"All these years I thought it was power that brought responsibility. It's not. I was wrong. It's responsibility that brings power. It's knowing what needs to be done that brings strength. And courage."
Dr. Tenma of Monster is basically Jean Valjean, below, with a high emphasis on emergency surgery. Alternately, what happens if Jean Valjean and Black Jack were combined.
All the saints in Saint Seiya had a bit of this, but Shun by virtue of his pacifist ideology would go to the point of nearly becoming a Martyr Without a Cause on several occasions. However, he twice managed to bring about a Mook Face Turn by sheer conviction and kindness, at other times he did kill when forced to, and at times he had to be bailed out by his older brother for his pacifism. At one point he held Hades, in Demonic Possession of his body, immobile thanks to the strength of his wish that his body not be used to harm others, allowing his brother a chance to kill Hades. Surprisingly, the Aesop managed all outcomes of his behaviour in the series, never outright making him a fool for his ideals.
Shun could be the poster child for this trope, especially because he represents it as visually as he does metaphorically - his armor is literally fettered, as per his mythological namesake.
Soichiro Yagami from Death Note is a police chief who is trying to capture the mass murderer known as Kira — who is his own son (he has no idea, though). As stated by Word Of God, he's the only truly Good character in the whole series.
He even pities Kira, because he concluded that the power to kill a human being so easily it's a curse, and that, while Kira was corrupted by having that power, he has the motivation to do the right thing.
Kenshin of Rurouni Kenshin is a model of this trope, where Defeat Means Friendship as well as the occasional Heel Face Turn when the defeated party realizes Kenshin could have killed them in the first five minutes if he wasn't carefully holding back. A pity that never works for Superman.
Negi of Mahou Sensei Negima! tries really hard to be like this, although numerous people (especially Evangeline) have pointed out that there are situations where it just isn't practical and could lead to even bigger problems later on. After much urging, he's getting to point where he's willing to compromise if the result will be better in the long run.
Alucard of Hellsing is a rare case of a villainous version of The Fettered, or at least a Nominal Hero. He will ruthlessly destroy any enemy he comes across with little regret, but is kept in check from a full-on murderous rampage due to his Undying Loyalty to his master, Sir Integra.
Appropriate considering who he's up against, but Shinn Asuka is a good testament to why these traits aren't necessarily that positive. Sure he really cares about the people he's close to and wants to protect them, but his adherence to Chairman Durandal leads him to not realize when he's crossing lines he shouldn't and accept blatant lies at face value. Oh yeah, and the name of the Gundam of the man he hates the most? Freedom.
In Code Geass Suzaku is the fettered counterpart to Lelouch. In season 2 he gets his "lawful or good" moment when he backs out from torturing Kallen with the Refrain drug.
The entire Marine organization are the fettered in One Piece' - their motto is Justice. Unfortunately their "justice" is a terrible thing sometimes.
Luffy may have ultimate freedom as his goal, but he is still fettered by his loyalty to his crew.
Nen users in Hunter × Hunter define this. A user who imposes restrictions on his use of power increases it. The stronger the restriction the more they increase its power.
He hates it when anyone gets hurt, but he's a genius gunfighter. Apparently he trains so hard because the better he is, the more likely he can resolve situations without anyone getting killed. Also never uses his superpowers because he can't control them, goes through hell for strangers constantly, is covered in scars under his clothes because (in a genre subversion) he's not Made of Iron... Extremely Angsty take on The Messiah, or just Woobie, Destroyer of Worlds waiting to happen?
And in his manga incarnation, if you read carefully he consciously chose to believe in people and care about and protect the human race, everybody, on the strength of Rem's idealism. If he compromised and decided it was acceptable to kill even one person, his reason for not being like Knives would fall apart. This doesn't actually happen, mind, but the circumstances are pretty special. If he ever just decided someone was bad enough that they deserved to die, it would have been the same as Knives only on a smaller scale.
So everything Vash does, all the time, no matter what, he's doing because it would be unacceptable to do anything else. Except maybe bubble gum, donuts, and certain levels of annoying, but once we're a way into the series it would disturb Meryl enough if he stopped acting like himself that he's got obligations to be a goofball, too. He often covers problems with this kind of behavior so as not to worry people, further confusing the issue of how much he actually means anything. Ever.
Katanagatari exaggerates this trope with Ginkaku Uneri: The desert has invaded all his land. His castle is ruined; he is the only one left, when Shinizika ask him why he fights, he sincerely answers he doesn’t know. Even so, he’s willing to die defending his sword only because he must defend something.
Superman likewise has the preservation of human values, life, and property—all human life, people like Lex Luthor included—acting as limiters on his power. Heck, most flagship comic book superheroes tend to be Fettered.
Averted by Wonder Womanin some ways. It's arguable, however, that her own moral code is just as stringent as Superman's or Batman's even though it does allow for killing to serve the greater good.
The Sandman: Morpheus uses the rules of the Dreaming and the occult universe in general to accomplish his goals, at one point explicitly stating that the laws which empower him in some ways also bind him in others. He's fond of the word 'responsibility': responsibility for the survival of the Dreaming, responsibility to anyone under his protection, responsibility to his son... Eventually, this is what kills him — or, perhaps, makes life so intolerable for him that he arranges his own death. It's complicated.
Professor X is this and he wants to spread his view to every other mutant on the planet. Humans may despise, mock and scorn mutantkind...but they are never to be harmed. The powers that mutants are given make them the Superior Species, but not the superior man and a balanced world where all are accepted equally is his ideal vision. Magneto, on the other hand, says something a bit different...
The Watcher from the Marvel/DC universe took a vow to never interfere, only to watch. Many times, he is depicted as being in deep internal conflict because he so desperately wants to intervene to prevent a disaster, even starting to take action at times only to remember his vow and abort his intended action before it is even noticed by the main characters.
Soldier of Spira, a Final Fantasy XAlternate Universe, presents Auron. The man will stoop to many, many levels to get the job done, and Thou Shalt Not Kill is not one of his restrictions, but the death of innocents does bring him grief. His one, unbreakable rule is that if he makes a promise, he will keep it. His word is his bond, and he uses his word and knowledge of hold all of creation hostage. By threatening to unleash what appears to be the Legions Of Hell if Rikku dies in Zanarkand. The world, and fayth, and Lords of the Living and the Dead decide to yield. But, as one of the more dangerous Magnificent Bastards in the world, he is not above adhering to only the letter of his promise. Combine this with a truly unholy amount of willpower, and a genuine desire to protect those he cares about (if it doesn't get in the way of The Plan), and Auron is more dangerous than ever by the sheer resources he commands in his private crusade to save Spira. Not defeat Sin, save all of Spira. With all the complicated logistics and cultural boundaries to topple. He has committed himself to the job, and his every word shows his determination in all of its fettered glory.
newChaos from The Open Door very nearly approach The Unfettered, but one of the things holding them back from total freedom from limits is their utter devotion to the protection of children, justified as three of their godly pantheon were formerly adolescents at the Dysfunction Junction. Those who get caught abusing children find that the question isn't whether they're gonna get fucked up... but how bad.
Marshal Tolonen in David Wingrove's Chung Kuo series.
Jean Valjean of Les Misérables spends most of his time on the run from the law, but it doesn't stop him carrying out attention-drawing rescues and paying off prostitutes' debts should the need arise. However, Inspector Javert uses his commitment to justice much more than Valjean does to morality.
Death of the Discworld. He could become less reliant on the rules and much more powerful, as his counterpart in Reaper Man demonstrates. He refuses to do so, as those rules and the care of the Reaper are quite important in the world, even though his rules do imperil it or require Susan's intervention in his stead.
From the same series: Sam Vimes. He could give in to his baser instincts and become a violent, drunken thug - and he'd probably do well if he did. He could give in to his loftier instincts and become a Knight Templar. But he doesn't, because he's seen where both those roads lead and he chooses every day not to go there. He could also simply let go of responsibility, give in to the fact that his marriage to Lady Sybil has made him nobility (and one of the richest people in Ankh-Morpork), and generally let other people worry about morality. The fact that he can't do this (and, in fact, would be much happier without both nobility and wealth) is part of why she fell in love with him in the first place.
Also, Esmerelda "Granny" Weatherwax, a bad witch by inclination but a good witch by sheer force of her iron will, comes as close as humanly possible to being this andThe Unfetteredat the same time. "But I can't do none of that stuff: That wouldn't be Right."
Captain Carrot also embodies this with his "personal is not the same as important" mantra, as well as his refusal to become king.
You could make a case for Vetinari fitting the trope as well. He could probably rule half the Disc if he put his mind to it, but chooses to stick to Ankh-Morpork. In Making Money he points out why this would not be a good idea, starting with the fact that the city has only just recovered from the last empire it had.
Angua definitely fits the trope, and her brother Wolfgang is an example of what could happen if Angua ever went "off the leash." Oh so very much. Witness the dialogue between her and Carrot in The Fifth Elephant (paraphrased): "If I went off like that, would you put me down?" "Yes." "Promise?"
In The Dresden Files series, once Susan is changed by a Red Court vampire, the person becomes Fettered because, once the first kill is performed, that changed person permanently becomes a member of the Red Court.
Also, Wizards in general are this. The White Council enforces 7 Laws that they must adhere to. Violating them is almost always cause for a Warden to teleport to them and execute them on the spot. This is because almost all wizards who practice black magic become Drunk on the Dark Side since it is highly addictive.
In the Codex Alera series, the powerful First Lord, ruler of Alera is one of these. He has incredible furycrafting powers, but since they come from a single Fury, Alera, he is bound to do things that benefit everyone. This means he has to make brutal decisions, including, at one point, setting off a volcano prematurely, causing the deaths of tens of thousands to avoid tens of thousands of additional deaths, and provoking a What the Hell, Hero? and Amara to resign.
Emperor Leto Atreides II in Dune is utterly bound by the Golden Path: the salvation of humanity.
Gandalf in The Lord of the Rings is fettered by his charge not to interfere with Free Will. The Stewards of Gondor are fettered by the charge not to claim the crown for themselves but to keep it in trust. And even Denethor keeps this Heroic Vow. It is not clear what he would have done had Aragorn arrived before he died, but his nature indicates he took this charge seriously at least when he was in his right mind.
Wencit of Rum, the last white wizard from Oath of Swords (and sequels) is forced to recruit all sorts of unlikely characters to take out the henchmen of the evil wizards he fights, because he won't use wizardry against non-wizards. He took a vow where his magic may only be used in self defense or against dark wizards only when they've been read the equivalent of Miranda Rights asking them to desist in the use of Dark Magic. The Oath is sworn to a thousand year dead empire with him as the only survivor, and he's still trying to enforce their law.
Which has not, however, stopped him from informing the evil wizards he fights that if they ever try to attack Leeana with magic again, he will raze their entire continent to the bedrock. And then do it again just to make sure nothing has survived.
Jean Tarrou, from The Plague has an Existentialist worldview which tells him to always do everything to save lives despite the apparent meaninglessness of such acts in the uncaring, absurd universe.
The protagonists of Atlas Shrugged, who are examples of The Fettered as Übermensch. In this case the code of honor is Objectivism, so it is YMMV. At the same time, most of the protagonists start out fettered by either their success or their compassion on the masses. A big part of Dagney and Hanks' character arcs is learning to become The Unfettered and let it all go for their own self-interest.
Dalinar Kholin of The Stormlight Archive' is this, he has dedicated himself to following the ancient Codes of War which have been forgotten for centuries, and ends up giving up his Cool Sword to a rival that tried to get him killed to save the slaves responsible for making sure he didn't get killed because he promised them he'd free them and it was the only thing his rival would accept in trade. This makes a Crowning Moment of Heartwarming taken so far it also qualifies as a Crowning Moment of Awesome.
Ned Stark in A Song of Ice and Fire is utterly wedded to acting honourably, even if it puts him at a disadvantage. At the very end, he drops his honor for the sake of his family, but by then it's already far, far too late.
In Doctor Who, the Doctor makes a point of not going back in time to change events in his own past. It's possible and easy to do, but it damages space-time — it's like choosing not to drive a car when you're worried about your contribution to global warming. In "Earthshock", even though he could pop back in time to the bridge of the doomed freighter in order to scoop up Adric and get him out of harm's way, he refuses. He has already witnessed the destruction of the freighter with Adric aboard.
How much of that is obeying legalistic/moral "law" and how much is literal physical law (we've seen really nasty metaphysical consequences from people crossing their own personal timeline and changing their own past before in the show) is up for discussion, as the Doctor rarely makes it completely clear when he refers to not breaking the Laws of Time which aspect he's referring to. Though it's worth noting that, in "The Waters of Mars", after actively choosing to outright change something he believes cannot be changed, his personality takes a very dark turn shortly after. In a sense, we watch him start throwing off the Fetters... and Evil Feels Good. At least until he gets a very rude awakening that shocks him back to his senses, as he realizes You Can't Fight Fate.
The best example of the Doctor being this is in the 10th Doctor's final Heroic Sacrifice. He can either sacrifice himself and save the life of an old man trapped in a room that's about to be flooded with radiation, or he can let the old man die. The Doctor shouts and rages against the unfairness of being "rewarded" with death after all the good he's done, but he never once even contemplates saving his own skin. Even when the aforementioned old man tells the Doctor not to save him, then begs him not to, then shouts and SCREAMS at the Doctor to walk away and save himself, the Doctor still refuses to let it happen and chooses to die in his place. "Wilf — it's my honor." And he meant every iota of BOTH of the meanings of the word "honor", both that his honor was at stake if he didn't try to save Wilf, and that he felt honored being called on to save a dear friend as his final act.
A straight example from Doctor Who is the Last Centurion, who must suppress the memories of what he has been for the sake of his own sanity and carry on as though he is just plain old Rory Williams - until things get really bad.
The Doctor outright acknowledges the fact that he has many self-imposed behavioral rules (not just time travel no-nos) in the Series 6 Episode "A Good Man Goes to War." When Kovarian assumes that "the anger of a good man is not a problem" (apparently she never heard what he did to the Family of Blood) he's quick to correct her.
The Doctor: Good men don't need rules. Today is not the day to find out why I have so many.
Spock in Star Trek: The Original Series is one of the biggest examples of a Fettered hero. Since he could easily kick Kirk's ass with one hand tied behind his back (and actually does so on a few occasions), but sticks to his second-in-command role nonetheless.
Buffy tries to stop Willow's Roaring Rampage of Revenge against the Trio, as they are human criminals who should be judged by human laws. No doubt she had in mind her previous experience with Faith, who believed that being the Slayer meant she was above the law.
Buffy: Being a slayer doesn't give me a license to kill. Warren's human.
Buffy: So the human world has its own rules for dealing with people like him—
Xander: Yeah, we all know how well those rules work.
Buffy: Sometimes they do. Sometimes they don't. We can't control the universe. If we were supposed to, then the magic wouldn't change Willow the way it does. And we'd be able to bring Tara back...
Dawn: And mom.
Buffy: There are limits to what we can do. There should be.
Helo from New Battlestar Galactica is the complete opposite of Cain who is The Unfettered. He never forgot to be human and not stoop to the level of a barbarian or animal due to his situation.
In Exalted, each type of Celestial Exalted has access to their own version of Righteous Lion Defense, a Charm that runs on this trope. It works by making a single emotional bond the Exalt has completely inviolable; they can't act against it themselves, and no one else can ever persuade them to do so, even with Mind Control Charms. Solars pick an Intimacy related to an all-encompassing ideal, Lunars pick one related to protecting a specific person, place, or thing, and Sidereals become absolutely devoted to carrying out a specific long-term plan (and can change to a new one when the first plan is complete).
Similarly, each Perfect Defense comes with one of the Four Flaws of Invulnerability, a condition based on one of the four guiding Virtues that you must fulfill if you wish to use the charm in the first place. If you choose Compassion, you can only use it when defending something you have an Intimacy towards; if you choose Conviction, you can't use it if you're going against your Motivation.
One passage in the Alchemicals book indicates that there are Soulsteel Caste secret police who refuse to let Clarity numb their empathy even as they do horrible things for the good of Autochthonia - because they're afraid that without that awareness, He Who Fights Monsters will kick in.
The Word Bearers in Warhammer 40000 are fanatics who live their lives by the Words of Lorgar, by which they achieve mastery over chaos. Or maybe, are deluded becoming it's slaves. Either way they are fettered.
The Eldar are also pretty good examples of The Fettered - the discipline provided by their codes keeps them on the straight and narrow.
Some Inquisitors and many loyal Space Marines also qualify.
More specific example: Zahariel in Descent of Angels, whose main motive in any circumstance has a 99% chance of being Duty.
The entire Tau race, with the Ethereal caste providing the fetter. Without it, they were on the verge of destroying themselves. With the Ethereals, they have conquered a significant area of space (still nothing compared to anyone), have a sort of Warp Drive Lite (99% less likely to lead to your horrific death at the hands of a daemon and only 7 times slower).
The Book of Exalted Deeds had a ruleset called the Sacred Vow. By taking a sacred vow, one could gain measurable in-game benefits. Taking vows at all required a feat, and each vow had to be selected as an additional feat. Of particular note was Vow of Poverty, which in a game that is focused on gaining equipment to become more powerful, would have to provide no small amount of benefit in order to be worthwhile - even with all the bonuses it piled on, it still isn't worthwhile past around level 6, because even awesome bonuses to various stats don't make up for lack of versatility. So it's only good for classes that can already be highly versatile without gear like metamagic rods or boots of teleport or antimagic torcs. So... useful on druids.
Paladins. are not only Always Lawful Good, but they must adhere to a Code of Conduct that includes "respecting authority, acting with honor (not lying, not cheating, not using poison and so forth), helping those in need (provided that they do not use the help for evil or chaotic ends) and punishing those who hurt or threaten innocents". Any paladin that commits a grievous violation of this code loses all of their paladin abilities. The Code of Conduct was removed in 4th Edition for a couple of reasons: first, to open up the class to paladins following non-Lawful Good gods. And second, because Killer Game Masters often used the Code of Conduct to force unwilling Paladins to fall, setting up no-win scenarios that required the Paladin to commit a violation or citing the slightest misstep as an excuse.
Inevitables, Lawful Neutral sentient machines from the plane of Mechanus, are also bound by the quest they were designed to fulfill the second they are created. If they don't die in the process, they're disassembled upon completion anyways.
In Changeling The Lost, Pledges can make a Fettered character very powerful indeed. The strength of the boon is proportional to how committing the task and how strong the punishment if you fail are. In its most powerful form, it can turn a mortal with no prior martial skills into a master of kung-fu if pledged to fight to the death for you under pain of an inescapable and painful demise.
In Unknown Armies from global level up, players can take on the powers of particular archetypal characters by certain behaviors. For instance, a person wishing to become a powerful fighter may stop shaving and start camping in the wilderness and hunting his food with his bare hands to become an avatar of The Savage. This makes him stronger, tougher, and eventually able to speak with animals. On the flip-side, all archetypes have particular taboos that cut avatars off from their powers for a limited time and weaken their link to the archetype - in game terms, decreasing their skill. Savages, for instance, cannot deceive people or have more than the most basic technological skill. Certain archetypes can only be channeled by one sex.
In Magic: The Gathering's "Shards of Alara" block, this is what best describes how the Bant (white-aligned) shard's "Exalted" mechanic works. In story, Bantians gain magical sigils that represent past heroic deeds, as well as a bond of duty to the one who conferred the sigil, such as a lord, kingdom, or even an angel. In gameplay, if a creature attacks by itself, creatures with Exalted will confer a small stat pump to it. If a player controls several exalted creatures, this can get very painful, very fast. Magic as a whole is this. Lead designer Mark Rosewater has emphatically stated over the years that "restrictions breed creativity".
Genius: The Transgression: the Peerage exists mainly to instil a good healthy sense of fetters in Geniuses. They're much better at not getting people killed or having machines explode from Havoc if they bear in mind that they have obligations. You'd do this too if you had seen what The Unfettered were like in Genius.
In Scion the characters are this, gaining power from their Virtues, Legend, and sometimes their Fatebindings. However, in trying to resist following their virtue, they can potentially go crazy.
To go with the Havik example in The Unfettered, in Mortal Kombat, Knight Templar Hotaru, leader of the elite police force in Order Realm. So obsessed with upholding the law that he'll lock up his own friends until they're old and grey for a minor infraction.
In Dragon Quest IX, the main character is Fettered in one key way. No Celestrian may raise arms against or harm a superior. This becomes a serious issue later in the game.
Warcraft III has Prince Arthas, devoted to his kingdom, who makes the wrong choice when faced with good vs lawful vengance at the end of the human campaign as a result of being majorly played by the Lich King
Dissidia: Final Fantasy presents the Warrior of Light as one. He is bound quite tightly by his loyalty to Cosmos and devotion to Light. To the point that he is perfectly willing to (and has) repeat the events of the battle between Cosmos and Chaos unto infinity. If he gets the opportunity to Screw Destiny, he's going to take it, and save Garland into the bargain if he can.
Terra chooses not to use her full power most of the time, because she's scared of losing control. With good reason too, her powers are so incredible that she was specifically headhunted by Kefka to fight for the side of Chaos.
Paragon Shepard in Mass Effect is one of the crowning examples. S/he's an absolute Badass in every way but everything that s/he does is done to make the galaxy safer. The ending of Mass Effect 2 illustrates this point perfectly: The Illusive Man tells Shepard to save the technology from the Collector Base, which will be a huge asset in the war against the Reapers. Paragon Shepard is disgusted - the technology is Powered by a Forsaken Child - and chooses to destroy it rather than compromise his/her values.
Shepard: I won't let fear compromise who I am!
Disgaea 3 has Raspberyl and her Girl Posse Kyoko and Asuka, dedicated demon Delinquents who staunchly follow all the rules demons are supposed to break. They have to mantain their perfect attendence record, and have their own self-imposed curfew, which keeps them from joining your party full-time until they graduate.
Vhailor from Planescape: Torment adheres to the Mercykillers' creed and his unflinching belief in justice and retribution. Anything else is a secondary concern, up to and including that trifle that he's been dead for the last century or so and the fact that he's lost most of his memories. If you actually point the former out to him, his reply is essentially that while there are criminals still alive to punish he's not about to take time off simply so he can obey the laws of physics. If you take the time to describe the Final Boss' sins to him, his belief that said sins merit punishment actually makes him more powerful for that fight.
The Gray-beards and the Blades in The Elder Scrolls V Skyrim are both examples of this, though they have very different goals. The Gray-beards dedicate their lives to the "Way of the Voice", meditating on the meaning of the Thu'um instead of actually using it to accomplish anything. Makes sense since the Way was created by the Dragon Paarthurnax who has spent thousands of years repressing his innate desire to dominate others, and the fact that the Thu'um is incredibly deadly to anyone without the power of the Voice. The Blades are dedicated to serving the Dragonborn and exterminating the Dragons whom they see as Always Chaotic Evilthey're right too — even the "good" dragon Paarthurnax they want you to kill says it's not a good idea to trust a Dragon. The Blades will actually cut off ties with you despite everything you've done for them if you refuse to kill Paarthurnax.
Tales Of Symphonia gives us Colette. She knows from the beginning the 'angel' is lying to her, and that she will have to die and loose her mind and memories for the world,yet she just keeps going. She also hides the fact that she gradually loses all kind of feeling and sensation so well that no one except Lloyd realizes that until she [[spoiler : looses the ability TO SPEAK!]]
Miles Edgeworth of the Ace Attorney franchise. More so following the events of the first game.
Shirou from Fate Stay Night, even if said ideals tend to be somewhat naive, is a prime example of The Fettered. He can only use his magic specialty because of his ideals and because he puts no value on his own life.
Archer lived his entire life as The Fettered, and was eventually alienated from others due to their inability to understand his desire to save everyone. In the end, his own ideal betrayed him as it led him to become a Counter-Guardian, forcing him to spend all of eternity slaughtering people whose actions threatened humanity.
Ben about his character Obi-Wan Kenobi in Darths & Droids, during the final confrontation with Anakin:
Ben:"I wrote "Good" on my character sheet and I jolly well meant it! Unlike some people!"
Equius of Homestuck is so STRONG that he could defeat anyone if he wanted to. Unfortunately, he's so bound by his extreme loyalty to the trolls' blood-based hierarchy that he doesn't even try to prevent Gamzee from strangling him, because Gamzee ranks higher than he does.
MSF High Forum: Israfel, due to his code of honor. This is on purpose, to make up for an attempt to become the Ubermensch.
Aang from Avatar The Last Airbender definitely is this. He is the Master of All Four Elements, with near God-Like powers at time, and he could do whatever he wants. However, his own personal adherence to the sanctity of life means that he refuses to kill deliberately- he won't even kill Fire Lord Ozai, a man who was willing to commit complete genocide of an entire people. In the end, he is about to kill him, and would have, if he had not stopped himself. Instead, his purity of spirit allowed him to bend Ozai's spirit and destroy his bending.
Aang: (stops himself form delivering final blow) No. I'm not going to end it like this
Ozai: (strangely disdainful) Even with all the power in the world, you are still WEAK!
Rainbow Dash proves herself to be fettered in the My Little Pony: Friendship Is Magic episode "Wonderbolts Academy." Her flying abilities are such that she can simultaneously break the sound barrier and visible spectrum, and she's always out to prove that she's the best flyer and athlete in Equestria, but she absolutely refuses to do so in such a way that risks causing harm to other ponies - even at the expense of her dreams.
Max Weber's social actions delineate "Rational" and "Instrumental" actions. The Fettered and The Unfettered are people defined exclusively by, respectively, Instrumental and Rational actions.
First World militaries are this. They voluntarily follow The Laws And Customs Of War, and punish those who break them. Even the worst Curb-Stomp Battle is nothing compared to what they could do to someplace if the gloves were fully off. Even if a "First World" military can ignore the masses, they can't ignore each others. It's one thing to be total assholes to some obscure "Third World" people, but once your fellow First-Worlders get a sense that you're willing to do the same to everyone, expect your erstwhile allies to gang-up on you.
A particularly noble example were conscientious objectors in the Vietnam War. They suffered horrible casualties flying medical evacuations and serving as medical personnel. They entered war zones without a weapon to defend themselves with. They saved many lives.
Anyone with a conscience. We don't think about this much in daily life, until we encounter someone who isn't. You'll learn quite quickly why being The Unfettered is not usually a good thing. Meetings between parties with severe Values Dissonance usually end with one side viewing themselves as this trope and the other as the opposite or vice versa, which often results in conflict.
The U.S. Constitution was designed with this in mind by dividing government into sections and establishing roadblocks to prevent any one group or individual from seizing too much power.
Civilization only exists because most people are The Fettered.
Human muscles are this. Under most circumstances, we cannot use more than about 50% of our muscles strength. The reason is, if we could, our muscles could literally tear our ligaments and otherwise severely damage our body. In emergencies, our brain can bypass this limit, but still with risk of severe injury.
Most positions in a modern society which award authority also come with strict codes to govern that authority. People in the First World find corruption amongst the following classes of people so contemptible (and a great source for drama) because they expect those who take these roles to become The Fettered. In a more corrupt society...not so much.
A "good cop" is a classic example of this trope.
The Hippocratic Oath and medical ethics demand a great deal from medical professionals.
A special mention of the Combat Medic: if captured, he or she is entitled to continue working as a medic for the prisoners. He or she is obliged by the laws and customs of war to care for enemy wounded, even if he or she is a prisoner. He or she is obliged ethically to treat all wounded according to their priority, regardless of their allegiance. Their vehicles and persons are protected under those same rules only if used strictly for medical care and if they are clearly labeled with a red and white bullsey-...cross, crescent, or lion. Finally, they may only carry small arms.
Lawyers actually have a lot of ethical and legal rules they must follow, all lawyer jokes aside.
Clergy, politicians, and government officials, to include military professionals.
Academic and educational officials and professionals, such as teachers, professors, and deans.