The Ice King is a Psychopathic Manchild who cares about little beyond kidnapping princesses to force them to marry him... but he'll still save the protagonists lives from time to time, and occasionally bemoan that he can't figure out how to be their friendnote The Cosmic Owl tells him outright that its because he's a sociopath, but this seems to fly over his head, sometimes to the extent that it looks like that for all his needless cruelty and compulsive villainy, he's really just lonely. Must be his past as Simon Petrikov shining through.
The Earl of Lemongrab was shaping up to be this. An annoying, idiotic and childlike lunatic, but he loved his kids and was steadily forming better bonds with other people. Then he ate his brother, over a toy, and things went south big time.
All Grown Up!: Z, as shown in "Bad Kimi" and "It's Cupid, Stupid". He is not a jerk, but merely aloof and a bit distant, prefering to dress in a punk style. However, he's a good young man and he and his father donate to children frequently.
In fact it works better than with The Simpsons and Family Guy because you're expected to find him a jerk straight from the get-go, and unlike the others, he's not a constant Karma Houdini and does actually seem to learn a lesson at the end of the episode.
Azmuth is an Insufferable Genius and a Cynical Mentor who can easily turn out obnoxious, but the fact this guy tried to create something that he thought would bring peace in the entire universe should tell you he is not that bad...
Vinnie may be an egomaniac, but he would never leave his friends in trouble.
Carbine comes off as very judgmental and strict, but she is sometimes shown to care about Throttle and her main concern is to put an end to the wars and drought that Mars suffers.
Bill And Ben The Flowerpot Men aren't jerks, per-say, but they love playing pranks and can be somewhat insensitive. That being said, they're willing to apologize when they need to, and are perfectly happy to help anyone who needs it.
Blinky Bill: Danny Dingo has shown signs of this, like in "Blinky And The Magician," where he gets a horrified look on his face as the kids fake their own torture. Also, Blinky himself counts as one.
The Boondocks: Uncle Ruckus is shown comforting Jasmine at the of the episode "A Huey Freeman Christmas", after she had been told multiple times that Santa Claus didn't exist.
The Brave Little Toaster: Kirby acts like the only person he cares about is the Master, but when his friends fall down a waterfall, he jumps right in after them.
The Buzz on Maggie: Maggie may act selfish, make bad decisions, and act self-centered at times, but she shows that she cares about her family & friends and will do anything for them.
Sissi Delmas, the Lovable Alpha Bitch. Ironically, she wasn't always a jerk; she and Ulrich apparently got along somewhat better before she betrayed the secret of Lyoko... an event she has absolutely no memory of. To his credit, he's the one who initiates her into his group of friends in the series finale.
Ulrich is one in the prequel, but apparently got better after he started teaming up with the others and became a Lyoko-Warrior. He still has some shades of it though.
Jim also qualifies, at first seeming to be just a Drill Sergeant Nasty gym teacher, he ultimately shows that he cares alot more for the school's students than he lets on, and even nearly pulls a Heroic Sacrifice for their sake.
Codename: Kids Next Door: Numbuh Four likes fighting, is insensitive, and has a history of bullying, but it's clear he's loyal to his team, especially Numbuh Three. He's agreed to sing a mushy song he despised, faced his fear of water, and ran into the heat of battle all for his friends. It's even stated he took Numbuh One joining the Galactic KND in the finale the hardest.
Dan Vs.: Dan. Although he is a massive Jerkass, he does also have several Pet the Dog moments with his kitten Mr. Mumbles whom he genuinely cares for, and when some of the targets in his crazy revenge schemes actually turn out to either be even bigger jerks than he is or outright villains, he sometimes will wind up helping their victims out (such as in "The Fancy Restaurant" or "The Wild West Town".) He also has a massive soft spot for animals, and even released lobsters from a restaurant when he learned they were going to be boiled alive.
Daria is often a textbook example, despite her endless snarking and being incredibly rude to most characters on the show, she clearly never tried to ever hurt someone even if she made jokes about a gruesome death for them, quite frequent with Quinn who she ended up bailing out and teaming up with on a few occasions. This was even apparent on Beavis And Butthead. Despite being mocked by the titular duo she tolerated them far more than any other character besides Van Driessen, and it was sometimes implied that, while he never ceased in his mocking, she was the only person for whom Butthead had any level of respect.
DuckTales: Scrooge may be greedy and cheap, but it is shown many times that he does care about his family and friends. One good example of this is in "A DuckTales Valentine", where it turned out that his family was what he loved most of all and not his wealth.
Duckman: Eric Duckman comes off as an ass and a sexist most of the time, but he is shown to have a good side, as he will do anything to protect his children if something is bothering them, or if they're in danger, even if he doesn't always pay attention to them. And, as revealed in a flashback, he didn't always used to be a jerk.
Sarah may be a total jerk towards the Eds (and downright abusive/manipulative towards Ed), but she shows genuine kindness and concern over her friend Jimmy, she has a soft spot for Double D and, most of the time, she gets along well with Nazz. Deep down she does care about Ed, such as when, in one episode where the Eds were trapped in a "haunted" house and pretending to be attacked by ghosts, she squeals: "Somebody save my idiot brother!" and she actually hugs him at the end of the movie.
Kevin is the resident Jerk Jock who hates the Eds and always insults them. However he's nicer to the other kids and sticks up for them if the Eds do something. With three exceptions, he seems to be pretty generous with the mountain of jawbreakers in his garage (and it's worth noting that he was originally going to share some with the Eds before Eddy tried to pull his drawbridge scam on him). In a couple of episodes, Kevin can be seen getting along with Edd and at the end of The Movie he finally accepts all the Eds as his friends and offers them some of his jawbreakers.
May seems the most innocent of the three Kankers, and the Valentine's Day special shows her in a more sympathetic light. All three sisters are a very minor example, since they are usually just jerks and very rarely show their nice side. They become a more straight example in the movie where for the first time they try to help the Eds.
Eek! The Cat: Sharky the shark dog has shown his soft side before. He even hugged Eek in one episode.
Parodied with the one-shot character of "Kenneth, the badass mail clerk with the heart of gold", who gives half his paycheck to "orphans with diseases;" cue the touching music as Peter gives a heartfelt, approving nod.
Peter Griffin used to be this until he turned into a complete Jerkass. He still has his moments, but they're fewer and much farther between.
Now Quagmire seems to be stepping in to fill that void. Perhaps the best example of Quagmire's taking over this role is his relationship with MegGriffin. He seems to be one of the very few people on the show who actually sincerely cares for her, occasionally helping her out with her problems. She's also the only woman he's demonstrated an extremely uncharacteristic willingness to have a Jail Bait Wait for. In addition to that, he volunteers at a soup kitchen and became a surprisingly good father to his Doorstop Baby.
Stewie, especially to Brian.
Brian himself is a lot more selfish and conceited than before, but still has several redeeming moments to place him into this trope.
Garfield has several examples of this. The Garfield Show especially amps this trope up. He's still a gluttonous snarker, but he bullies Jon and Odie a lot less and actually goes out of his way to help others with sometimes little or no self-benefit.
Roy the Rooster from US Acres could count as this too. He's a self-centered arrogant prankster, but he will often use these very qualities to help his friends out of trouble and has moments of remorse when he feels he might have gone a bit too far.
On Goldie & Bear, The Big Bad Wolf, a.k.a. "Big Bad", is this mixed with Ineffectual Sympathetic Villain. Sure, he's regularly a pest to both the Three Little Pigs and Little Red Riding Hood. However, he schemes are rarely effective and when they do work, he's often regretful. He's also shown several redeeming qualities, including being willing to try niceness and being apologetic and helpful after realizing that he's acted like a jerk.
Dipper also exhibits traits of this due to his status as the Only Sane Man and the Deadpan Snarker. Mabel also appears to be a jerk to Dipper on several occasions, but it's all in good taste and doused with affection.
Green Lantern: The Animated Series:Guy Gardner is arrogant, womanizing and smug, but he's also very friendly. After disagreeing with Hal, he takes him to get wings and displays his affability, helping Hal get out of trouble, working together with him to stop the Manhunters, and helping him through a break-up. Even Salaak and the Guardians seem to like him.
Helga. She's generally rather rude and obnoxious, but we regularly see her go above and beyond for the general good (in secret - after all, she's got a reputation to uphold). Granted, this is usually just to help Arnold, but there are episodes where she does the same for her sister, Phoebe, and even Lila too. In general she's a lot nicer a person than she'll let herself let on (her reluctance to do so often makes her her own worse enemy, however).
Harold under similar conditions evolved from a childish bully to a troubled Kiddie Kid with a transparent Jerkass Façade. This reached a point he actually gained a crush on fellow Jerk With a Heart of Gold Patty, and if you have a problem with that, he'll pound you so hard it won't even be FUNNYYYYYY!!!!
Jane and the Dragon: Gunther is obnoxious to Jane (and occasionally the other denizens of the castle) and often uses underhanded tactics to get his way. However, he has also gone out of his way to right his meddling father's wrongs and usually ends up doing the right thing by the end of the episode.
Larry, Loopy's brother in the "Life with Loopy" shorts seems to always constantly tease his little sister, but it's shown that he has a big heart and really cares for her (messing with Loopy's his Berserk Button).
June, from the Henry and June bits. She frequently picks on and sometimes even injures Henry, her best friend and co-host, and (starting in Season 2) is very prone to deadpan, snarky remarks. However, she cares about him a lot (to the point of having a crush on him), can't stand to be away from him for a long amount of time, and almost always makes him feel better when he's feeling down.
Cotton Hill is a jerk and a sexist most of the time but he does show that he has a good side such as when he took the blame for Bobby burning down the church by accident, got a job to support his second wife and infant son, and even though he doesn't like her he helped Peggy to walk again after she broke her spine. Also while he rarely has a single nice thing to say to his oldest son, Hank, he doesn't wish the worst for him, "not yet" anyway.
Dale Gribble. Shallow, selfish, tactless, cowardly, unethical and quick to blame everybody and anybody else for whatever problem he caused. However, to say he "loves" his wife and son is a huge understatement. He dotes on his son Joseph, even though he isn't even Dale's biological son, putting him before everything else in the universe and defending him with his life despite his cowardly nature. He worships the ground his wife walks on and treats her like royalty, which she does not even deserve, having cheated on him for fourteen years. Also, on numerous occasions, he risks his life and/or sacrifices himself for Hank. For example, secretly switching Hank's low-running oxygen tank for his own full one before going to put out a fire. And when Bill tried competitive eating, Dale (based off personal experience), warned him that it is an awful way of getting people to notice you.
Khan Souphanousinphone. He may be a nasty, sharp-tongued elitist whose main purpose in life is to mock and look down on his neighbors as a bunch of hillbillies, but he has a very, very fierce integrity to his values, a deep sense of duty, and doesn't take injustice from anybody. Ever.
The Land Before Time: Cera's bossy, she's egotistical, she's short-tempered, and she'll always come through for her friends.
Toph's daughter, Chief Lin Bei Fong is a definite hardass and comes across as overly harsh and bitter most of the time and greatly dislikes Korra. However, she is legitimately interested in keeping the peace in Republic City and proves herself to have a compassionate side as well as being completely selfless when she performs a Heroic Sacrifice to give her ex-boyfriend and his family (which he started with the woman he left her for) time to escape and also refusing to give up Korra's location to Amon at the cost of her bending.
Prince Wu in Season 4 isn't particularly mean, but he's flighty, flirtatious ditz with a massive ego. However, underneath it all, he's a guy who genuinely cares for people and, at the least, is nowhere as bad as his great aunt. And as Character Development kicks in, the Heart of Gold is more prevalent.
Lite Sprites: Bleak seems like she doesn't care about the other sprites, finding their ideas of fun to be lame, but when her friends are in trouble, she instantly leaps into action.
Little Princess: Puss can be quite mean to Scruff at times, but still seems to like him on the whole. Perhaps the most notable example is in "I Want a Pen Pal" - when Scruff loses his squeaky bone, Puss somehow manages to type up a letter and order him a new bone through the post.
Robinson Cruesoe in the short cartoon "Molly Moo Cow and Robinson Cruesoe". Initially, he is openly hostile and drives Molly away from the island just so he can be alone, even though he admits she's a nice cow. He comes around and befriends Molly once she saves him from a tribe of cannibals.
Mr. Bogus: Brattus appears to show shades of this. While he may act like a rambunctious Bratty Half-Pint 99% of the time, he actually does have his genuinely nice moments, such as at the end of his introductory episode "Et Tu, Brattus?", where he actually goes to the trouble to present Bogus with a cake to show him that there are no hard feelings between them.
Rainbow Dash is hot-headed and can be a bit arrogant sometimes, but her heart's in the right place and she's loyal to her friends no matter the circumstances. She's also shown to be a very good motivator in most episodes, especially to Fluttershy and the pegasi in Hurricane Fluttershy where she coached them all, and got them all back in the air after failing to rise the water up to Cloudsdale the first time. Then there's some episodes where she's neither Hot-Blooded, nor arrogant and is genuinely wanting to help her friends.
Spike is a bit of a slacker and has quite a bit of attitude, but he's a good guy underneath it all.
Fluttershy's bunny companion Angel is frequently pushy and obnoxious, going so far as to act like a spoiled child in "Putting Your Hoof Down", but it's been shown he does care for Fluttershy, doing things like reminding her of her appointment in "A Bird in the Hoof", comforting her when she was feeling down in the dumps in "Hurricane Fluttershy", and following her all the way to the Crystal Empire in "Games Ponies Play" because he missed her.
Rarity is a moderate example, she can be extremely vain, and is rather materialistic. Bearing the Element of Generosity, she gives as much as she takes in that area however and is one of the more consistently friendly and sociable of the main ponies. This standard is acknowledged and upheld sternly by writers, one of her spotlight episodes (what would later become "Spike At Your Service") was rewritten completely with another character because they feared it would develop her to close to an outright Jerk Ass.
Cranky Doodle Donkey is a grouchy loner, but is genuinely grateful when others help him out, keeps mementos of past places he's visited, and softens up quite a bit after he meets up with Matilda again.
Twilight Sparkle can come across as this. She frequently treats Spike, her assistant, like a piece of furniture, has spent entire episodes harassing a friend for pride-related reasons (Feeling Pinkie Keen springs to mind), and can be very condescending and sarcastic at times. Despite this, she genuinely cares for her friends and Spike, and regularly hurls herself into danger for the good of others, be it holding off an Ursa or charging headlong at Nightmare Moon.
After his reformation, Discord becomes this. Sure, he still trolls the ponies for his own amusement, but he does help in his own twisted way. In the Season 4 two-parter, he taunts Twilight Sparkle over choosing to head back to Canterlot instead of helping her friends save the Tree Of Harmony. Plus, he leaves out the fact that he technically was the one who started the mess in the first place (it was long before his reformation, though) so that Twilight could learn a lesson about being a princess. This culminates in "Twilight's Kingdom" where after betraying the ponies to Tirek gets himself sold out, he shows poignant humility towards the ponies, admitting he doesn't deserve their friendship and earnestly showing his appreciation.
Soarin and especially Spitfire as of the episodes Wonderbolts Academy and Newbie Dash could qualify too. While they may strive to be the best, and mock their teammates, it's intended to be friendly teasing, and they reveal they're Not So Different from Rainbow Dash giving into peer pressure, while at the same time genuinely caring for their friends and willing to step up to be reasonable authority figures when they are needed. They even reveal they were also hazed as was Fleetfoot and a few other 'Bolts on their first days as Wonderbolts with Spitfire saying "You don't wanna know." when talking about her nickname. Spitfire's even got the excuse of not being good with kids and her drill sergeant nasty persona being the only thing she knows due to being raised by the military. While Soarin has been shown to be nicer and more down to earth like post Season 2 Rainbow Dash at most times, he still qualifies as this in Newbie Dash having given into peer pressure. It is for their similarities that many people ship Soarin with Rainbow Dash or Spitfire.
The Nutcracker Prince: The Mouse King may qualify for the hint when he returns Clara's slipper after arriving to her room the next night, despite his grudge on her.
Peanuts: Lucy Van Pelt is somewhat a Jerkass in almost all specials and comics, but occasionally, she has shown to care for others. For example, in It's the Great Pumpkin, Charlie Brown when Linus does not return home from the pumpkin patch by 4:00 A.M., Lucy gets out of bed, walks out to the pumpkin patch, leads her brother home, and puts him to bed. Furthermore, it was her who named Charlie Brown the pageant director in A Charlie Brown Christmas with no apparent ulterior motive. And the fact that it's her who utters the titular line at the end of You're a Good Man, Charlie Brown is just one big Heartwarming Moment.
The Penguins of Madagascar: King Julien is mostly an Incidental Villain whom the other characters tolerate when he's not doing anything antagonistic, since he's not generally a bad guy, just a spoiled jerk who occasionally screws with people to get his own way. But now and then, he has his moments of being less jerk-ish, including saving Skipper's life.
Peter Pan & the Pirates: Peter Pan is often a selfish, arrogant, egotistical jerk who sometimes rudely interrupts his friends or causes conflicts with other beings with no intention of apologizing leading to him and the others to face their wrath, but he has shown that he cares a great deal about the Darling children, the Lost Boys, and Tinkerbell risking his life to save them from potentially dangerous or deadly situations.
Phineas and Ferb: Pretty much any recurring jerk turns out to be this, but Buford may be the clearest example. He was a genuine bully in his first appearance, but "Raging Bully" gave him his own odd honor code, "Voyage to the Bottom of Buford" showed him to be incredibly lonely, and after that he basically became a cross between Punch Clock Villain and Token Occasionally Nasty Teammate. Becomes downright heartwarming in the Christmas Episode (his Christmas wish is simply that his friends think of him as a nice person) and "Summer Belongs to You" (he purposely loses his own bet to help the group get home in time).
Leonard McLeish is an acerbic, clueless social-climber who, despite repeatedly stating that he hates his job as head dog-catcher and wants to move on to bigger things, was shown to really care for the dogs of Shelter 17 in "McLeish Unleashed".
Agent Ping. She is first properly introduced in "Mutternal Instincts" as mostly a Jerk Ass who only showed a nicer side at the very end when noting she enjoyed herself during the episode's adventure and says she and her fellow agents should do it more often. in "Hail to the Chief" Ping Took a Level in Jerkass in the way she acts towards Strudel. But when she is called out on this, she reveals that she acts this way because of the stress of her job and apologizes. Then, Ping promptly becomes a Jerk Witha Heart Of Jerk as she still acts superior to the other Pound Puppies, basically taking back her apology and receiving Laser-Guided Karma. And she wasn't particularly jerky in her final appearance. Only doing her job and completely agreeing with Dot, Dolly and Dash Whippet that Lucky did the right thing by telling Dot he can talk.
Spinelli is hot-tempered and sarcastic, but will always stand up for her friends.
Miss Finster, as revealed after season one. She shares quite a few sweet bonding moments with fellow example Spinelli when she's having trouble with her friends. These get a nice little Call Back in "Recess: Taking the Fifth Grade" when Miss Finster once again helps her out.
"Women of power like us, we're not allowed to have feelings."
While Mordecai often bullies Rigby and slacks off, he's consistently shown to be one of the nicer guys on the show.
The Ren & Stimpy Show: Ren Höek was this before John K. was fired. Despite yelling at Stimpy a lot and smacking him around violently, he was often shown to have a soft side, and genuinely care about his friend. (In one episode, he was even seen getting upset when he saw Stimpy feeling upset, and attempts to coax him into happiness by suggesting time on his irritating hobbies, all of which Ren despises otherwise.) In the Games Animation developed seasons, the selfish, psychotic side of Ren mostly took over, though his softer side reemerges on rare occasions.
Otto has been known to be an egocentricCompetition Freak, but he has stepped in and helped out his friends when they needed it on several occasions, including helping save Reggie's birthday party, helping Sam maintain a false image of being an awesome rollerblader on the news, and getting a street hockey game postponed so Reggie wouldn't have to choose between it and an all-state volleyball tournament.
As much as Lars loves tormenting the Rockets, he really cares about his little brother Twister deep down, not letting his friends insult him (only he can do that - it's a brother thing) and feeling genuinely sad when the Rockets faked his death.
Rocko's Modern Life: In the Season 2 episode: "Crusin", it was revealed that Grandpa Wolfe's full name was Hiram Willy Wolfe. When the ship was stuck in the Bermuda Triangle and when Rocko drowned in the ocean, Grandpa Wolfe finally found his conscience he at last rescued Rocko, after getting off the ship, they both decided whether to become friends or simply just go about their separate ways.
Rugrats: Angelica Pickles is the primary antagonist most of the time, she has alot of nice moments—such as when she admits she'll miss Tommy when he almost moves away, or apologizing to Suzie via a hand-made card. In the sequel series All Grown Up!, she's downright Spoiled Sweet most of the time.
Homer himself. While he has become the Trope Codifier of Jerkass, he really does love and care for his family, as he gets really upset when they're mad at him. He also goes to unbelievably insane lengths to help his friends out.
Bart Simpson, who is well-known for the mayhem he causes in Springfield, although this is mostly done to drive authority figures crazy, rather than cause any real harm. He gets a number of Pet the Dog moments in helping people he'd normally antagonize, like when he noticed how his teacher Mrs. Krabappel was lonely and depressed. He cheered her up by nominating her for a prestigious teaching award, stating that she deserved to win because she'd managed to survive teaching him. The judges are shocked to realize that Bart is real (being so infamous that many teachers think he's just an Urban Legend), and declaring that if Mrs. Krabappel's managed to "dance with the devil in the blue shorts and live", she's a shoo-in for the award. Mrs. Krabappel is very happy.
Nelson Muntz the bully, who's beaten Bart up for arguably noble reasons, including "wasting Teacher's valuable time", "besmirching an innocent girl's name" and "taking credit for other people's work". Even if Bart was Misblamed on all three occasions, it's the thought that counts. On a slightly less skewed sense, he has been shown to have an on-off friendship with most of his "victims" and even helps out Bart on a few occasions. There are some occasional implications that he merely plays a bully as a Jerkass Façade.
Groundskeeper Willie is pretty much the poster boy for the Violent Glaswegian, but he's shown a soft side on more than one occasion. Not only does he fight a wolf bare-handed to rescue Bart, he even comforts the wolf afterward and shares a drink with it.
Selma Bouvier is a thoroughly Obnoxious In Law to Homer, and was a bully toward Marge as a child, but she has moments of kindness toward him, she does care for Marge, loves her pet Iguana and her adopted daughter Ling, and many episodes about her revolve around finding someone to love.
Sadie's belief about the more rotten side of Lars' personality is that he's putting up a front. A few of his spotlightepisodes does back this up.
Sadie: I can't get the thought out of my head that you’re a good person.
Pearl displays the most traits of a noble bigot and has a hard time taking people's feelings into consideration, but she loves her friends and has made an oath to protect Earth from the Homeworld Gems.
Amethyst steals, is quick with insults, and is the first one to laugh at misfortune yet pals around with Steven the most and is the most willing to form friendly relations with humans.
Onion may be a huge troublemaker, but he isn't entirely a bad kid. He's shown to behave well when he's around his parents. He also values his friendship with Steven according to Vidalia. At the end of "Onion Friend", he even gives one of his many Guy and Gal figures to Steven.
Peridot gradually develops into this as her Enemy Mine with the Crystal Gems evolves into actual friendship. She's still not good at telling what is or isn't going to hurt people, but she seems to actually mean it when she apologises and has even managed to overcome enough of her prejudice against fusions to get along pretty well with Garnet.
Lapis Lazuli is the proud owner of a deep, bubbling pit of rage directed against other Gems, at one point stealing the oceans across the entire planet in order to get what she wanted, but she's willing to choke her anger down for Steven's sake and has begun to learn some measure of forgiveness towards her former enemies.
Baloo is an egotistical Ace Pilot that has an occasionally unhealthy obsession with his plane, the Sea Duck. It's made clear from the pilot episode, however, that he'd sacrifice it in an instant to save his friends and surrogate family (especially Kit).
Rebecca also fits this trope, a pompousControl Freak that has nothing against using her ownership of the Sea Duck to exploit labour from Baloo for her cargo company. She is also a class-A Mama Bear (literally) to her daughter Molly and is shown to make equal sacrifices as Baloo to protect her employee and best friend.
Taz-Mania: the normally selfish Digeri Dingo has a "noble dog" side to him and Jerkass Bushwacker Bob once saved Taz's life from a haunted hotel.
Red X has moments where it's clear that as much as he's a thief who unabashedly enjoys committing crime, he's not a villain in the superhero-world sense of the word. He's mocking, sarcastic, and selfish... yet he chose to save Robin's life and help him protect Jump City from being disintegrated rather than make a clean getaway, and deliberately made enemies out of a bunch of villains of the week for Robin's sake. So maybe not a heart of gold, but at least tarnished silver.
Robin himself qualifies at first, but matures into a more level-headed person over the course of the series.
Raven does snark like there's no tomorrow, but nobody would question her desire to do the right thing.
James is even more of a narcissist than Gordon and usually extremely arrogant and insulting to the other "common" engines. He does show humility over some of his actions however, and does try to be helpful and kind on several occasions, especially in newer episodes. Despite rarely having a nice thing to say about Toby, he is perfectly sympathetic to his cowardice over the Whistling Woods for example, and guides him through all it's supposedly scary residents.
Henry, like Gordon and James, has his rude and arrogant tendencies and picks on the other engines along with them. However, he appears to be more nicer and sympathetic than Gordon and James and is willing to help anyone. In later episodes, he becomes far less pompous and rude. In Blue Mountain Mystery, he looks back at his arrogant behavior with utter disdain.
From the Narrow Gauge Railway, Duncan is reckless, stubborn, rude, and often complains about his work, but on rare occasions where he doesn't get hit by Laser-Guided Karma for his bad behavior, he warms up on a few occasions such as the time he became apologetic and friendly to Rusty in Rock & Roll and was quite tame when Skarloey tells him the story about Rheneas in "Gallant Old Engine" which made him more appreciative towards the passengers.
Also from the same railway, while he doesn't show it often, Sir Handel does have his moments of showing his soft side to others. This is mostly towards Peter Sam or Duke, whom he had lived with since Mid Sodor days.
Diesel in the older seasons hates steam engines and believes that diesels will take over the railway. By the later seasons, he tends to get a Pet the Dog moment roughly Once a Season. His antagonism towards the other engines remains, but he will occasionally admit a begrudged respect for steamies such as Thomas. He even lampshades in "Disappearing Diesels" that he simply doesn't know how to be nice, even if he tries.
Top Cat, who is very close to his friends despite his sarcastic attitude.
Rattrap. He whines, he moans, he mocks, he groans. He openly voices his disdain regarding missions and is the most cowardly member of the Maximal crew. Yet, he is possibly Primal's most loyal cadet and, though reluctantly, always eventually accepts his missions. You can always count on Rattrap to do the right thing... Even if he's complaining about it the whole time.
Dinobot. Sure, he may be a backstabbing brutish Proud Warrior Race Guy, who regularly expresses his disapproval of Optimus not finishing off his opponents, but everyone knows where he stands note up wind of Rattrap, by preference and his death defending Proto-man is generally considered the Crowning Moment of Awesome for the entire Transformers Franchise.
Trollz: Ruby fits the mold; while being a Spoiled Brat at times and too stubborn for her own good, she has her friends' well-being at heart and if something is seriously wrong, she'll apologize and try to help.
Brock Samsonis a Heroic Comedic Sociopath with a heart of gold. After OSI wiped Billy's memories, Brock took him to Pete White, so White could help take care of Billy. He also deeply cares for the Venture Brothers.
Brock's heart of gold wasn't hidden quite as well as Rusty's. It took four seasons for it to finally show itself.
Winnie-the-Pooh: Rabbit is as close as the Hundred Acre Wood gets to an Only Sane Man, as well as being one of the resident Butt Monkeys, along with Eeyore. He reacts like any sane, hard-working adult who has to put up with the hijinks of Pooh and Tigger would. In Find Her, Keep Her Rabbit takes in an orphaned baby bluebird named Kessie and raises her himself.
Stella is vain, a bit airheaded and can be shallow, but she genuinely loves her friends and has no problem risking her own safety for theirs. She is also a very spoiled princess, but she clearly has no problem with commoners, as shown by how she is immediately eager for Bloom to attend Alfea with her and practically dragged her on a shopping spree to find a dress for a dance.
Riven is not as clear, but, as bad as he may be at showing it, he does care about Musa and does try to be nice to her (though sometimes, she's stubborn). He was also the one comforting the girls and Timmy when Tecna disappeared into the Omega dimension and they believed she was dead.
Bloom is milder than the above two, but she still fits. She's ill-tempered, somewhat self-centered, and occasionally acts childishly if she doesn't get her way (though she whines rather than having an outright tantrum). Nevertheless, she is undoubtedly loyal to the people she cares about and if any of those people are threatened, she will put that temper to good use.
Cornelia Hale, although in the eyes of some fans of the comic she came off as too much of a pure Jerk Ass due to an alleged attempt to make her more similar to the stereotypical spoiled rich girl. Even in the comics, she had some pretty strong Bad AssAnti-Hero tendencies— robbing an armored car for the sake of the man you love is pretty hardcore—although it took place in an Alternate Timeline.
And while on the subject of the comics, Orube could also be seen as a Jerk Ass, Jerk with a Heart of Gold, or Bad AssAnti-Hero. An extreme good character, she is very loyal to the other guardians, to the point of beating the shit out of anybody who might get in the way of her helping them, including the police.
Lance. He moves in with the Brotherhood and in his first appearance thinks nothing of manipulating Kitty Pride into stealing test answers for him. However, He became a saint in Season 2. In Season 3, he returned to being a thug, or a 'hood' as Kitty put it. But in the Season 4 episode "No Good Deed", he saved an old woman from a train crash and later cleaned up Pietro's mess, showing that, after being all over the place, he has gained some sense of right or wrong.
Gambit was amoral, narcissistic, and quite sarcastic, and even kidnapped Rogue, and threatened to blow up a train when she tried to escape, but then took her to Mardi Gras to cheer her up, talked to her about her adopted mother and compared it to his relationship with his father (And makes it clear how much he hates said father). It was revealed he only did this to manipulate her, but only to save said adoptive father and got rather defensive when his father showed an interest in Rogue's power.
Magneto formed and then abandoned the Brotherhood, had a rather blunt vision of 'Survival of the Fittest', locked his daughter up in a mental institute and abandoned his son (As well as Mind Rape to his daughter to make her forget about it all), and revealed mutants to the world. But he spared Wolverine, Nightcrawler, and Rogue when he was about to kill them as a thank you for Nightcrawler allowing him to restore his youth and to Wolverine for saving him from the Holocaust during WWII, and then devoted his efforts to, instead of wiping out mankind, stopping Apocalypse and showed at least some care for his Acolytes and children.
Toad was a thief, a jerk, a narcisist, and an all around ass who once ruined Kurt's first impression to his Girlfriend's parents by stealing his Imgae inducer, and had a few moments of almost stalker-ish attraction to Wanda, not to mention his Kick the Dog moments of attacking Nightcrawler and trying to leave him trapped in another dimension, but he did honestly care for Wanda, and only stole Kurt's image inducer so she would actually give him a chance and was deeply upset by her constant rejection, not to mention his Butt Monkey status.
Young Justice: Superboy is pretty abrasive and starts out a Smug Super with Cloning Blues. He also ends up being one of the more heroic and compassionate characters in the series, to the point that he could be considered The Heart of the team.