Alas, Poor Scrappy: Alejandro. Though general opinion was that he was a flat character whose main focus was his relationship to his sister, you still have to feel a pang of sympathy for him as he was unable to keep said sister from falling under Sylar's thrall and then got murdered by Sylar when he figured out the lies.
Monica. Some fans hated her, while others thought she had an awesome super power by mimicking other's actions. Her short time in the show is also up for contention on whether she had more potential or was better left behind.
Best Known for the Fanservice: Heroes is that show where a whole load of stuff about eclipses, helices, and conspiracies to take over the world keeps getting in the way of Hayden Panettiere being all bouncy, cheerleaderynote even though by the final season her character was no longer a cheerleader and indestructible and Zachary Quinto and Milo Ventimiglia being all broody and forgetting their shirts. And indestructible.
Better on DVD: Keeping up with the many Call Backs and Continuity Nods is much easier when all episodes are readily available. It's also easier to keep up with the extensive backgrounds and how each character is related to one another.
The Nathan and Sylar fans exited in droves and were baying for blood after the volume 4 finale. Those who weren't hopelessly confused, that is. And really, anything related to Sylar has this effect. That's because he's a Creator's Pet to half the fanbase and the best thing on the showto the other half.
Another case comes in those who wish it had ended after Season 1, those who wish it had after the second, etc. Seems the fans can't decide whether the show they loved has been dead for three years, a few months or whether it still lives on.
Speaking of Season 4, there was a massive divide during its production in regards to Claire Bennet's fanbase about the implications about her becoming a lesbian/bisexual, some seemed to praise the decision to have her "come out of the closet" while others claimed that there was absolutely no hint that she even had any attractions to the same sex in prior seasons, and in some cases, even in Season 4, and claimed that it was just a desperate marketing ploy and just overall bad writing.
Sylar is a completely insane serial killer, but he's so nonchalant about everything and can be quite funny. He's the only character who actually enjoys his powers and he's hilarious when he takes on a fake identity (usually just for fun).
Hiro Nakamura, the self-proclaimed "Masutah of Tahm ond Spehce"? The one character who takes Genre Savvy to new levels and wanted to be a hero from the start, who manages to break Suresh out of a psychiatric hospital while his brain is scrambled, among other things. The only reason Sylar hasn't been defeated by him is that Hiro believes he has to let Sylar exist. And the only reason Samuel is a threat is due to having a hostage. Not to mention he committed one of the most horrific vengeance in TV history.
Niki. Initially fairly warmly received by fans, she quickly wore out her welcome with her multiple personality subplot and causing the death of fan-favourite DL. Fans rejoiced that she died, only for yet another identical twin to come back because the writers felt that the show apparently couldn't go on without Ali Larter.
Ando, Hiro's best friend, is well-liked for his blase personality that balances out Hiro's excited one.
D.L., a badass whose main concerns are his son and wife. He makes it very clear that he doesn't wish to abandon Niki, but acknowledges that she's dangerous for their son. His death broke many fans' hearts.
The Bennet family's son Lyle (who doesn't do much, but shows proper concern for his sister's wellbeing) and adorable dog Mr. Muggles also qualify, and the latter has become more of an in-fandom Memetic Mutation.
Of the Season 4 additions, Emma is considered the most liked by the fans, given her storyline of coming to terms with her ability and chemistry with Peter.
Sparrow Redhouse. Before she became a major part of the Graphic Novels Rebel story arc she'd only had one brief appearance yet she was still a character fans wanted to see more of.
Evil Is Cool: Sylar. A serial murderer who steals other's powers via their brains, but awfully charismatic and played by Zachary Quinto.
Claire with Sylar and Elle (though more the latter than the former - she may have had a Cat Fight with Elle but it was Sylar who she stabbed in the stomachnote which would have killed him for good if he hadn't managed to get her power, jabbed in the skull with glass and plugged in the eye with a pencil).
Sylar/Mohinder and Sylar/Peter, given how much he enjoys messing with them. After all, he and Mohinder did go a road trip together and Peter spent a lot of time inside Sylar's head yelling at him.
Then there's Sylar/Elle which counts as canon Foe Yay, although it can be argued that this might be invalid, as they did have a prior romantic relationship before his Start of Darkness drove him over the edge. Still, he didn't seem to recognize her at the end of "Powerless" and she got really pissed when he murdered her father.
Sylar gets a lot of enjoyment out of making Angela uncomfortable as possible, even to the point of kissing her while voicing death threats at her.
Sylar/Danko, if only because Sylar seems to enjoy impersonating Danko a little too much.
Adam/Hiro and Adam/Peter goes here too.
Adam (to Hiro): You were more than a friend to me...
After Heroes Reborn, watching Matt take care of Molly is really sad, since she later kills herself to stop Erica.
In 2018, Christopher Eccleston revealed he came to America specifically because The BBC were trying to kill his career over his departure from Doctor Who. His first American work has him playing a man who narrowly survived an assassination attempt and now spends his days as a literal invisible man.
In-Universe: In "The Fix", Claire is looking for her biological family, and Zach suggests hopefully that she might have a rich, eccentric uncle. "Great," quips Claire, "an uncle."
Also Zach was supposed to be gay but this was not made known to Thomas Dekker. He would later go onto play a gay character in Kaboom!.
"Save the Cheerleader, Save the World" itself because Claire ended being the key driving force in saving the world from Samuel in Season 4.
Nathan and his ability to fly, after it's revealed that Adrian Pasdar is now the voice of Iron Man, a hero who can fly.
Hiro passes Sylar off as a doctor in "Once Upon A Time in Texas". Zachary Quinto does play a doctor on American Horror Story: Asylum. Said doctor is also a serial killer with issues even worse than Sylar's.
In 2006-2007, Zachary Quinto and Robert Knepper appeared in a photo shoot◊ together about villains for Entertainment Weekly magazine. Two years later, Knepper would play Samuel, the main villain of Season 4.
In a first season episode, Claire's brother steals the tape Zach made of Claire surviving a fall and healing instantly. He threatens to "put the tape on YouTube and make a million dollars''. Zach tells him "YouTube is free, you idiot!" Years later, it became possible for YouTubers to monetize their videos and make money that way, so he was probably on the right track.
The image of a disguised Sylar holding Mr. Muggles becomes even funnier after Zachary Quinto landed the role of Spock in the Star Trek reboot films because the original Star Trek series had Spock holding the Alfa 177 dog.
Speaking of "Save the cheerleader, save the world", it's hard not to think of the plot for Project X Zone due to one of the main protagonists being a cheerleader who is destined to save the world.
Near the end of the season, Claire has several Damsel Scrappy moments, fleeing from people who obviously had her best interests at heart and into trouble on more than one occasion. Ando's deciding Hiro would give up if he had one more conversation with his dad, and thus going to take on Sylar(!) alone (!!), isn't much better.
In Landslide, Peter Petrelli telepathically eavesdrops on Sylar's plans to enlist the police's unwitting aid in attacking Ted Sprague... and then does nothing when he's subsequently arrested.
In How To Stop An Exploding Man, Mr. Bennet warns Parkman not to confront Sylar because he'll kill you but one would think just telling him Sylar is telekinetic and has Ted Sprague's powers would be more viscerally persuasive.
The Company's method of controlling their superpowered prisoners. Depowering Sylar was a good idea, but leaving him alone and guarded by only one person, who he wanted to kill anyway with no means of knowing their condition, is roughly the worst idea imaginable. And Adam? Oh, let's just keep him in a cell. Next to the impressionable idiot with god-like powers. It's not like Adam has had decades to plan his escape or anything.
Also from Season 1 regarding the big threat of the season, kind of. Peter knew that if he went to Kirby Plaza, he would wind up absorbing Ted Sprague's ability, and he'd seen that he was the one who caused the big boom in New York on that November night. Does he then decide to stay away and ensure that there is no way he'll gain the power to become a nuclear bomb? Oh no... he goes right to the one place he shouldn't and, boom, gains the power which will blow up New York in a matter of days.
Basically every time Peter shows up on screen and forgets that he can teleport or read minds. Notable examples include not bothering to mind-read the villainous Adam to find out if he can be trusted.
Also, Peter Petrelli meets his father, Arthur Petrelli, who was presumed deaddespitethe fact he hasn't seen him in years and is the head [[spoiler: of a shady organization, does not stop to read his mind to understand what the hell was going on, and why he had disappeared for so long. Instead, he runs to give him a hug, and loses his powers (all of the ones he absorbed) to his father (who took in a lot of powers to begin with), launching the latter ever closer to A God Am I status, and the former being telekinetically thrown out a window by Sylar, as Arthur's way of saying "thank you" to his son. In fact, Sylar spared him death even if his idiocy didn't suggest so.
Arthur Petrelli absorbs every power Peter ever absorbed, which is a hell of a lot of powers, including teleportation, phasing, many, many ways to blast somebody to pieces, and healing, so they can't really hurt him back. In short, there's nothing to stop him from going over to Primatech and kicking everybody's ass. What's he do? He draws the future, and sends out his incompetent mooks to fail at doing his dirty work. Furthermore, he draws a future where Claire is dead, and he needs her alive. He could teleport straight to her, capture her, and teleport back to ensure her safety. What's he do instead? He sends out his two most psychopathic followers to capture her, and is surprised it didn't work. What an Idiot! indeed.
The third season finale and end of Volume 4 takes the cake. Having finally rendered Sylar helpless, do they finally kill him? No. They need Nathan to convince the President to end the project, and Nathan's just been killed by Sylar. So they use Matt Parkman to brainwash Sylar into believing that he's Nathan, and using his shapeshifting to support this. And the episode ends with Sylar having been left in this imposture for weeks. Angela Petrelli, Noah Bennett, and Matt Parkman are just having Sylar walk around in Nathan's role and life permanently and expecting everything to be OK. Why? Why not at absolute minimum dispose of Sylar the instant he's finished with what you needed "Nathan" for? Better yet, since Peter had already absorbed/mimicked the shapeshifting power from Sylar, why not just have Peter pretend to be his brother for a little while, convince the President, and then pretend to go missing or die? And above all else, why not at least tell Peter, Claire, et al that "Nathan" isn't actually Nathan, so they don't trigger inevitable disaster via their ignorance next season?!?
The fourth season's finale (which also turned out to be the last episode of the series) certainly qualifies. After living through the events of volume 4, which were the result of the government learning about people with abilities, and hearing her dad plea on his deathbed that he wanted her to stay hidden and not reveal herself, Claire is compelled to jump off a Ferris wheel to do just that in front of national television. No reason is given for this decision, other than pissing off her dad who had poured his heart and soul out to her roughly ten minutes ago. Meanwhile, every other character in the series simply stands there gawking and dropping forced dialogue such as "she's going to change everything!", even though half of them had the power to stop her without making nearly as much of a scene (looking at you, Hiro!). After spending several episodes building up how much Claire-bear loves her crazy daddy, they have her just throw it all away for no apparent reason while the rest of the "Heroes" stand around and prepare for a repeat of volume four.
Incest Yay Shipping: The Petrelli brothers are unusually close despite their roughly 13-year age gap, and then when factoring in Claire, who is Nathan's daughter, there's a lot of subtext. Didn't stop Milo (Peter) and Hayden (Claire) from briefly dating, though.
Iron Woobie: Claire. Aided in no small part by her powers, Claire never gave up despite all the pain and suffering the world heaped on her.
Jerkass Woobie: Elle. Even though she's really rude to people, you kind of feel a bit of pity for her when you learn that her own dad has been experimenting on her since she was seven.
Angela. Feeding an innocent woman to Sylar just so to get on his good side.
Bob Bishop. We learn he subjected Elle, his own daughter, to so much Electric Torture she snapped and went Axe Crazy. When she was seven years old.
Samuel has a killer one in "Once Upon a Time in Texas" - after spending the episode doing his utmost to save Charlie from Sylar, three years in the past, Hiro walks out to discover that she's been taken by Arnold, Samuel's time-traveling carnival member, at the behest of Samuel. Samuel reveals the entirety of the episode, including his previous attempts at goading Hiro into changing the past, have all been a manipulation to force Hiro to work for him, and to possibly prevent the death of Mohinder. Needless to say, Hiro is less than amused.
He hits a new watermark in "Pass/Fail," when he wipes a town off the map after getting dumped. He doesn't even have an excuse so much as he's just pissed.
Never Live It Down: Arguably the most fan-derided moment of the series was Peter Petrelli abandoning his Irish girlfriend Caitlyn in the bad future of Season 2 after accidentally time traveling away from her. While it can be chalked up to the characters changing events so that the bad future and her by extension no longer exist, that's almost worse. It's especially grating because once Caitlyn was left in the bad future she had become a Living Macguffin that fueled a lot of Peter's Idiot Ball moments in Season 2. Maybe it was the Writer's Strike that derailed this and there just wasn't enough time to film a resolution scene but not even a mention or Hand Wave about what happened to Caitlyn in the following seasons just made the writers look incompetent.
The opening of "Collision" treats us to a scene of Claire, supposedly dead after the events of the previous episode, having an autopsy performed on her. It's exactly as graphic as you'd expect: She's cut open, there's blood and a pretty nasty view of her internal organs. All that is horrifying enough, but then her Healing Factor kicks in, meaning that she wakes up with full awareness of the fact that her chest has been cut open.
Tracy Strauss for Niki Sanders. It didn't help that she was played by the same actress and that her character replaced someone who was already a Base-Breaking Character. Since the producers put her with Nathan, she's also a scrappy for anyone who liked Heidi. Really, the entire character is seen as an insult to the fanbase, especially to anyone who actually liked Niki.
Janice was seen as a replacement scrappy for Daphne, despite the fact that she was with Matt first. It doesn't help that she was a scrappy before she came back.
Most people agree that Peter Petrelli became much more likable after his God-Mode Sue status was undone as he was Brought Down to Normal, which forced him to actually use his brain and drop the Idiot Ball.
Superspeed knife fight! Okay, Peter, you're cool again. Shooting Sylar in the balls with a nail gun also helped.
How about Hiro? Popular in volumes 1 and then deeply annoying in 3 and 4 due to his development from the first two seasons being rejected in favor of him being a childish moron again. Then redeemed in 5 due to his cancer and Charlie arcs making him more serious again and him no longer appearing in every episode.
West and Claire in Volume 2. This relationship was not one of the show's more successful moves, not least due to West being the only person in the entire run who Claire had absolutely NO chemistry with, including Sylar and her UNCLE.
Maya and Alejandro were the least popular new characters in Season 2, largely because of their scattered plotline and Maya's overly emotional crying over her ability.
Janice: whether it's for replacing Daphne in Season 3/4 or being a huge bitch to Matt in Season 1.
Samuel. Perhaps the least liked villain on the show. Has the highest ratio of episodes/lack of interest.
Seasonal Rot: And how. This show is an often-cited example of this trope in time lapse. It's so bad and so blatant that it's borderline fascinating. The first season was widely regarded as one of the best, freshest pieces of television in years....then it went downhill faster than Daphne can run. It's become such a well known example that TV & Media College Professors could hold entire lectures about Heroes and how NOT to further a successful television show. While there are certainly other shows that go through Seasonal Rot, looking back it's surreal how Heroes writers somehow managed to make every possible ill-advised story decision or the laundry list of detested tropes they played completely straight (amnesia, long lost triplets, sudden paternity revelations and that's only a few!)
Snark Bait: There are entire LJ communities in which getting together every Monday night to watch Heroes - for the sole purpose of giving it the MST3K treatment - has become a ritual and a bonding experience. Wet Sylar, Carniawarts, Clairiett Tubman, Sylar Durden, Rainbow Brite Girl, Gretchward Cullen - we salute you.
So Bad, It's Good: The third season is like watching multiple train wrecks in superspeed. While on acid. Quite literally too, in the case of the ending of episode 3.16 ("Building 26").
Strangled by the Red String: Matt Parkman and Daphne in Volume 3, because Matt saw a future vision of himself married to her, and started going after her Because Destiny Says So. She even asked what they had in common. Despite this, people prefer Daphne to Janice, Matt's wife/exwife/wife. Them getting back together is kind of an example because she reveals the baby is his and despite her cheating on him with his best friend, he immediately forgives her.
Toy Ship: Micah and Molly despite they interact only in Season 1 finale.
Unintentionally Unsympathetic: Noah. Really, most of his problems are his own fault, but he barely does anything to fix them. His backstory is that his first wife was murdered by a man with powers. Fair enough, but it doesn't justify that he treats his second wife and adopted kids poorly, ignoring them whenever possible. Not to mention he's responsible for why Gabriel Gray became to superpowered killer Sylar, but unlike Elle who saw good in him and wanted to help him be a better person, he pressured her into edging him closer into insanity and showed no regret for it. Every kill Sylar makes and every time he calls him a monster, he's conveniently forgetting he made him like that. When Claire is shot during a time she has no powers, he instead focuses on hunting down Sylar and Elle for it, ignoring her dying due to having no immune system due to a loss of her powers. He even joins Nathan's crusade to lock away all super-powered humans, despite having one of them as an adopted daughter he treats as his Morality Pet (she also happens to be Nathan's own daughter as well, but she's granted immunity from this crusade and is thus not a target) and promising his wife that he'd stop hunting these super-powered people. This broken promise ended their marriage. Not to mention some of the captured people were his friends. It gets bad to the point where Claire should really stop defending him, especially when he's done things even she finds unforgivable.
Wangst: Claire. Boy, she was bad about this for a long time during Volume One. Taken to ridiculous extremes in Volume Three, when her power mutates so she no longer feels pain and she spends so much time whining about not feeling human any more. Um, yeah, not feeling pain is a problem for normal people, since pain is the body's way of telling you that something is going to cause permanent harm if you don't stop it right now. But for a person with a nigh-unstoppable Healing Factor? Pain is just an inconvenience. Not feeling pain and instantly healing is a Game-Breaker of a combo. Stop complaining about it.
They Wasted a Perfectly Good Character: Elle. An interesting backstory, a past romantic interest in Gabriel Grey and holds regret that he became Sylar thanks to her involvement, ultimately forgives him for murdering her father and the two rekindle their interest and become a couple, not to mention it's implied she would give birth to his son. Thanks for blabbing Noah, now Sylar kills her despite how they felt about each other.
Attempted with Nathan Petrelli at the beginning of Season 2 (mostly by making him grow a truly horrificBeard of Sorrow) - a decision which pretty much led to a fandom revolt and was never referenced again.
What an Idiot!: Eden. Did it not occur to her that if she could use her power on Sylar, he could use his powers, too?
Brody in episode four gets this two-fold. The night before, he attempted to rape Claire which caused Claire to kick him and accidentally land on a log, impaling her. This caused Brody to drag her body and hide it in the river. Every thing seems fine until he arrives at school the next day to notice that Claire is completely unharmed. After school Claire comes to him and asks for a ride with the excuse that her original ride left without her. You'd Expect: Brody to realize that the girl he nearly raped and seemingly came Back from the Dead probably wouldn't want a ride from him and probably has other plans for him and decline. Instead:He gives her his car keys! The Result: Claire is now driving his car and remains indifferent to how fast or dangerous she is driving which is especially evident when Brody points out she ran a red light. You'd Then Expect: Brody to realize that given the fact that to his knowledge Claire has survived being impaled in the neck and dragged into a river where she would've drowned for hours on end Claire probably isn't too concerned with how she will survive an accident in his car. Maybe attempt to placate her by apologizing for nearly raping her, blame it on the alcohol or at least some excuse that doesn't make him out to be a complete ass. Instead: Brody calls Claire a slut and says he's already been spreading rumors about how she is a slut and asks her what she's gonna do about it. The Result: Claire accelerates the car way past the already dangerous speed she was going at and crashes Brodty's car into a brick wall resulting in Brody being badly injured.