Deadpool is a Noble DemonSociopathic Hero. When he does good, doesn't do it out of Chronic Hero Syndrome: it's for personal gain (money, revenge, fame, women, or satisfying a whim), to placate his feelings of guilt, or because higher powers manipulate him into doing so. He once saved the world from losing its free will to an alien, mass-hypnotizing entity. In his first ongoing series, he flies into a psychotic rage whenever someone removes his mask (his "face") or infiltrates his house. He Wouldn't Hurt a Child, but he's completely disrespectful of adult life, downright sadistic, and willing to do pretty bad stuff for money. His self-justification is that his cancer-based Healing Factor makes his brain so messed up that he's completely insane and not responsible for his actions. He's both a Heroic Comedic Sociopath and a Sociopathic Hero. In later years, Deadpool has become more heroic compared to his old status as a Nominal Hero. To the point where he was the Only Sane Man and the conscience of the X-Men's Black Ops squad under Wolverine who thought that killing the kid who was Apocalypses' reincarnation is just wrong. Throughout the arc, he became more and more heroic too via Character Development, and even convinced the kid to join the Jean School for the Gifted so he can use his powers for good instead of evil.
Foolkiller is often described as a crazier version of The Punisher. However, Foolkiller's definition of fools extends beyond criminals. He also includes negligent mothers and their violent children, racists of any color, trash talk-show hosts, greedy merchants, hypocritical war protesters, exploitative businessmen, a university dean who, during a press conference, took a patronizing stance on the issue regarding insensitive sexist language, and anyone else who he thinks is a fool.
The Incredible Hulk: The Hulk, while always up to stop a bad guy and capable of empathy and loyalty, frequently leaves a trail of destruction on his path (though Marvel claims it's usually without victims) and clashes with other heroes. Considering, however, that the Hulk has a very "Hollywood version" of Multiple Personality Disorder, with a heavy dose of Depending on the Writer on top, it shifts wildly from incarnation to incarnation, individual interpretations thereof, and even deliberate Character Development. However, roughly speaking, the incarnations go as follow:
Bruce Banner: Varies Depending on the Writer, anywhere from a pure hero to Classical Anti-Hero, Knight in Sour Armor, or Pragmatic Hero, with Greg Pak playing him as the last category by lying to those close to him into getting his way. Not to mention putting innocent people including his own son in harm's way for his personal gain.
Original Hulk: Unscrupulous Hero. A grumpy outsider looking for a fight and responding violently when attacked, but staying out of people's way beyond that.
Savage Hulk: Knight in Sour Armor or Pragmatic Hero. Extremely noble, well-intended, loyal, heroic, constantly persecuted without understanding why, only wants to be loved and have friends, but cannot understand the society around him, protector of all oppressed peoples around the universe, will be inconsolable after watching Bambi or seeing a dead bunny, and strictly a force for good as long as somebody (like his former father figure Doctor Strange, or own, as opposed to Banner's, "the greatest love of his life" Queen Jarella) gives him a comprehensible direction. Basically the most pure-hearted and genuinely heroic version, but non-constructively constantly hunted like an animal due to his sheer scale of power without the maturity to handle it properly. Nowadays, tends to usually be treated more kindly by other heroes when he shows up.
Mindless Hulk in the crossroads: Unscrupulous Hero. A wild animal, but not inherently malevolent, and capable of instinctive loyalty or empathy.
Joe Fixit: Nominal Hero and Noble Demon. A largely amoral and hedonistic mob enforcer Villain Protagonist who mainly fought other villains, much like plenty of others within this trope. He also grew some conscience, such as grudgingly helping some children celebrate Christmas, turned loyal and protective of his friends, and towards the end apparently avoided using excessive force against army officers or similar attackers.
Merged Hulk: Knight in Sour Armor or Pragmatic Hero. Possibly the most well-adjusted incarnation, and genuinely proactively well-intended, actively dedicating himself to helping the world, without going to murderous extremes, and playing reasonably well with others. However, he still has as much a hot temper as any other Hulk, is prone to cynicism and also tends to do his own thing just like them.
Bannerless Hulk: Unscrupulous Hero. Part of his mind was split from his body, and he started to largely act as the first Hulk did, although to a greater extreme, such as taking over an island for no particular purpose, although without harming anybody. Still, the army colonel pursuing him got wise on that this particular Hulk was different from the previous versions, was simply looking for attention, and caused less damage if the army stopped attacking him, so she told him off to his face, "left him alone" as he didn't really wish, and it worked out pretty well.
Green Scar: Roughly a Pragmatic Hero on Sakaar/basically a more responsible version of the Savage Hulk. Views are split about whether he was provoked into Unscrupulous Hero or Nominal Hero during World War Hulk (compare a sovereign nation being annihilated, and then strictly retaliating by going after those responsible, without any Hiroshima or civilian casualties involved), although despite his Roaring Rampage of Revenge casuing very inconsiderate property damage, he is still less bloodthirsty than the majority of pragmatic heroes.
Devil Hulk: Terror Hero and Well-Intentioned Extremist. He isn't called "Devil Hulk" for anything, as he dispenses justice in his own brutal way. Case in point, in Immortal Hulk, after Banner gets shot in the head by an obviously-terrified gunman trying to rob a convenience store to pay his debts, Hulk awakens in the dead of night and chases after him. We don't see what happens to the guy, but we cut back to him after the fact and his body is so destroyed that if he ever wakes up, he'll never walk again.
Hulk’s allies and family aren’t much better. His cousin She-Hulk was this originally before becoming nicer but is still terrifying on a rampage, his wife Betty Ross once a sweet young woman is now violent and bitter Dark Action Girl, his son Skaar is a bloodthirsty sword wielding savage who joins the Dark Avengers and his best friend and former Kid Sidekick Rick Jones becomes a destructive monster before being cured, getting killed, and resurrected as a creepy yellow-eyed gamma zombie.
Immortal Hulk: While previous Hulks usually ranged between Nominal Hero and Unscrupulous Hero, this one specifically seeks out people that have done bad things... and doles out his trademark punishment.
The Incredible Hulk (2023): The new Hulk personality makes even some of the most dickish Hulks like Devil and Joe Fixit look downright cuddly in comparison. He's rude, is utterly brutal towards those who bother him, has no real goals beyond minding his own business, and treats Bruce like a prisoner. Despite all of this, he's still got a tiny bit of a Hidden Heart of Gold somewhere under the monstrous form, as he won't kill innocents and leaps to their defense despite himself when they're endangered.
Iron Man. Originally a full-fledged hero, if soometimes a bit of a Jerkass(if a goodhearted one), Tony Stark has been operating in an increasingly grey moral area in recent years. His actions in Civil War (2006) in particular are severely appalling, and that's not even getting into his stints as a member of The Illuminati. He’s become nicer since then, mainly due to a certain Robert Downey Jr.performance affecting the comic version.
Moon Knight, occasional hero, frequently just a crazy bastard.
The Punisher is a Badass Normal, trenchcoat-wearingVigilante Man who often uses extreme amounts of violence to combat criminals. Why do super heroes fight super villains? Because the Punisher shot the lesser ones. Even more so in the MAX series, which has neither super villains nor super heroes. On one occasion, the Punisher killed two pimps, crippled four and stabbed another one in the eye in order to get information, only to find out that they didn't have it. Later in the same story, he disembowels a human trafficker, among other things. However, as an Antihero he's ultimately on the side of good, going after evildoers specifically to punish them for their actions against the innocent, as opposed to the evildoers themselves who spill innocent blood for profit and/or fun, and he doesshow kindness on several occasions, especially towards children.
Spider-Man: Spider-Man himself originally could be quite the self-serving jerkass at times. In one comic he gatecrashed Johnny Storm’s house party and picked a fight with Johnny just because he was jealous of the attention the latter got. Fans however complained to Stan about Spidey’s jerky behaviour in the fan mail section and soon Spider-Man’s negative traits were dropped and he became the All-Loving Hero we know him as today. Although certain writers (such as Dan Slott) turn him into a flawed Anti-Hero and even a Anti-Villain when Doctor Octopustook over his body in Superior Spider Man.
Sub-Mariner: Namor the Sub-Mariner, since the beginning. He's a month older than Batman, but nowhere near as influential. Usually moving between this and being an Anti-Villain.
The Thunderbolts were villains who wanted to pass as heroes, only to discover that Good Feels Good and ditching their megalomaniac boss Baron Zemo. While still not below using ruthless tactics, their moral changes went to "good guys" (Songbird and Mach-1, helped by them falling for each other), "at times good guy" (Techno, who was still with Zemo when the team turned on him, and is often just out for himself), and "why am I supposed to be good?" (Moonstone, a Psycho Psychologist whose ambition and selfishness always makes her fall into darker paths).
Eddie Brock, the Symbiote's primary host, was originally a straight-up villain before becoming an Anti-Hero (well, of a kind, anyways...) and after his stints as Anti-Venom and Toxin has been trying to make the leap to full heroism, with mixed results.
Angelo Fortunato, Mac Gargan, and Lee Price are all villains, and exceptionally insane ones at that.
Flash Thompson, by contrast, has successfully become a full-fledged Superhero later on and earned the respect of much of the hero community.
Cable, Deadpool's former Heterosexual Life Partner, debuted as a '90s Anti-Hero. As he became more intrinsically entwined with the Summers' Tangled Family Tree, he mellowed out... slightly. He still bounces back and forth, Depending on the Writer and what book he's in. Even at his most heroic, he's still a big believer in the ends justifying the means.
Wolverine has the occasional gentle moments usually inspired by either a Morality Pet or Love Interest, but he's still The Berserker of the X-Men for a good reason, and has one of the biggest body counts in Marvel. As he says in his Signature Line: "I'm the best there is at what I do, but what I do best isn’t very nice."
