the series, but it's implied that the major villains (particularly The Kurgan) have so much skill and knowledge due to their high number of kills.
Artistic License - Astronomy: A character who is observing the phenomenon warns that the entire Earth will be bombarded with "cosmic radation". Methos, for his part, contends that the planets are merely exhibiting "orbital wobble". And, of course, in the film's climax, not only do the planets quickly move into alignment, but they're close enough to be clearly visible and huge in the night sky.
Who Wants to Live Forever?: Although the phrase is older than the movie, it was first used in the context of that trope here, when before it was about not being a coward in the face of danger.