Detective Dick Gumshoe from practically any game he's in. He is always willing to help out anyone despite the abuse both verbal and physical he takes whenever he's around. He also has plenty of Big Damn Heroes moments where, at most times, he ends up helping out Phoenix Wright who is supposed to be the enemy. Not to mention as revealed in Ace Attorney Investigations, Gumshoe was willing to let himself be the prime suspect in a murder just to protect a promise of a young girl that he just met. Now THAT'S being nice!
Will Powers is definitely this. The guy may have a rough appearance, but he is a total sweetheart and a Gentle Giant. Hell, he hides himself in a costume to prevent the children from being disappointed from seeing his face.
Klavier Gavin from Apollo Justice (and Dual Destinies) is definitely the nicest prosecutor in the series. He is on good terms with Apollo outside of court and in court, he even helps Apollo! In fact, after his first loss to Apollo, he treats him and his friends to one of his concerts as a reward.
Lamiroir is from Apollo Justice is such a sweet woman even when she had amnesia and was blind.
Colias Palaeno from Ace Attorney Investigations is pretty nice especially as an ambassador. He is extremely cooperative allowing Edgeworth to investigate the Allebahst side without any hesitation. In fact, it's because of this players thought he would be the murderer, but it turns out Palaeno's kindness is genuine and he truly wants to find the murderer of his right-hand-man, Manny Coachen.
Jeff Master from Investigations 2 is also this. This man is extremely nice and is always in good spirits. It is heartbreaking seeing him in jail and his hair turned white after a harsh interrogation courtesy of Manfred von Karma. It took nearly 20 years to finally get him out of jail but, when you think about, a nice guy like him was in jail for that long when he didn't do anything wrong at all.
Although Allison takes Henry captive, she's nice about it. She has friendly conversations with Henry while he's locked up, gives him a cool seeing tool she found while she was exploring, and tries to help him escape from the Ink Demon. After Henry frees himself and encounters her again, she's a genuine ally.
Boris shelters Henry and accompanies him throughout Chapter 3, despite having lived in an Eldritch Location for who-knows-how-long.
Henry is just a normal guy trying to survive his extremely bizarre and terrifying situation. He apologizes for having to kill Jack Fain to get a valve and only ever hurts anyone else in self-defense. He doesn't even try to go after the crazy Alice who is trying to kill him.
While a bit cynical, Sammy Lawrence was still a relatively hard-working and polite guy. Word of God describes him as a "decent" person. Or at least, Sammy was like this before his Sanity Slippage.
Before her Sanity Slippage, Susie Campbell sounds quite friendly and nice in her recordings.
After slowly defrosting in 2, Miranda becomes this in Mass Effect 3, having absolutely zero Kick the Dog moments, practically begging Shepard for forgiveness for desiring to put a control chip into them at the beginning of 2, trying to avoid leaning on Shepard for help, and going further than ever to protect her sister from her father and in the process, warning innocent civilians about Sanctuary.
GarrusVakarian is a really friendly guy as well, and incredibly loyal to Shepard. ME3 pretty much makes him one of Shepard's biggest pillars of support, the others being the aforementioned Liara and Tali.
Leon Kennedy, Revan, Zack Fair, move over. A Paragon Shepard is portrayed as the Ultimate Hero by the loading screen hints, if not the best example in gaming then in the top three, and shows even The Doctor how Good Is Not Soft is done.
From Mass Effect: Andromeda, there's Nakmor Drack, a krogan who is also an absolute sweetheart. And that's when he's not dealing with his girlfriend, Kesh. He's one of the most pleasant beings in the entire game (the whole "murder potato" idea aside, that is...)
The King of Fighters has no shortage of nice guys, from protagonists like Kyo Kusanagi and Terry Bogard to stalwart do-gooder Kim Kaphwan. One character that stands out is Antonov, the organizer of the tournament in The King of Fighters XIV. He is quite unlike other organizers of the tournament: he is not a criminal like Geese Howard or Rugal Bernstein, he has no affiliations with NESTS (outside of inviting NESTS washout Sylvie Paula Paula to compete), and he has no dealings with Orochi. Compared to previous organizers, he has more in common with Wolfgang Krauser: a rich aristocrat and formidable fighter with a sense of honor, the chief difference between them being that Antonov is unambiguously good while Wolfgang is an Anti-Villain.
Fuuka Yamagishi. When Natsuki, one of the school bullies, locks her in the school during the Dark Hour, which endangers Fuuka's life since she's a Persona user and is now trapped within Tartarus, Fuuka protects Natsuki when she ends up in danger, and not only forgives her, but also befriends her.
Also, the Female Protagonist. While both she and the male lead can help out so many strangers, her own dialogue comes across as being more genuinely cheerful and helpful, whereas the Male Protagonist's dialogue is a bit more dour.
The Main Character almost never speaks, but he seems like a really nice person, both in his few dialogue choices (always polite, considerate, and caring) and in action (helps almost everyone whom he meets overcome their psychological issues, works at a daycare center, hospital, and a tutor). While much of what he does is dictated by the player, his dialogue actions and character's statements on his behavior make it clear that he's incredibly kind.
This characterisation continues over into Blazblue Cross Tag Battle, where Yu (who is Suddenly Voiced) gets along with basically everybody he teams up with even though they come from threedifferentuniverses, and even if it doesn't work he still makes the effort to try. He even gets along well with Weiss Schnee. Fridge Brilliance kicks in when you remember that Yu already has plenty of experience in getting a diverse pool of people with different personalities and abilities to co-operate.
Rise Kujikawa from Persona 4. Notable, because you'd pretty much expect her to be very Tsundere when you first see her. Twin tails, Zettai Ryouiki, one of the female leads and a love interest, voiced by Rie Kugimiya in the Japanese version... you get the picture. But not only is she not a Tsundere, she's even been described as the anti-Tsundere. She's bubbly, outgoing, a gigantic flirt and acts quite down-to-earth despite being a famous (former) Idol Singer.
Nanako Dojima, the main character's cousin. While it's indicated that she's not as cheerful as she seems, she's always kind and polite to the protagonist and his friends, and shows up at some point in the party members' social links assuming they're done before she's kidnapped, to offer them words of support, such as telling Rise that she's her fan.
Persona 5: The Main Character is a fairly friendly fellow. Like the protagonist of the previous game, he doesn't say much, but he's sociable and kind to those around him. With many of his Confidants, he may even venture into Mementos to track down the Shadows of those who are causing grief to his friends, forcing them to change their hearts and make life a little easier for his loved ones. This eventually leads to the Confidant finding out about his being a Phantom Thief, but they keep his secret, and in turn, aid him when he fakes his death late in the game.
It's saying a lot when the nicest character in such a bleak story turns out to be arguably the most evil character.
Alistair, from Dragon Age: Origins, is about as nice as is possible to be, unless you hit his Berserk Button. Leliana is very sweet, and even Zevran, despite being an assassin hired to kill you, is good-natured and easygoing. Not coincidentally, they are three of the four potential love interests in the game.
The nicest characters in Dragon Age II are Merrill and Varric, mostly because Merrill doesn't really get how or why to be mean to people and Varric limits himself to poking fun.
Varric never goes anywhere without Bianca, and we all know that she is as vicious as he is snarky
There's also the PC's sister Bethany, who very much lives up to Varric's nickname for her: Sunshine. Sebastian also counts, unless Anders is spared in the endgame, wherein he declares war on Kirkwall.
Cassandra from Dragon Age: Inquisition, while not apparent in Dragon Age II or at the beginning of the Inquisition, is loyal, fair and kind with all the companions and even an mage-friendly, atheist inquisitor (if the inquisitor doesn't attack her belief in offensive ways she still declares her friendship and swore loyalty to him/her), almost all her banters with other companions include at least one moment when she tries to understand their point of view, and even apologies in name of the Chantry and the templars for their actions, she also fast in try to undo any offense to other companions (for example, when she ask about Bianca to Varric, she reveals her own situation about Galyan). Even though the Inquisition is her work she has no interest in gaining any power herself as she only wants to help people something that Solas find admirable and unbelievable.
If Leliana is faking it then it's damn good act, throughout the first game she is unfailingly polite and civil, however this takes a somewhat dark turn during her side quest in that she is this way to escape her former life as a trickster assassin. In the second game she can actually encounter Hawke and despite her and Cassandra being desperate for them she doesn't press Hawke into helping them. Even as Sister Nightingale investigating the Chantry's destruction she's more after the truth than the angry Cassandra, and her dark persona is now a mask for the nice girl she is underneath with her tactics straight from the Good Is Not Soft playbook.
He no longer hates mages despite his own issues with them, and makes other ex-Templar Inquisition forces treat Inquisition mages and elves fairly.
One of the War Table missions involves arranging a political marriage between two young nobles even though the girl is in love with someone else. While Josephine's and Leliana's reactions boil down to "sad but it must be done," Cullen instead offers to help the girl and her sweetheart elope, politics be damned.
Another early War Table mission involves a very cranky old nobleman demanding the Inquisition send troops to force refugees off his lands—elves and apostates among them. Josephine suggests a polite refusal. Leliana, in a bizarrely out-of-character moment, suggests using spies to harass them off his land. Cullen will offer patrols to help the refugees (elves, apostates, and all), not the noble. If Cullen is chosen, the noble is outraged at the Inquisition sending food and blankets to the "filthy savages" instead of driving them off like any civilized army would do.
He asks Josephine to collect funds to help the relatives of those who died at Haven, and has a moment with Leliana in which they both gently express their sorrow that the tragedy happened. Despite their differing views and responsibilities, it's intimated that he greatly respects and cares about both of his fellow council members.
He seems to generally get along with everyone, even if he would have reasons to want to avoid them. One of Cole's lines implies that Cullen sometimes tells him jokes, and he has no objection to participating in the card game even if Cole is there (and Cole being what he is, Cullen's tolerance is pretty impressive). He also becomes good friends with Dorian, a mage from Tevinter, to the point where their chess game is the only time Cullen seems to actually relax.
The aforementioned Dorian, despite being a Tevinter mage, as well as Josephine also count. Both are unfailingly helpful and again, are romance options.
And of course, it is possible to play the protagonists of all three of these games as Nice Guys/Girls, depending on your choices.
Bartz from Final Fantasy V is one of the few protagonists in the series who is just nice, with no underlying issues or moments of Jerkassery. He's caring towards his fellow Light Warriors, very easygoing, and acts as a brother figure to Krile when Galuf dies and she takes his place.
Zack Fair, from the Final Fantasy VII prequel Crisis Core. He's upbeat, sincere, utterly loyal, completely adorkable, and just wants to be a hero (in the very best sense of the word). Because of this, he manages to make friends with practically everyone he encounters, including Shrinking Violet Cloud, the Turks and pre-Nibelheim Sephiroth. Contrast to how Cloud, the main character of Final Fantasy VII, starts out his story as a vain, arrogant, apathetic asshole who deliberately antagonises his employers, and earns either fawning admiration or loathing from everyone around him until he grows up a little.
The main hero, Noctis, is practically an opposite of what his appearance might suggest. He's very friendly, fun-loving and perky with a side of good-natured Deadpan Snarker. The fact that he's a Kindhearted Cat Lover just cherry-tops it.
The main heroine, Lunafreya, is a paragon of niceness in the world. She's downright Spoiled Sweet, and pretty much adored for it.
Luna's attendant and divine Messenger, Gentiana, is another fitting example. While she's very cryptic and mysterious, she has watched over and protected Noctis and Luna since they were children - maybe even before than, and is nothing less than kind and friendly to them. She also loves photobombing Prompto.
Cindy/Cidney too is nothing less than extremely sweet, though very much Married to the Job.
Aranea Highwind, a momentary Punch-Clock Villain, is later revealed to be a very kind and friendly woman herself, defecting from the empire solely to help people and because Ardyn pisses her off. There are also her lieutenants, Biggs and Wedge, who are also shown to be very friendly and caring old soldiers.
Genki Girl Moira from Fallout 3 is one of the few people in the game that is not an obnoxious asshole who urges you to kill him, also, most ghouls in their town.
Of course, during her sidequest, she pretty much encourages you to expose yourself to near fatal amounts of radiation, and severely injure yourself. All in the name of research, of course (though she at least has the decency to patch you up afterwards.) And you don't actually HAVE to do it, you can instead just crush her dreams and leave her horribly depressed. Or you can nuke her hometown and leave her as a radioactive ghoul... You Bastard!.
Paladin Hoss is genuinely grateful to a Good Karma Lone Wanderer who helps him out, giving praise and promising protection.
All of the Good-aligned companions qualify, naturally. Preston Garvey maintains a professional soldierly demeanour and is a textbook Officer and a Gentleman, Deacon is laid-back and very cool guy with a breezy atiitude, Curie is unflinchingly polite and approves of noble actions, and Piper is playful, easy to get along with and passionate about helping the people of the Commonwealth.
Atrus from Myst is friendly, helpful, peace-loving, wise and sensible. Contrast his father and his sons, who are megalomaniacs and violent.
Guy from Tales of the Abyss is charming, laid-back, patient, and mature. In a world where all major characters have Dark and Troubled Past, he is the only one who manages to move on and thus grows up to be genuinely cheerful and all around pleasant simply rather than becoming jerkass, angsty, suicidal or omnicidal like the other characters (except Mieu). Other characters and especially girls notice, lampshade, and take advantage of his nice guy qualities though, much to his chagrin.
Stefan Bekowsky from L.A. Noire is this compared to the rest of Cole's partners, who are a (somewhat loveable) sexist, a despicable Smug Snake, and a WW1 vet with an initially abrasive attitude. Bekowsky himself? His worst flaw is occasionally flirting with female victims.
Prince Sidon from The Legend of Zelda: Breath of the Wild is practically the nicest person Link will ever meet. Sidon treats Link with the utmost respect for him and stands up for him when the elder Zoras don't want him around. Sidon also makes sure Link is doing alright as he makes his way to Zora's Domain and believes in his abilities that would help save the Zora people. Sidon also helps Link directly when combating the Divine Beast Vah Ruta so Link can get inside. After Link saves Zora's Domain, Sidon is more than happy to express his gratefulness to Link. He does all this without ever asking for anything in return.
Many of the protagonists of the Yakuza series are this, while also highlighting how sometimes Good Is Not Soft.
Kazuma Kiryu, The Hero of the series, is an ex-yakuza who simply wants to live a quiet life with his adopted sons and daughters. If someone is in trouble, he'll jump at the chance to lend a hand, and maybe knock a few skulls or two on occasion. He is especially nice to children, and anyone threatening kids can expect to be picking their teeth up off the ground.
Shun Akiyama was once a homeless man until a very unexpected windfall came his way courtesy of the events of the first game in the series. Using the money he managed to pick up, he made savvy investments, became a millionaire, then opened a loan office with the express purpose of giving away his fortune to those less fortunate than himself. Just like Kiryu, though, he's not afraid to kick some ass if he sees punks making trouble for those who can't protect themselves.
Similarly, Mario and Luigi from Super Mario Bros.. They're very open, compliment people they're competing against, and overall help anybody with a problem they can solve... Which is everybody.
In Mario Party 3, Star Stamps reflect the character's personality. Luigi can get the Kindness Stamp along with most of the other Stamps.
Even though Donkey Kong is a pain in the arse for Mario in Mario vs. Donkey Kong, when Donkey Kong starts sobbing because he can't get his hands on any of the toys, Mario just says, "It's OK, don't cry!"
Princess Peach, as fitting for her Princess Classic, is one of the kindest, most empathetic characters in the franchise, not having a single bad bone in her body even at her worst.
Isaac was openly identified as a Nice Guy by the extras for the first game, since he's a Heroic Mime in that one. Then in The Lost Age, he got to speak for himself, and he was good, but not very nice. The shift might be justified by all the crap he went through in the first game and the pressure he's still under in TLA, but it was still pretty jarring to a lot of players.
Ivan was identified as a sweet kid, but had some issues with Mind over Manners even in the first game, which he was even called out on.
Mia has a little bit of Deadpan Snarker, but is mostly a gentle White Magician Girl and the first truly nice player character in the series. Her Establishing Character Moment is healing an elderly couple, she quickly puts her trust in Isaac's group despite the doubtful circumstances of their meeting, and her most aggressive moment is even fully merited - revulsion with her cousin, Alex, upon realising the extent of his betraying their Clan's ideals.
Piers in The Lost Age is probably the first genuinely nice male player character. He's initially standoffish due to some trust issues, but once he defrosts, he is quite mellow and gentle. Heck, his Establishing Character Moment scene even has him try to comfort and empathize with an abuser, and mentally kicking himself after he's been driven to lash out with his Psynergy.
Dark Dawn's Matthew is generally held to be a sweet guy, though being as he is the son of the aforementioned Isaac and a known pottymouth, this might need to be taken with a grain of salt.
Amiti, on the other hand, is completely transparent, and pure sugar. Even to the nation presently at war with his - he's just that nice. It's a genuinely shocking moment when he first voices his opinions on criminal justice, and even then, he calms down after a gentle reprimand and a reminder of what's at stake.
Sveta of Morgal is so far the straightest example of this trope (even though she's not human, but a Beastwoman. She leads the party despite only just meeting them, helps them even when their goals come into opposition with her country's leader, Volechek (who is also her brother), protects the lives of people to be executed as part of her country's festival, and does her part to save not just her own people but the whole world. She's also an Action Girl who isn't passive-aggressive, and recognises that she can't leave the Grave Eclipse running for a second even though it would kill her brother, because to do so would only kill more innocent people.
Similarly, Gears of War has, most notably, Dom Santiago, all three Carmine brothers shown, and Cole, of the main cast, along with Dizzy and Anya of the supporting. Baird is a Deadpan SnarkerInsufferable GeniusJerk with a Heart of Gold and Protagonist Marcus is a Knight In Sour Armor, stopping them from fulfilling it, along with Sam, who like Baird is too much of a Deadpan Snarker to qualify, but the above mentioned main Nice Guys, likewise, have bad things happen to them. Dom lost his brother and children before the game series to the Pendulum Wars and E Day respectfully, his wife ran out and went missing, then e later found her and had to Mercy Kill her due to her torture leaving her catatonic. Anthony and Benjamin Carmine both died in battle, meaning Clayton lost two of his younger brothers, and Cole lost his entire family before the game, and off-camera during the opening levels also lost most of his squad.
From the Guilty Gear games, Axl Low is a British involuntary time traveller who nevertheless maintains a very friendly and optimistic attitude despite his circumstances and never holds any grudges against the various weirdos he winds up fighting due to one reason or another, always chalking the encounter up to bad luck. He's even nice enough to maintain friendly speaking terms with anti-social wanderer Sol Badguy, and offers to lend him his Queen CD. There's also Slayer, who is incredibly civil and polite to practically everybody, even his opponents, what with being a quintessential gentleman and them having no realistic chance of actually hurting him - he even hands out hints to random people for no reason beyond seemingly just wanting to be helpful (such as the time he informed Ky that there was something seriously wrong with the bounty on Dizzy despite having no reason to care about either of them).
Resident Evil 2 has Leon S. Kennedy; rookie cop, first day on the job, and is thrown into a Zombie Apocalypse. He devotes his strength in getting Ben (a reporter) out to safety and making sure Ada is out of harm's way (even taking a bullet for her). This gets Leon viewed as naive and gullible by the other characters in the game; Ben thinks Leon is just a cop who doesn't know what's really going on (Ben gets killed later on) and Ada sees Leon as dead weight to her mission (at first). Even Claire tends to ignore Leon at times. Leon becomes a Deadpan Snarker by Resident Evil 4, but never gives up in trying to help and protect others.
Addressed in the novels: When Ada attempts to flirt with him he admits he's scared and ignores the fanservice before saying he just wants to be a good cop. She's duly impressed.
Claire Redfield is also a very kind person, such as when she looked after Sherry in 2.
Her brother Chris is also a good guy who tries to protect everyone he can from bioterrorism.
Jill Valentine, Rebecca Chambers, Josh Stone, Sheva Alomar, and several other characters who aren't main protagonists or villains qualify.
Papers, Please has Jorji Costava, a career criminal who regularly makes attempts to enter Arstotzka. When you deny him entry, he takes it in stride and bears no ill will towards you for doing your job (unless you turn him away when he has all of his papers in order for once, in which case, he will be fairly miffed). If you get along with him fairly well, even when you turn him away, he'll offer you information on how to escape from the country, should you need to flee.
Most of the younger female cast members of the Street Fighter series are pleasant and good people (Sakura, Ibuki, and Elena especially- Elena's ending in SF 4 shows that she somehow managed to make friends with Akuma!). This is why Juri's introduction in Super Street Fighter IV was such a shocking contrast, because up to then Capcom had never introduced a female fighter who wasn't a Nice Girl (Juli and Juni in Alpha 3 were antagonistic characters but only against their will; Chun-Li, Viper, and Cammy are determined, focused, and somewhat militant but also good-aligned characters).
Giorno proves he is as sweet and kind as his biological father Jonathan in the "what if" DLC scenario for Vento Aureo in JoJo's Bizarre Adventure: All Star Battle. Fugo found out about the deaths of Narancia and Buccerati after his cowardly abandonment of his friends at San Marco Cathedral in Venice. Blaming himself, he comes before Giorno, now the Boss of the Italian Mafia, and begs to be taken back into the family. Giorno summons the Godlike Gold-Experience-Requiem and challenges Fugo to prove his dedication by defeating him in this state. If you somehow win this fight, Girono reveals that he holds no grudges for your betrayal, and embraces you once more as as friend. To this Fugo furiously wept Manly Tears, and this time pledges his "body, heart and soul" to Giorno for life. Just like his father Jonathan, Giorno is kindness personified.
Kennen from the Kinkou Order. Justfied as he's "The Heart of the Tempest". Heck, he's even willing to forgive Zed as well.
Teemo happens to be a very friendly yordle scout. May overlap of Beware of the Nice Ones since he can be a cold-blooded assassin when on-duty.
Gnar is a playful prehistoric yordle who is a kind and friendly guy at heart and befriends people easily who are friendly and playful towards him. Hence, this is one of the main reasons why he manages to befriend Lulu. Just don't piss him off or you'll face Mega Gnar.
Lulu as well. According to the developers, Lulu is a relatively friendly and kind-hearted yordle at heart and is willing to make friends who are kind, playful, and friendly. Apparently, this is one of the main reasons why she gets along with Gnar pretty well. She also was quick to acknowledge that she did bad things without realizing it when the Yordles got angry at her turning their kids into animals or plants even if temporarily and without malice, and accepted the banishment without much protest.
Zac was designed by Zaun's Mad Scientists, originally as a super soldier, where is taken care by two-caring husband-and-wife scientists as their own child. Despite all the trauma and the original purpose of Zac, he's happen to a nice guy at heart who serves as a defender of the helpless and the innocent.
Braum is so far the champion of Nice Guy in Runeterra. Not only his quotes are all nice, friendly and encouraging even to his enemies, his play style revolve around defending his teammates and helping them out. His lore has zero tragic elements as well, he just happens to be that kind of nice goat herder with immense strength, determination to help people in need. And he quotes his mom's words very fondly.
His introductory video features his intervening to save a poro from a hail of arrows.
Your partner in each game of the Pokémon Mystery Dungeon series is always one of the brightest, most positive characters in the story, and they make that immediately apparent by how readily they decide to befriend and look out for the hero just moments after they meet.
Gates To Infinity has a rather unexpected example in the form of Hydreigon, who's instantly likable from the moment you meet him in person, having a polite and kindly manner that runs entirely contrary to what one might expect from a member of his species.
In Fire Emblem Akaneia, both the protagonist Marth, and his childhood friend and Love Interest Shiida/Caeda, fit this to a T. Both are somewhat subdued, yet charismatic leaders who firmly believe in peace; Marth is extremely forgiving by nature despite what he endures, and Caeda recruits many former enemies simply by being kind to them.
The three Lords of Blazing Sword are all this to some degree or another. Lyn is a deeply kind person who never stops trying to help people in spite of her own problems, and her empathy generally only fails her with outlaws in general - due to a traumatic event in her past involving bandits, but she's able to learn to see the good in them as well - and villainous people in general. Eliwood, like his son Roy (below), is very astute and willing to see the good in people, doesn't allow himself to truly hate his enemies but pity them, and deeply dislikes the ramifications of war on innocents (it's noted by Nils that his father, Lord Elbert was very much alike, if more forceful and decisive). Finally Hector, while somewhat rude at times and abrasive (which makes him seem like a jerk), is very loyal to his friends and more soft-hearted than he's given credit for, to the point his friends like to tease him for his lack of tact contrasting with his inner kindness.
Wil, one of the most easy-going members of the army, is very easy to like and be friends with; he also reaches out to befriend people like Florina (who is timid around men in general) and Raven (who is aloof and cynical) and is good at bringing them out of their shells. And when he's confronted with past mistakes, he owns up to them instead of making excuses.
Canas, a scholar who studies Dark Magic but insists it's only as evil as its practitioner, is highly passionate about his studies and curious - a little absent-minded at times, but always well-meaning and polite.
Legault, perhaps the most personable agent of the Black Fang - he defects after the Fang's falling moral standards are irrevocably corrupted, joining Eliwood's forces when convinced they are in the right, and is kind to those he interacts with. He's also an Honorary Uncle to Nino, who is at ease with his pleasantness.
Nino stands out for being cheery and friendly despite being raised by an abusive mother who actually adopted her, begrudgingly, after murdering her actual blood parents, inciting protectiveness in those around her and in general not having a bad bone in her body despite her hardships. She's too empathetic for being in the Fang, and only shows anger at the pain others cause (to her and her friends).
Roy in The Sealed Sword follows his father's example in being kind and personable with people (if a bit sharper of mind).
The twin royals of Renais, Eirika and Ephraim, are kind people who only express it differently - Eirika rarely says a bad thing about anyone and values peace and friendship, Ephraim is refreshingly honest and empathetic (even giving an apparent enemy, who tripped while trying to attack him, pointers on how to better use her weapon). Both are willing to do the difficult things necessary, but neither truly enjoy it despite the former's anger at injustice and the latter's love for combat.
Franz, as well as his older brother Forde - both are friendly, easygoing men who treat their comrades well and easily form strong bonds (Franz with Amelia and Natasha, as well as an Intergenerational Friendship with Gilliam; Forde with his comrade Kyle, and also with Vanessa & Eirika). Both offer their time freely and with a smile, and neither takes kindness in general for granted (especially as Forde raised his brother from a young age).
Joshua, a laid-back mercenary of Jehanna who loves to gamble, is unwilling to harm women or other innocents (even rigging coin tosses despite his already-dreadful luck) and appears drawn to befriending people who are cold, aloof or broken. He also ran from his responsibilities as prince of Jehanna, but only so as to better understand his people and be a better King in the future, and his serious side shows all measures of his sincerity of character.
Tana, the upbeat princess of Frelia, who puts herself at risk to help her friends and is startlingly willing to die for doing the right thing (in one route, offering to let a conflicted Cormag kill her if he spares Duessel in return).
Gerik, an uncommonly-kind mercenary leader who treats his fellow soldiers well and is unashamed to be unorthodox in his line of work. Notable because as a young man he was once brash and arrogant, but after losing a duel to someone out of his league (who left him his signature scar), he learned humility and to treasure both his own life and those of his comrades. Both women in his troop, Tethys and Marisa, are drawn to him for his compassionate nature.
Chrom's daughter from the future, Lucina, helps around camp on her spare time, is very supportive of her friends, and is always trying to improve herself as a leader.
Sumia, one of the pegasus riders, is an absolute sweetheart. She seems to care for and love everyone. Except for cows. Cows annoy her.
Henry is a twisted example. While the way he tends to act can freak people out, he genuinely likes helping people. Even if the way he goes about it is completely misguided and a little... unorthodox. Unlike the sour grape that is Tharja, the only time he places hexes on his fellow Shepherds is if they ask him to do so. He just as gladly removes them again if they request him to, with no hard feelings.
The Avatar's child, Morgan, especially the male version. Unlike his female counterpart, who is a troll, and has a bit of a sadistic side to her, Male Morgan is generally nice to everyone he interacts with, just like his mother.
Stahl is a very mellow and friendly guy, and like Henry, he is completely willing to go out of his way to help (albeit hes normal about it).
The Avatar. They grew up surrounded by kind people (With the exception of Garon), and is naturally kind themselves (in Revelations and Invisible History it's revealed that this is largely in part due to their father, Anankos' good half). The Avatar is possibly one of the kindest and most forgiving lords in the franchise, rivaling the likes of Eliwood and Marth. In their supports, the Avatar is almost always helping or playing therapist to other characters in the army, and their general attitude—when they don't feel mischievous—is one of politeness and humility. Xander even tells them they're too nice for their own good—and, to an extent, he's right. Caeldori also sums it up well in her S support with a Male Avatar.
Silas, one of the Avatar's childhood friends (whom they forgot about) is a paragon of kindness. He assures the Avatar that even if they are Hoshido's prince/princess, they're still their own person, and he constantly tries to help out others. He's The Reliable One and often serves as a Warrior Therapist to the other characters.
Kaze is a calm, kind, and polite ninja. He'll join your party regardless of the player's decision. In many of his supports, he goes out of his way to help others.
The Avatar's elder brothers, Ryoma and Xander, both of them are surprisingly kind individuals. Ryoma's supports have a tendency to show him trying to help out others and being all-around nice, whereas Xander a calm, kind, and honest man, and raised the Avatar to be a good person at heart (it might have worked a little too well).
The Avatar's elder sisters, Hinoka and Camilla, as well. Hinoka's described as the most caring person in the army, and it shows. Camilla, for allherissues is also incredibly kind and caring (especially towards the Avatar and Elise) and essentially fills the role of Team Mom on the Nohr side.
Oboro, despite her hatred towards Nohr, she can actually be a kind and reasonable girl at heart that allows her to be the Team Mom for the Hoshidan army. In addition, she also fits into the "Sweet" category should you make her the chef of your restaurant (which is also shared with Midori and Elise, both are also Nice Girls as well).
As befitting their Red Oni, Blue Oni/Boke and Tsukkomi Routine, Kaden and Keaton. The former loves helping and cheering people up with his fluffy tail, and must always return the favor whenever someone is nice to him; the latter is, despite his quirks, an otherwise genuinely pleasant, affable guy.
Effie is very gentle and devoted to those she cares for, especially her lady-of-liege Elise. Effie will protect anyone who needs it with her own life, especially her friends and allies, and sometimes even sufficiently sympathetic enemies, without any regards to her own safety. In Revelations, Azama pretty much calls her a Martyr Without a Cause for it, whereas Leo straight-up questions if she doesn't cherish her own life.
Benny. Despite his intimidating appearance, he's a genuinely sweet guy. He's noted to always be thinking of his comrades, whom he easily towers over. Additionally, he's a Friend to All Living Things, including bears.
The Avatar's child, Kana, of either gender, just like their parent. Both of them are more immature about it, but nonetheless both are as kindhearted as the Avatar.
Shigure, in contrast to his mother Azura's asocial tendencies is very helpful, kind, compassionate and willing to listen to other's issues.
Dwyer, again unlike his father Jakob, is despite his lazy, apathetic attitude, a genuinely nice and caring person as shown in many of his supports, though he apparently doesn't like being told he's nice.
Mega Man Volnutt from Mega Man Legends is probably one of the nicest protagonists of the Mega Man series. A defining trait about Mega Man is how nice and heroic he is. In the first game alone, he can donate to the town reconstruction fund, save a pregnant woman lost in the woods that goes into labor, donate to the hospital to help heal a crippled girl's leg, help the police with their cases, and of course, stop the Bonnes from causing chaos.
Welkin Gunther of Valkyria Chronicles is a quiet, sweet-hearted guy who likes nature and just wants to live a quiet life as a teacher. When The Empire invades Gallia, he becomes the leader of the Squad 7 militia force and quickly organises the ragtag unit into the single most powerful force in the Gallian military. He follows orders dutifully, doesn't commit war crimes, and is courteous and merciful even to his opponents. Just make sure you don't shoot his girlfriend.
You'd be surprised, but Connor Kenway of Assassin's Creed III is, despite his profession, a genuinely lovely young man. He's meek, he's idealistic, he's kind to animals, and he's passionate about making sure anyone he considers a friend is happy and well looked after regardless of their station or societal relationship with him. Now, compareandcontrast with his grandfather...
Samuels of Alien: Isolation is extremely polite and helpfully subservient to, well, just about everybody. This is the player's first clue to the fact that there's something not quite normal about him.
Papyrus from Undertale. Despite his massive ego and desire to capture the player so he can become a member of the royal guard, he honestly does grow to like the player and cares about them to the point that he insists on taking them alive even though they're going to be executed anyway. Try to insult him in battle and he simply interprets it as a front hiding a much nicer person who just needs to be warmed up to; do it after battle and he thinks you're insulting yourself. After his fight (if the player manages to spare him) he can be befriended into helping them on their journey and trying to stop Undyne from killing them, and will even try to get the two to become friends if Undyne is spared as well. Even if the player is a genocidal monster, he refuses to believe that there isn't some good to be found in them even if the player kills him. Undyne eventually admits that while Papyrus is more than skilled enough to be a member of the Royal Guard, he's ultimately just too nice to handle the responsibilities.
As is Jordis, who is given to you as a house carl if you help Solitude. Honest and sincere, interactions with her paint her as a utter sweetheart and cut dialogue (making her voice a popular choice for follower mods) has her give positive input into your actions, jokes about you whisking her away for adventure and how she just wants to find a nice man (or woman) to marry.
Dawnguard gives us Serana, a vampire Dovahkiin finds sealed away, and snarkiness aside is basically everything that vampires and the people in the Crapsack World of Tamiral are not. She's polite, supportive, a little shy, and honestly wants to help put a stop to her family. Dragonborn has the Skall, a entire race of nice guys who are tough as nails Nords living a nomadic life and habitually fight off anyone attacking wanderers of Morrowind before taking these adventurers in as their own.
Thanks to Overwatch's idealistic setting and themes, many of the game's playable heroes really live up to their name.
Gadfly tendencies aside, Tracer is an optimistic, friendly, and kind-hearted woman.
Reinhardt loves helping people and is one of the most honorable and kind members of the original Overwatch organization. This is to the point where the organization fell to corruption not long after he was forced to retire.
Genji was never interested in his family's organized crime, preferring to eat noodles and play video games instead. After his near-death and teachings from Zenyatta, Genji quickly became one of the least confrontational or hostile heroes in the game. He even forgave Hanzo for his failed attempt to brutally murder him.
Zenyatta himself has nothing but kind and encouraging words for everyone, even those who are outright racist towards him.
Bastion has little interest in actually utilizing his combat programming and weaponry, preferring to instead live peacefully in the forest amongst the wildlife, helping his bird friend Ganymede build nests on occasion.
Mercy is easily one of the kindest characters in the game. She hates violence, cares deeply for her teammates, and dedicated her life to saving as many lives as possible. Even though she abhors Overwatch's methods, she still wants to help them and keep them all safe.
Markus Kruber is notably the only person in his group of survivors that no one has any particularly negative feelings toward, and actively tries to keep the peace when the others start bickering.
Beck from Mighty No. 9, who cares for others, tries to avoid fighting (if possible), and tries to use his xel-manipulating abilities in a positive light. He even go as far as trying to purge the infected xels causing his Mighty Number siblings to go haywire in his own game rather than destroy them outright contrast to his spiritual predecessor, and the spin-off game Mighty Gunvolt Burst, felt regretful about fighting simulated versions of his siblings in Dr. White's VR program and wants them to be changed out.
The aging boatman Samuel Beechworth and Lady Callista Curnow are the prime contenders for the Nicest Guy and Girl in the original Dishonored, respectively. Samuel is a down-to-earth working-class man with a simple, but perfectly tuned moral compass, who will praise Corvo for going an extra mile to find non-violent approaches and dispense karmic justice on those who deserved it. Callista, meanwhile, sacrifices her own dreams to become a mother figure to the recently orphaned Emily and will actually physically fight Havelock when he decides his co-conspirators have outlived their purpose and captures Emily in his own bid for power.
In Dishonored 2, Aramis Stilton is pretty much the only person who neither turns evil on you, nor hides some dark secret. A poor immigrant who worked his way up from a miner to millionaire, only to continue working tirelessly to improve his workers' lot... too bad he is hopelessly insane by the time you meet him. If you manage to manipulate the past to prevent his insanity, he becomes one of the Big Goods of the game's ending.
Wu Zi "Woozie" Mu and Madd Dogg in Grand Theft Auto: San Andreas. The former is very nice and pleasant for a Triad gangster, easily befriending Carl and gladly aiding anyone that helped him in turn (with that said, he can be very ruthless to his enemies), and the latter is also friendly to CJ and the only retribution he exacts in the entire game is taking back his rhyme book and royalties from OG Loc's stolen work. After the last mission you can also hear him on the radio thanking Carl Johnson for bringing him back.
Florian "Bernie Crane" Cravic in Grand Theft Auto IV manages to be a happy, healthy individual despite having fought in a war that broke his childhood friend Niko Bellic. He tries to help him out by throwing out a fun trip (though it gets ruined by Dimitri's thugs) and rewards him for his support with a very expensive car. Should Niko decide to spare Darko Brevic, Florian will express pride on him for moving on from the past. Even if Niko kills him, he will still be happy that he can finally let go from the past too.
Hyde. Yes, really, he is actually a really friendly and generous kid who will always lend someone a hand if they're in trouble. Linne describes him as loud and having no delicacy in his speech but still being absolutely a good person.
Orie dislikes hurting people and often makes the point to spare her opponents in her victory quotes.
Despite everything about his appearance screaming "villain", Gordeau is a laid-back and chill guy.
And finally, Yuzuriha. Not even being an In-Birth can stop her ceaseless optimism and kindness.
Kokona Haruka, Amai Odayaka, and Uekiya Engeika are this big time.
Fureddo Jonzu, Oka Ruto, Muja Kina (shes a faculty member but still), Asu Rito, Akane Toriyasu, Senpai, Osana Najimi, Budo Masuta, Horuda Puresu, Hanako Yamada, Miyuji Shan, Midori Gurin, Mai Waifu, Saki Miyu, and the Basu sisters Sakyu and Inkyu are also pretty nice people.
Most of the school is pretty nice, however, the only students who arent are Yui Rio, Haruto Yuto, the delinquents (but thats because they give off a tough demeanour to keep themselves from being bullied), Gema Taku, Kizana Sunobu, Osoro Shidesu (who has a softer side), Aoi Ryugoku, and the bullies.
Red Dead Redemption II: Of all the Van der Linde gang, the two nicest gang members are Mary-Beth and Tilly. Best demonstrated by how they treat the captive O'Driscoll boy Kieran: the rest of the gang never miss an opportunity to insult him, Karen flicks a cigarette in his face, Sadie taunts him with a plate of food (which she spills at his feet) and constantly threatens to kill or emasculate him. Mary-Beth and Tilly? They offer him water when he's dehydrated. Mary-Beth is nice enough to give the boy water without being asked, and she also sits with him and tries to teach him how to read.
Arthur Morgan eventually develops into this after being diagnosed with tuberculosis. He becomes more emotional and polite, less sarcastic, develops a selfless side, and openly shows more care and compassion than ever before.