In the DCU series 52, every issue had pencil layouts done by one artist, Keith Giffen, in order to keep this trope to a minimum. However, there were still a few minor slip-ups, the clearest example being Renee Montoya and Kate Kane. They were well-endowed but realistic when they first spoke to one another (They were still gorgeous, but it was manageable), but when they met in the park in the next issue they were both bulging out of their tops. The commentaries usually passed it off as exactly this trope, and not a deliberate attempt to titillate readers.
The length of the ears on his mask is never, ever consistent. Ever. You would not believe the disparity here.
There are lots of variables in Batman's costume: the color (gray vs. black vs. grayish blue, blue highlights or no), eyes (full white vs. actual eyes), and are just a few. Some are cyclical features (especially the colors), while others are done to match media portrayals (the all-black 90s costume is intended to match the Burton films). Plus, certain artists give him specific features: Howard Porter's Batman has elaborate "hooks" on the shoulders, for instance. The chest symbol (yellow oval with a bat in it vs. none vs. black bat silhouette on an otherwise solid-gray chestplate) is explicitly a separate costume item.
The storage system his belt uses (cloth pouches vs. rigid capsules vs. both), the fastening of his cape (under the neck vs. at the shoulders), the fins on his gloves (the length, shape and number of them vary wildly), how much of his face is revealed (The Dark Knight batsuit has a noticeably smaller opening, while Dick Sprang's drawings will have the entire lower half of his face showing), his size (ranging from a fairly normal height and build to the 7-foot-plus that was Frank Miller's Batman in Batman: The Dark Knight Returns), whether or not he has stubble, whether or not his fingertips have "claws" (fairly uncommon, but not unheard of), the length and shape of his briefs (range from nigh-thong to short shorts), whether or not the bat-briefs are separate from his tights or sewn on, the shape of his cape (ranging from an even bat-wing pattern to a tattered and torn look), how much of his facial expression shows through the mask, the shape of the eyes (occasionally look like triangular slits, seen in Year One and The Animated Series) and the exact structure of his boots (whether they're smooth and tight like the rest of his costume or bulky and thick like combat boots). Batman truly is the most versatile superhero, visually, due to the large amount of detailing on his costume and the simple motif.
The length of his cape is also inconsistent. A book on how to draw DC characters admits that this can sometimes be intentional; in an issue where he is going to be doing a lot of fighting, it is fairly short and moves easily to make his movements look smooth and dynamic. If however he is going to be standing around or posing on rooftops it is much longer and heavier, often long enough that it would drag on the floor without the dramatic wind.
Behind the scenes of some film versions it has been noted that there are several capes of several shapes and lengths depending on what looked best in any given shot. In other words, to make it look right, DOTA is so necessary that you have to replicate DOTA for the Live-Action Adaptation.
Then there's how much of his costume is "armor". Sometimes it looks like traditional superhero tights, other times there seem to be interlocking plates, and more rigid sections. Sometimes the armor is worn under the tights. Kevlar is canonically an important feature of his costume (especially around the chest), but plenty of times he has been seen removing his "shirt", with no evidence of any armor underneath or within it.
Gotham City itself varies a lot on the artist. It's managed to look like New York, Chicago, Detroit, Budapest, etc. Sometimes it's a realistic looking city, sometimes it's a stylized city, sometimes it's just flat-out dark fantasy. That's not even getting into its Geographic Flexibility and location...
Arkham Asylum seems to change design and location depending on what era, artist, and book you're reading. One of the biggest lampshadings about this is during Grant Morrison's Animal Man, when Buddy sees almost five buildings in the same place, all looking radically different.
Bat-Mite's Chest Insignia can be a misshapen bat-insignia, a lightning bolt or an M (likely the first one was the original idea).
One thing that has never remained consistent ever is Thomas and Martha Wayne's gravesite that Batman visits every other week. It regularly switches between being a tomb and a grave, or possibly two graves, having an angel on it, and/or placed near a tree. Even the way the names are displayed changes, it could be their individual names or just their last name, and there might be an epitaph.
Both incarnations of Batwoman were subjected to many artistic variations:
Kathy Kane's bodysuit was either a solid yellow, yellow with black trim in the front (with the top mimicking a bustier), or the darker trim depicted as yellow with black shading. The last option was presumably to make the darker part appear as a stylized gold, with the limitations of printing at the time. Her mask shifted between being colored red, yellow, or black with yellow or red trim at the top. In her short-lived return in the '70s, her batsuit gained a red bat symbol and her gloves suddenly became fur-trimmed.
The Kate Kane version of Batwoman started out with light auburn-red hair in 52, although her later appearances have her hair as a very saturated cherry red color (as well as her wig). Her eyes were also originally colored brown, but ever since her arc in Detective Comics and the Batwoman series, they have appeared as a bright green. Her skintone was also lightened considerably to be a "vampire porcelain white" by JH Williams, which has stuck for all later depictions.
Her costume was originally colored with blue highlights, though it has since been depicted as a straight black. Sometimes her mask will cover her forehead, while other times it will leave it exposed. Her gauntlets are alternatively drawn as being separate from her gloves (as with Williams' intention) or as a solid part of them.
Kate's stepmother Catherine/Katherine was also shown to be a blonde in a cameo in 52, while her appearances in the Batwoman series depict her with brown hair.
Kathy Kane's sidekick Bat-Girl had her dress length range from being past the knee, to it being much shorter and its skirt either being full or flat. Her mask also alternated between being red or black, and her gloves would tend to come and go.
In the New 52, artists seemingly can't decide what his hairstyle actually is, which is especially bad since the hair is the only way to differentiate the Bat-boys. At first, in Batman. it was spiky and at a decent length. At the same time in his own Nightwing series, it was just long. Then it became an overgrown undercut in Nightwing while Batman and Robin kept the previous look Nightwing had established note You can't even say Batman and Robin took place after the change in Nightwing, because his B&R appearance is explicitly shown to be after his hair changed in his own solo series. Finally, by the time of Grayson, it's consistent.
His Batman suit. Was it black or a dark blue? Once Bruce came back, some artists made it so Dick's ears were shorter (they were originally as long as Bruce's, but he launched them... yeah), and his suit was a darker blue in comparison to Bruce's all-black suit (at this point, Bruce's suit actually became consistent). There was also some effort to have his height be consistent comparison to certain characters, such as Superman and Donna Troy. I.e, Batman is shown to be about equal in height to Clark and taller than Donna, while Dick is noticeably shorter than Clark and about the same as Donna.
What did he wear as Robin: His signature shorts or pants more like future Robin's? It varies depending on the flashback and medium.
Red Hood's... hood. Within its own series it's inconsistent, never mind the other Bat books. Is it metal or clothe? Does it have a mouth or an Iron Man-esque pseudo-mouth? Does it have anything resembling a mouth at all? Are the eyes whited out or not? Is there a mask-looking paint job around the eyes? In the New 52, it has never, ever been consistent.
Jason's eyes are either blue or green. And not as in they became green after he died, as in, since coming back, he has had both eye colours.
The question of whether Jason was a natural redhead or brunette was answered differently by different colorists over the years in a very inconsistent manner.
Much like his mentor the length of his cape seems to change depending on what would look best in the issue at hand, and while he was Robin some colorists couldn't seem agree on just how the black outer side and yellow lining were put together.
Some artists drew his steel-toed tabi boots as just regular boots, probably because it was a way to cut a bit of time off drawing by not putting in the seperation.
Tim's height is incredibly variable with the only constant seeming to be that he's way shorter than Bruce when Bruce is on panel with him, shorter than Kon-el and taller than Damian.
Several artists like to give him really thick eyebrows but others keep them more in line with the brows on the rest of the Batboys.
Whether or not Tim's green Robin mask had rounded edges or scallops drooping from the outer edges depended entirely on the artist.
Tim's father Jack is usually depicted with dark hair that's mostly turned grey, but some artists give him light brown hair instead.
Damian Wayne had been getting a lot of this, to where some of his fans debate on who draws the best version. His height and build are relatively constant, but other things aren't as consistent such as:
His skin tone can be as pale as most of the other members of the Bat-Family, or darker if the artist remembers he has Middle Eastern heritage through Talia. Sometimes he even looks a bit East Asian, but the East Asian facial features aren't uncalled for because Talia's usually some vague combo of Arab and Chinese.
Eye shape varies wildly, as does eye color, which can vary between his mother's green and varying shades of blue.
The shape of his face widely varies, from sharp and chiseled like his dad to being rather round and babyish to even scrunched up due to his Perpetual Frowner tendencies.
How spiky his hair is and how many blue undertones it has (in the first 6 issues of Batman and Robin it was stright black or only had a few blue bits due to lighting, but in issues 10-12 it was almost completely blue no matter what the lighting). In Super Sons it's slicked up in such a way that it reaches Anime Hair levels when Jorge Jiminez is on board for the art.
The size of his mask changes at times, from small to DEAR GOD IT'S EATING HIS FACE!
Barbara has had an infinite variety of glasses between appearances in different books.
She also has a wide variety of wheelchairs. Some artists remember she's extremely independent and still a practicing martial artist, and give her a chair that reflects that (low sides so she's got room to turn, no handles at the back). Others just draw a generic wheelchair.
Does Babs have green eyes or blue eyes? It's rarely consistent, though most colorists have her as blue eyed.
Barbara's successor Cassandra Cain suffers from a HUGE version of this. Her height seems to vary from average to absolutely minuscule, and she's either incredibly muscular or thin and waifish. And that's not getting into the question of her eyes. Realistically, being half-Chinese, she would have brown eyes, and many artists follow that, giving her dark brown eyes. However, she is also often shown with green, amber, and occasionally even blue eyes. The nature of her scars also changes, with some artists depicting her as being Covered with Scars, and others showing her completely free of them, and others somewhere in-between.
Stephanie Brown's costumes as Spoiler, Robin and Batgirl were inconsistently drawn by various artists:
Her Spoiler costume went through various artistic interpretations over the years. Tom Lyle originally drew her with a large piece of shoulder armor that was attached to her chest sash, though it was phased out by later artists. Her boots and gloves would sometimes have armored bands worn on top of them, while other appearances would lack these. The size of her belt and the amount of canisters in it also varied, along with the length and style of her boots (sometimes they'd be the same length and style, sometimes asymmetrical). Her bodysuit and cloak ranged from being colored a deep purple ("eggplant") to nearly being more of a magenta shade or reddish-violet, while the "undies" worn on top would come and go as artists pleased. The mask and leather parts of her costume were either colored black with blue highlights, or a solid blue or black. The size of the lenses on her mask also varied from being small to huge and expressive.
As Robin, artists couldn't decide whether her hair spiked out, or if it was a little more subdued. She sometimes was also depicted wearing green elbow pads, and while most drew her wearing a red minidress as part of the costume, Pete Woods opted to draw a more unisex costume that resembled a slightly more armored version of Tim Drake's and that had gold thigh bands. As well, she seemed to be a bit more... pronounced during this time.
Her Batgirl costume alternated between being colored black with purple trim, or being a deep purple with lighter side trim. The amount of pouches on her thigh band also varied from artist to artist, while her boots could either be colored black, dark purple, or a lighter purple.
Stephanie's mother's appearance was subject to many different depictions whenever she showed up. She's been drawn as either middle-aged, slightly younger, as a blonde or brunette, either with a slimmer body or heavyset, and with or without glasses. However, the weight changes could be justified as her having been on and off drugs (which can be Truth in Television).
The Penguin's appearance can vary wildly from issue to issue. How obese and grotesquely deformed he is can never be made consistent. Sometimes he is a squat spherical creature with a two foot nose and sharp piranha teeth, and sometimes he just looks like a perfectly ordinary mildly chubby man in a suit.
The Joker ain't far behind. Originally, he was a relatively normal-looking man, with his skin and hair color (white and green, respectively) being the only things to make him stand out. Since then, artists such as Jim Aparo and Neal Adams have portrayed him as being extremely tall and thin, with a Thin Chin of Sin (probably to contrast with Batman's Lantern Jaw of Justice). People such as Marshall Rogers, on the other hand, portray him with a more squarish chin; Rogers also believed the character was physically incapable of not smiling. And let's not even get into Jim Lee's... highly controversial design.
The Joker sometimes is drawn as though he were wearing makeup as well, even though his appearance is canonically the result of a chemical accident. In Batman: The Dark Knight Returns he permanently has the pale skin and green hair, but he enhances his lips with lipstick that is somehow poisonous to everyone else but not him. Oh, and does he give it a workout.
Mr. Zsasz is sometimes lean and muscular and has a buzz cut hair style like Henry Rollins with crazy eyes, and other times he's scrawny and looks like a balding, emaciated, meth addict with vacant eyes. Artist Cliff Chiang also gives him a standard skinhead appearance for some reason, with a white tank top, suspenders, Doc Martens boots and a shaved head (though the last of these is hardly unusual for Zsasz).
Nobody can decide whether Killer Croc is a big strong guy with a skin condition or a crocodile man anymore. It's 50/50 that he'll be depicted either way.
Despite the company using the same designs for characters. Killer Croc looks different than to how he was drawn in Batman #1 just a few months before he appeared in Red Hood and the Outlaws. The design for Mr Freeze by the book's artist also appears different from how he looks on the Batman Annual cover, though the version that appeared in RHatO seems to have been adopted as the official one now.
Similarly, Marvel's Tiger Shark keeps alternating between costumed guy with shark powers and more shark than man because people don't care enough to keep track of what he's supposed to look like. Frankly, it's amazing that people ever remembered something like the Beast becoming a blue gorilla; You can be sure that if something like that happened now, it would never last.
In some cases, where the character's powers are the result of deliberate alterations to their body (Tiger Shark's powers were caused by experimentation, Killer Croc started as a "natural" genetic mutation but was later artificially enhanced), cases have been made that the character's biology is in flux, with their natural/original genetics and the altered state each struggling for dominance. In Tiger Shark's case, after his powers were enhanced to the point of appearing to be a man/shark hybrid, there actually was a distinct progression in later published appearances where his human features seemed to be slowly re-asserting themselves.
Bane's mask varies between luchadore and S&M. Also, does it only have eyeholes or have an opening for his mouth and/or nose? If it has an opening, is it zippered?
Poison Ivy's skin tone ranges from standard Caucasian, to slightly olive, to bright green, to white as snow depending on who's designing her each time. For some reason Jim Lee draws her without toes, making her look rather like a green painted Barbie doll. Ivy's degree of stripperificness varies a LOT; one issue it's the traditional green leotard, the next it's a bikini made of leaves, the next it's nothing but a few vines covering her naughty bits...
Similarly, you're lucky if Two-Face's skin color and hair on his damaged side are consistent throughout a single arc. Even on his undamaged side, he can look like a completely different person. The color of each side of his suit is also rarely the same.
The Riddler started in a wacky green body-suit, until the actor playing him in the old Adam West series decided he hated it and made his own costume, which came to be the standard depiction: a nice suit with a bowler hat and a question-mark on the tie. That's more-or-less his DCAU depiction to this day, (except in Knight Time) although he often looks a lot like Art Carney. But back in the comics, compare the Riddler in The Long Halloween — a lanky old guy in a loose suit — to the Joker miniseries by the guy who did "100 Bullets": the Riddler looks like a young, club-footed pimp with Elton John glasses. In The New Batman Adventures, on the other hand, he wears the body-suit again, but in a lighter color and with only one large question mark, rather than many small ones.
Scarecrow. Dare to compare the versions where his head/mask is just as thin as the rest of him with the versions where his head/mask is oddly bulbous and probably the roundest part of his body. And then there's the debate about whether or not his mask is even supposed to have any eye and/or mouth-holes... and the oddly popular "noose necktie". And that's just when he's in the mask. When it's off, these questions arise — is Crane's hair blond, brown or red? Also, is he simply an average-looking guy or "dear God keep the mask on Scarecrow"? And exactly how old is he? (The last probably overlaps with other factors.)
Additionally, Ra's Al-Ghul is usually an Arab, but sometimes appears more European. Officially, he's supposed to be of indeterminate ethincity, but not many artists can pull that off.
The Mad Hatter has it as bad as Killer Croc. Artists have drawn him from average looking to John Tenniel's illustrations. He has had brown, blonde, white, black, and red hair. His height is highly variable as much as The Penguin's. But artists of today have been drawing Tetch with an overbite and red hair, but his height still ranges from Wolverine short to dwarf.
The, eh, black mask of the Batman villain Black Mask either looks like a frowning gargoyle or a skull. This is particularly interesting in Catwoman 13 where he appears as the Gargoyle variant at the end of that issue, but in the next is skull faced without explanation. But everything varies; are his eyes fully visible, or just white spaces in the mask; is it permanently set, or can it make a surprisingly varied number of expressions?
Bizarro: Is his skin crystal-like, or just gray? Or white? Is his costume the same colors as Superman's, or does it have a slightly skewed color scheme?
While the amount of cleavage shown in a superheroine's costume is always a variable, one character that tends to get hit very hard with it is Donna Troy whose cleavage varies from modest to absolute from artist to artist.
Etrigan's height, facial features, and outfit vary wildly. Most artists draw him medium height with a mostly humanoid face and a Primal Stance, but when he guides Dream through Hell in The Sandman he barely reaches Dream's shoulder and has an elongated reptilian snout, and in Swamp Thing he has a harelip. Then there's the endless variations in which way his horns point, what his bracelets and belt look like, and how much leg he's showing. In a subtler example, nobody can decide whether Jason Blood's Skunk Stripe is on the right or left side of his head.
The lightning bolt earpieces on the side of the Flash's head are more or less prominent depending on who's drawing him. They're either thunderbolts (usually Wally, almost always Bart), Hermes wings (usually Barry, always Jay, as he wears a helmet) or T-shaped earpieces (seems to be a Scott Kolins quirk).
Speaking of the Flash, how Bart Allen's hair is drawn also fluctuates wildly. As Impulse, it's generally big and bushy; as Kid Flash, his hair is shorter. Sometimes it's depicted as brown, sometimes it's red. Bart was also slightly taller and a bit more muscular when he first appeared in the Flash title, and his hair was loose and shoulder-length. Later artists depicted him younger and with shorter hair, until it evolved into that large bushy style. His body also became more gangly, and Humberto Ramos popularized the "huge hands, huge feet" look which stuck with the character up until other artists drew him less stylized as Kid Flash. Bart's eyes were also usually yellow, but later colorists would slip up and give him brown, or even green (like Wally West).
Wally West's hair colour is either full-on red, orange, strawberry blonde, or just outright blonde (like Barry Allen) depending on who's drawing him. Similarly, his eyes are canonically green, and are depicted as much usually, but he's also frequently drawn with blue eyes, again just like Barry. His costume varies as well. The one consistent thing (once he changed it), is that his belt is pointed downwards towards his crotch, rather than the completely horizontal lightning belt that Barry Allen used. Sometimes the eyes are whited out, sometimes they aren't. Sometimes his costume is a darker red than Barry Allen's, sometimes it's just as bright. Sometimes there's a yellow circle around his symbol, sometimes there's not. There's kind of an in-universe reason for this, in that Wally eventually learned to materialise the costume around himself and alter its look, but at times, that can't apply and the artists just choose whichever look they prefer.
Another notorious entry for Ambiguously Brown; Green Arrow II, Connor Hawke. He's supposed to be 1/2 white, 1/4 African-American and 1/4 Korean. Good luck finding an artist who can draw it.
Green Lantern: The Human Lanterns' eye colours. Are they green because of the rings, naturally green, or not green at all?
For Hawk and Dove, Hank Hall/Hawk's build has varied from being simply brawny to full-on Liefeldian beefiness (it doesn't help that the '80s mini-series was drawn by Liefeld to start with).
Artists also waver between showing Hawk and Dove's eyes through their costumes or doing a full-on Batman effect with whiting out their eyes.
Dawn Granger/Dove II started out as an average-height girl who would magically grow to become taller as Dove, while her shorter blonde hair would change to become long and white. In recent years, artists often forget this and portray her height as being the same in both forms and her hair winds up often being colored white in civilian mode too.
Holly Granger/Hawk II: A shorter woman with an average-sized chest or a practical Amazon with large breasts? Was her hair super short, shoulder-length, or was it down past her waist? Her hair color was another variable: Originally Geoff Johns and Mike McKone considered her as a blonde, but changed their minds and had her with pinkish-red hair in her debut (though the colorist forgot to recolor her hair in one panel, leaving her as a blonde). Johns' official profile for her in a Secret Files issue then stated that she had brown hair, yet his draft for the first One Year Later Teen Titans issue described her as a redhead. In her sporadic appearances during her tenure as Hawk, colorists seemed to shift between all three of those colors for her hair, sometimes even in the same event (World War III).
The extent of Jonah Hex's scarring varies greatly between artists. He's always got the mouth-string, bug-eye and perma-sneer, but some artists draw him with only those, most artists add some burn scars (The Movie seems to have gone this route) and some artists take it Up to Eleven and turn him into Two-Face in a cowboy hat.
Justice Society of America features a couple. Cyclone's costume is pretty hard to draw, so various artists raise or lower the slit on the side (or remove it entirely), alter the amount of strips on the leggings, change the size or colour of her emblem, and change how baggy or large the overhanging pouch is.
Lex Luthor: While everyone manages to get the "bald" aspect down, the guy's body structure ranges from emaciated to Kingpin-esque levels of girth. And on rare occasions, he's almost as jacked as Superman!
Fun fact: in his first couple of appearances, he was indeed depicted with a full head of red hair. So not even the bald aspect is safe!
This sudden shift was parodied in Supreme by Original Dax, the first incarnation of Lex Luthor Captain Ersatz Darius Dax to be revised and sent to the Daxia. He remarks with bewilderment that as more Daxes showed up, he notices all of them have hair and no beard, unlike him; he theorizes that some kind of higher power just decided it was better that way.
Pre-Crisis, there was no mystery to it. Dude got himself in shape. Granted that continuity-loving writer E. Nelson Bridwell was probably the only one to bother lampshading it, but he did. Then the Crisis came, and John Byrne made him fat again. Eventually, Grant Morrison's reboot had a chunky Lex at the beginning of Supes's career, before Luthor is driven to a physical perfection regime by his inferiority complex.
During The Death of Superman, Jon Bogdanove drew Lex Luthor Jr. with an enormous perm, while his hair style was more subdued under the other artists.
Cosmic Boy from the Legion of Super-Heroes has an incredibly inconsistant eye color, with his eyes having been colored blue, black, grey or purple by different artists.
In The Lightning Saga, a Justice League and Justice Society crossover, the third Wildcat suffered heavily from this trope. When drawn by the JSA artist his musculature was defined but lean, especially when compared to the body of the first Wildcat (his father and a heavyweight boxing champion). But whenever the JLA artist drew him he would suddenly have huge muscles that easily rivaled or even surpassed his father's. This actually becomes kind of funny when reading the trade paperback, since the artists alternated on chapters and make it look like Wildcat II is constantly expanding and contracting.
Lobo, at least before Simon Bisley's despiction of him, had his hair and black facial marks (specially those on the side of his mouth and chin) vary a lot.
Everyone is agreed that the Martian Manhunter has red eyes, but their appearance varies depending on the artist. Most of the time they are pure red, with no iris, pupil or 'whites'. Sometimes they have these structures, but colored in subtly different shades of red. Very rarely they will look like human eyes, but with red irises. This variation can be explained by the fact that J'onn is a shapeshifter, which lets the artist off the hook.
Go back before the 2000s, however, and there're comics where J'onn's eyes are solid black. At some point, the red eyes won out decisively, and the black eyes haven't been seen since.
Power Girl shares She-Hulk's "varying musculature" issues; Alex Ross drew her as fairly muscular (but still curvy) in Kingdom Come, and it seems that's been either downplayed or exaggerated (I'm looking at YOU, Jimenez!) by most every artist since then. Her famous boobs also vary a bit; she's always at least a DD, but some artists go bigger. This can be applied to most any superheroine, though.
PG in the white and gold outfit of the early 1990s was slim, athletic and of average height, sometimes. Recall Wally Wood originally drew her short (about 5'), zaftig and narrow-waisted.
Another big variant is the size and shape of her boob window, which comes in a variety of sizes and is either round, square or shield-shaped.
The original penciller for The Sandman, Sam Kieth, depicted Justice League villain Doctor Destiny as completely bald and with horribly rotting, seemingly dripping skin. When Mike Dringenberg took over pencilling duties, Doctor Destiny acquired side hair and lost the rotting skin.
Sometimes all the characters are drawn in a unified style, sometimes Billy/Cap are drawn in homage to C.C. Beck's original cartoony Black Bead Eyes style and the others in a more realistic one.
Freddy Freeman, apart from his New 52 Adaptation Dye-Job that took away his young-Elvis look, has used a variety of mobility aids and had several Limited Wardrobe redesigns more radical than Billy's, some more self-consciously rockabilly-inspired than others.
Black Adam was originally drawn with pointy ears for some reason. When he was introduced to the DCU in The Power of Shazam, he had normal ears. When that version of Adam appeared in Justice Society of America, he had pointy ears again. Since then it seems to be entirely down to whether the individual artist thinks it looks cool or silly.
Some artists will go out of their way to draw Shazam as an adult version of Billy.
Sinestro's skin; Purple? Reddish? Magenta? Pink? DOTA. And to a lesser extent, whether or not his ears are pointed.
Not just his ears either, but also the shape of his head. Some artists (and animators) give him a normal "human"-shaped cranium, others endow him with an exceptionally tall forehead (like a less-extreme version of Hulk villain The Leader) that goes straight up, while others still depict more bulbous proportions, with a subtle outwards flare. His resulting hairstyle varies as well, from nondescript short hair, to a pronounced widow's peak, or even a flattop (in Emerald Dawn II). From the advent of forming his own Sinestro Corps he's been sporting a much shorter hairstyle with a shaved undercut befitting his "fascist" look (note the Naziesque armband), to which most artists have since adhered.
Curiously enough though, other Korugarians are almost never drawn with non-human ears or cranial shapes, including his direct blood relatives.
Although fellow Korogarian (and Sinestro's daughter) Soranik Natu usually stays a pretty steady shade of pinkish-purple. This is probably because she (a) hasn't been around nearly as long and (b) only really appears in the Green Lantern books.
Does Larfleeze look more like a pig, more like a horse, or even a Baphomet-like demon?
Does G'nort look like an anthropomorphic dog, or Barf from Spaceballs? Likewise, does Ch'p look like a realistic chipmunk or something out of a kid's cartoon?
Odds are you don't know that Superman traditionally has another S symbol on the back of his cape. This is because most artists (except in his own series — usually) either simply forget about that or honestly think it's unnecessary.
Similarly, the S-symbol on the front is either a small emblem on his chest or large enough to cover his entire torso.
It was especially bad the first 15 years of his existence when the artists could hardly agree on any details of his costume beyond the basic cape and tights with an S on the chest. The original chest emblem was a triangle with a simple bold 's' and his boots were laced up "sandals." You can even see some early merchandise where his tights are yellow instead of blue.
The New 52 version of Superman's suit was described as Kryptonian armor. Despite this, artists can't seem to agree if it's actually metallic or just cloth that looks (or acts?) like armor.
The biggest variable in modern depictions is his musculature which fluctuates from a lean runners' build up to Olympic bodybuilder. Really, most male heroes go through some of this.
While starting out as a simply green-skinned human for most of the series, later artists tried to emphasize the "beast" in Beast Boy's name. Mike McKone started by giving him pointed ears and fangs (as an homage to the animated Titans), while artists following him would depict Gar with huge sideburns, a wider jaw, claw-like fingers and toes, and often let him go barefoot. Some artists also liked depicting him with copious body hair, while others left the detail out.
As originally drawn by George Perez, Raven's face was rounder and softer-featured. As he continued to draw her, he decided to make her appearance stand out from the other two women on the team. She wound up developing a more narrow face with visible cheekbones, larger lips, and a rather high forehead. These changes were later noticed in "The Terror of Trigon" arc. After Perez left the series, Eduardo Barretto gave Raven a look more akin to Perez's original style, though later artists would give her back her narrow features.
After her resurrection in TT volume 3, she appeared as a younger teenage girl, though fans of her classic appearance decried some artists' choice in giving her larger breasts as a way of making her sexier. The "new" Raven also seemed to alternate between looking in her mid-late teens to looking a little closer to her '20s.
The second version of "Evil Raven" in the '90s also had her appearance shift about a lot. Did she have antlers like her father? Was her skin red or simply a deep tan? Did she have four eyes or two? A gray streak in her hair or not? The extent of just how revealing her clothes were was yet another of these many variables.
Raven's first dress and cloak were later mentioned in dialogue to be "black", after she made the switch to her white outfit. Yet in actuality, the dress and cloak were depicted as blue, possibly to save on black ink and as a stylization choice. Most modern depictions of Raven keep the outfit blue, although in a darker shade (though a pin-up for the volume 3 "Secret Files" depicted her dress as a violet-highlighted black).
Starfire's hair started out infamously huge and red, while her eye shape was more on the rounded side. Certain artists past volume 3 would sometimes give her narrow eyes and portray her hair much straighter, and colorists would occasionally give it more of an orange or brown hue. Her flaming hair-trail changed from looking more like an extension of her own hair, to actual bursts of fire. Her skin has appeared either more on the golden side, or more saturated of an orange tone.
Rose Wilson's eyes have shifted between being green and blue, depending on the colorist (back when she had both eyes). She's also supposed to be part-Cambodian (at least in pre-Flashpoint continuity), but she's often drawn a bit too Caucasian-featured for some of her fans' comfort.
Miss Martian alternated between being a smaller-built girl with average bust size, and at times having a much larger chest. Colorists also couldn't decide whether her eyes were green or magenta, and the style of her boots and gloves were subject to change.
The '90s Titan Pantha had her unmasked face subject to much variation. Some artists preferred giving her a more animalistic look, with a snubbed, snout-like nose and pointed earlobes. Other later interpretations showed her with a more human face, with her simply having irises like a cat. The color of her sclerae and irises were also never consistent.
Artemis Crock's (Tigress') hair changes shades often. It has been various shades of blonde and even light brown.
Vixen from the Justice League has an odd one in how her powers are presented; she has the ability to take on the abilities of any animal, but DOTA, there may or may not be an aura looking like said animal around her when she does it.
Her costume's Stripperificness depends on who's drawing her today, particularly her shorts. This doesn't only apply to formal costume changes — it also happens in comics supposedly taking place at about the same time.
Her nemesis Cheetah also varies on whether she actually has fur or just a cheetah pattern on her skin. Also in just how bestial she looks; she may be a sexy catgirl, a snarling, spitting were-beast or somewhere in between.
Her friend Etta Candy started out as significantly overweight yet tall in her debut, and had blonde hair. Her height soon shrunk through her Golden Age appearances, to where she usually was seen as short and fat, and with red hair. In the Holliday Girls' brief return in the '60s, her weight was somewhat reduced and her uniform was changed to have a modest skirt instead of short shorts. Later portrayals of Etta (pre-New 52) depicted her as a taller woman, either actually a bit overweight or simply Hollywood Pudgy (and either confident or insecure over her looks in comparison to her idol's). After Flashpoint, she's since undergone a Race Lift and become much more slender.
Her Post-Crisis hair color had alternated between being brown, red or blonde, along with the varying depictions of her weight and her eye color (which could be either blue, green or brown). In George Perez's run, her weight changes were an addressed plot point, while depictions afterward were up to the artists. The artists during Gail Simone's run tended to favor a tall, curvy, blonde-haired Etta, while the Etta in the Flashpoint tie-in issues was red-haired and pudgy.
One notable inconsistency was Grant Morrison depicting Etta as a morbidly obese, middle-aged woman with graying hair in his "Seven Soldiers" series, while the Wonder Woman title had depicted her less heavy and with red hair.
Her nose is inconsistent. Young Justice, the Wonder Woman movie, and more than a few comic book artists give her a large, 'Greek' nose while others favor a smaller nose.
Does Wonder Woman have straight hair or wavy hair? If the latter, just how wavy is her hair?
Is Black Canary a natural blonde or not? Traditionally she's naturally black haired but either wears a wig (pre-1990s) or dyes/bleaches her hair (post-1990s), but some artists have depicted her as always being a blonde.
Krypto the Superdog is a large, white dog. This is the only constant between his designs. He's usually drawn as a vaguely Labrador-looking dog with floppy ears, but even that's not consistent.
Smasher, in Jonathan Hickman's Avengers run. When initially drawn by Adam Kubert, she was depicted as pretty tanned, as would be expected from someone who grew up on a farm in Iowa. She also had very dark brown hair. However, Leinil Francis Yu drew her as having very pale skin and very light brown hair. Then Nick Bradshaw draws her with black hair. Then, Stefano Caselli draws her with very brown hair that's seemingly black, except in the right light, and brown eyes. This was all across a run by the same writer, who created her. You'd think he would've stepped in at some point.
There's an odd case regarding Maria Hill. While it's all over the place usually, with the one consistent thing being that it's short.
Captain America's Marvel NOW redesign has been laughably inconsistent. It was introduced in The Avengers, but looks quite different in Uncanny Avengers and Cap's own solo book. Some artists add in the old head wings (which were not present in the initial redesign), change the boot shapes, and make various other alterations to it.
His foe Black Racer is sometimes depicted as African-American (as her name would imply), and other times she's a white woman.
The new Captain Marvel's hairstyle varies between series, said series being Avengers, Avengers Assemble, All-New X-Men, and her self-titled series, and ranges from her new mohawk with long hair, to a short boyish mohawk, and to just her previous long locks as Ms. Marvel.
Carnage's host Cletus Kasady's appearance varies throughout the series; originally he was depicted looking like the Joker with a normal skin tone and curly red hair, other times he has wild wavy hair, and some of his more recent appearances depict him looking like a redneck with a receding hairline, and some artists depict him as a blonde rather than a redhead. It also varies whether he's scrawny or muscular.
The skin color and musculature of recurring Daredevil enemy Turk varies wildly. This necessitated the eventual Hand Wave that he has vitiligo and gets prescribed steroids to keep it in check.
Deadpool has been drawn with various skin colors— gray, brown, red, flesh— and with various skin textures— looking like gravel, like a burn victim, like a fairly normal person covered in tumors, like he's been sculpted out of pudding— and his ugliness is majorly played up on his date with Big Bertha for the sake of a gag. It's been handwaved that his cancer and healing factor fight it out, thus his appearance is always in flux.
Also Deadpool's pal Weasel, who might be broad, square-jawed and big-nosed in one book and scrawny, pointy-chinned and narrow-nosed in another. He also appears to have quite a collection of glasses.
Deadpool's daughter, Ellie, is another extreme example. Her appearance is drastically different every time she's shown. She's bi-racial, but sometimes will be drawn as more African American. Her mom, Carmelita was a Latina -which contains white, black, and mixed racial origins. Anyhow, Ellie undergoes a good few changes in look.◊ Her maternal grandmother, Ms. Camacho, also gets whitewashed◊. As we see, she's introduced as a brown-skinned Latina woman. But she didn't stay that way.
Nocturne of the Exiles is the alternate-reality daughter of Nightcrawler and the Scarlet Witch, and there's a surprising lack of agreement on how much of her father's physical quirks she inherited. Sometimes she has five fingers per hand, sometimes three. Sometimes she has normal feet, sometimes not. Artists can't even agree on whether or not she has a tail and really, at that point the editors should be stepping in (or at least giving them an official character model to work with). About the only thing they can agree on is that she's blue.
Nightcrawler himself suffers from a bit of this. Sometimes he has pupils, but usually his eyes are solid yellow; sometimes his eyes are always in shadow, other times his forehead is lit naturally; at least one artist for some reason decided his hair should stick up like Count Chocula's. The most frequent point of dissention is his feet: they always have two oversized toes in front, and should have a third in back to let his feet grasp like a bird's talon but many artists draw him with normal heels, and some have shown him wearing normal shoes when going in public in a Conspicuous Trenchcoat, which should be impossible.
They actually decided that Nocturne's tail was actually retractable, complete with one of her teammates commenting on how freaky that was after watching her retract it.
He was also orange instead of green once, but that was really the Midgard Serpent in disguise.
Of all the Marvel characters, the Hulk has probably the greatest variety of appearances. He started out looking like an 8-foot beefed up version of Frankenstein's monster (probably not accidentally, as Universal's Frankenstein film was one of the inspirations for the character), but now varies tremendously from artist to artist: facial features resembling anything from a human brute through to a full-on caveman, how muscular he is, how big he is, his hairstyle, the amount of veins visible,the length of his limbs in relation to each other, the length and color of his shredded pants, etc. And that's just the Savage (green) Hulk, never mind his other personas...
What's more, the Hulk's appearance will vary with the same artist. Each artist will usually keep the face consistant, but his overall size and proportions will vary from panel to panel.
Other variables; Hulk's eyes. Green or red? Blood; green or red? His third wife Caiera and their son Skaar also have variable eye colors, from blue to green.
Of course, since the Peter David years, it's been established that the Hulk's appearance and personality are a direct reflection of Banner's subconscious mental state, so many of the artists' different approaches to him could probably be put down to Banner's frequently-shifting psychological troubles.
In the early Silver Age, the Hulk didn't even need different artists to get inconsistent. Jack Kirby was particularly variable on how many toes the Hulk had, drawing him with three, four, or five toes per foot virtually at random. Contemporary artists use this as a Shout-Out opportunity, and flashbacks to the early Silver Age (like Hulk's brief tenure on the Avengers) often show him with three toes.
Iron Man's situation is complicated in that all his different armors tend to look sort of alike, and the devil is in the details. It wasn't always like this, though, back in the days of the classic red-and-gold suit (Models 2-4 inclusive), where changes to the armor clearly happened within the story, and due to relatively long-running creative teams and limited appearances outside his own book and The Avengers, continuity wasn't much of an issue. Even the Silver Centurion (Model 8) armor, despite being a radical departure for its time, was fairly consistently portrayed, with the biggest difference being artists other than the team of Mark Bright and Bob Layton, who introduced the Model 8, adding extra panel lines to the shoulder armor.
Then came the Neo-Classic (Model 9) armor at the end of the Armor Wars. The original Mark Bright-Bob Layton design was changed slightly when Jackson Guice took over on pencils, and this version with flared shoulders became the default style for most other artists. But then Layton took over on pencils for Guice, and moved back toward the original rounded shoulder caps. Then John Byrne made his own tweaks over on Avengers West Coast, and finally, there's the John Romita, Jr. "moon boot" version, which incorporated elements from both Layton's and Byrne's versions. Paul Ryan did depict the Guice-Layton version alongside the JRJR version in Iron Man issue #268, with the older version being stored alongside the older models in the Hall of Armors, but this is quite possibly the only time those two design variations have ever been explicitly shown as separate armors.
A painful example is the 'Extremis'-armor: it does look different from the one immediately preceding it, and it is pretty important to remember this, because the in-story differences are pretty radical. And yet, many artists just kept drawing him with the Model XXIX while he had switched to the Model XXX long since! And this is not even taking unto account the many, many instances where artists just drew whatever they felt.
This is still alive and well in the 21st century. Artist David Marquez created an amazing suit of fractal armor for Invincible Iron Man (2015) that has the ability to morph into any of his previous suits; this has never been shown consistently by any of the other artists portraying it.
Iron Man's enemy Madame Masque has a golden mask that is inconsistently handled by artists. Some artists depict it as having sculpted features, while others portray it as tight and malleable enough to show Masque's facial features and allow her to eat.
Jarvis, the Avengers' butler, is always depicted as a tall lean man. Except when drawn by John Byrne, in which case he will be short and pudgy.
Loki seems to have a new look every time he shows up. The basics stay the same, but lots of other things change. Not surprising, considering the main thing that Loki is known for is illusions and shape-shifting:
He always has a head piece with horns. Whether it's a helmet or a headband, or how curved/long the horns are is DOTA.
The only really consistent thing is that his eyes are almost always a bright green. Everything else is up for debate.
And with Kid!Loki the artists couldn't seem to decide on his physical age. His main book (Journey Into Mystery) drew him around 10 years old, the other Thor book put him closer to 12, and the Fear Itself tie-ins where he featured had him look more like a young teenager.
One memorable cover with him, Hercules, and Juggernaut had him look 16-17 and fairly ripped.
Not as much since the movie's out now, but some more casual readers used to think Loki was blond, since his traditional costume (until he took Sif's body in 2005) had a blond ponytail hanging off his helmet... even when it wasn't a helmet but a cloth head-covering (it was however just an ornamental attachment). In his last adult-male drawings, the blond hair was changed to gold ribbons, presumably to avoid this. He was just so rarely seen without something covering his hair that some people didn't even know (much like the symbol on the back of Superman's cape). One rare time when he had his helmet off in a crossover with the X-Men, his hair was black.
The Punisher's skull symbol is always different between artists. His clothing also varies from being a full body costume to just being a shirt with a skull on it. Another thing that varies is if his outfit is all black, or if he has white gloves and boots as he did when he was first introduced.
Runaways has this. The more recent comics have a very different looking Chase, for instance, due to a change in artist.
Runaways in general features some running variables:
Southpaw's supertech gauntlet is incredibly large (with any given finger being wider than her head) with one artist and looks like a relatively normal glove with another.
As mentioned in the Progressively Prettier article, She-Hulk herself varies in appearance from merely lean and athletic to being almost as musclebound as her cousin.
In fact, this strikes a lot of that series' supporting cast. Particularly, Stu Cicero goes from chubby to scrawny depending on which artist is drawing him (and the series regularly, sometimes several times in one issue, switched between two artists for effect, making this especially noticeable.) Similarly, Anthony Pugliese is bulky, brawny, and broad-shouldered with one artist and almost entirely generic with the other.
Lyra - the daughter of the Hulk and Thundra from a possible future - was drawn (and written) as very clearly an adult (She-Hulk with red hair) when she appeared in her own limited series. When she joined Jennifer Walters for the She-Hulks series, she inexplicably became noticeably younger and entered high school in her human form (the age shift was more a writer decision than an artist one, but there's no reason she couldn't have changed between a high-school aged human and the adult-looking She-Hulk appearance she'd previously had). The fact that this made her limited series - in which she'd come to the present to get pregnant with Norman Osborn's DNA - ridiculously creepy was entirely ignored.
The eyes on Spider-Man's mask change sizes quite frequently, even allowing for expressiveness. As do the sizes of the web nets under his arms, ranging from connecting elbow and waist to nonexistent. The spider emblem on his chest has gradually become less and less goofy. In some cases, some artist even drew the suit as red and black instead of red and blue. And don't even get started on what colour shading the symbiote suit is supposed to have...
Ditko's early work suggests that Spidey's costume was originally red and black; black was often shown with blue highlights back in the four-color days. As the series progressed, the "highlights" slowly became the base color; John Romita's advent on the book entrenched that as canon.
Spider-Man's appearance in his red and blue costume was standard for years, based on the John Romita Sr. version. Then when Todd McFarlane became the artist in the late Eighties he made the eyes bigger, brought back the black base color and made the weblines look like spaghetti. Even after McFarlane left this remained the look for most of the Nineties.
There's also the question of whether or not Spidey has weblike membranes under his arms. He did in his first appearances, and almost never does anymore. In between, it varied depending on whether or not a given artist remembered - or was aware in the first place - that they were supposed to be there. It has been known to appear and disappear from one issue to the next even if it's part of the same story; within the world of the story they were there five second ago but are now gone even as he continues to chase Doc Ock with no time having passed. (Also, when it's there, it can go from being quite small to connecting his wrist to his waist.
Spider-Man's Carlie Cooper falls victim to this a lot, to the point where fans aren't even sure what she's supposed to look like beyond "White and has glasses". Most notably is ever changing hair style and color which have NEVER been consistent between two issues. It ranges from pixie cut and light brown to past the shoulders and red-ish to just above the shoulders and more of a blondish to anything else. A lesser example is that intially colorist couldn't figure out how dark Lilly Hollister was supposed to be.
Like the Hulk, Thanos' size and proportions tend to vary wildly depending on who is drawing him.
Storm is quite infamous for this in regards to both her general appearance and costume. When the X-Men returned to wearing super-hero uniforms, Storm went back to wearing her "the Twelve" outfit. However, practically every single artist who drew her interpreted her outfit differently; changing the color scheme from black/gold to black/white on a whim, giving her boots and making her costume stop at the thighs, etc.
Storm herself varies from being "somewhat Asian" to "heavily African". Her own physical appearance also varies, and this happens with a lot of black and non-white superheroes. Her skin tone varies greatly, as do her facial features.
Her white streak started as a pair of streaks on her temples, moved to the center of her head, and then to just her bangs. They can't make up their mind whether it's natural or bleached in, either. (In The Movie, it was a result of dealing with Magneto's machine).
Early on (Avengers annual 10, her Dazzler issues), Rogue was often drawn as middle-aged, with graying hair at the temples and visible crow's feet around her eyes.
Similar to Spidey, it was hard to know if black or blue was the intended appearance of the day-one outfits. Later comics alternate. There's also at least once instance of "blue for full-fledged X-Men, black for rookies" when the day-one look was being used as training uniforms while all characters had their own costumes out in the field.
He's a Holocaust survivor, making him old by default, but an early incident where he was de-aged and re-aged has left his true appearance and visible age as a matter of debate. He boasted that the process returned him to his prime, but did re-aging him return him to his 70+ age or did bring back to being a young man in his thirties? Different artists will depict him as either a well-built old man with gray hair, a frail old man with gray hair, or a young, well-built man with gray hair. Considering he has naturally very pale hair only confuses the issue further. Though the hair color also varies between stories, from light blond to gray to pure white to a plain, very unremarkable brown.
He arguably owes his current status quo to this phenomenon. For his first handful of appearances, he turned into a snowman, but very early on (X-Men #8) he became able to turn into ice. And, indeed, the very first time Jack Kirby drew him as ice, he was obviously solid, transparent ice — Angel even compares his powers to the Invisible Girl. Somewhere down the road, it was decided that he just coated himself in ice during combat. His inclusion on Spider-Man and His Amazing Friends led to a generation of kids that knew what he looked like but didn't really know anything else about him and it became the common idea that he actually turned into ice (which is the most logical way to interpret his powers going on appearance alone). Eventually you started getting artists once again drawing him as transparent when in "iced up" form. Eventually turning into ice was made officially part of his power spread. Now, not only does he turn completely into ice, but no two artists can agree whether he looks the same as he used to, or like a normal person made of ice, or like some spiky-headed mosntrosity.
Of course, when you can convert your body to a substance that you can manipulate at will, who says you have to maintain a constant shape in your transformed state? The Age of Apocalypse version of Iceman (which is where the "ice body" concept first appeared) embodied this idea. As flighty as the mainstream Iceman is often depicted, it's a testament to his ability to concentrate (or, possibly, his subconscious desire to fit in) that his shape is not in as constant flux as the AoA version.
His claws. Are they like knives, in that they have an edge? Are they basically needles? Are they curved slightly, completely straight or so curved they might as well be hooks? Do they come out behind or between his knuckles?
His height. Canonically and originally, he was a pretty short dude. But then he eventually got taller and taller, and once Hugh Jackman became mainstream media's perception of him, it got much more common to make him tall, yet characters still referenced his short stature.
How scruffy he is. Is he just a little disheveled with slightly bushy eyebrows? Or is he a full-blown caveman?
Are the brow points on his cowl short and spiky or long and blade-like?
She is usually small-busted, but damnit if Frank Cho can't draw women as anything but hypervoluptous, hourglass-shaped glamour models.
While Alan Davis, whose depictions of Kitty in Excalibur are considered a definitive version, managed to strike a nice balance in drawing her in realistic proportions for a developing teenager (14-15 at that point), while depicting her older teammates Phoenix and Meggan as more curvy and voluptuous. Lampshaded very early in the original Excalibur run, when Kitty tried to masquerade as Phoenix in the latter's very skintight costume.
There's also her age. It's not so bad these days, and it wasn't so bad right after her introduction, but for the middle years? Sometimes she looked 12, sometimes she looked 20, sometimes she looked shorter than Rachel and Meggan but still 20 and the writers clearly thought she was being made to actually look younger (leading to strange instances where what you've thought of as a grown woman for the past 10 issues reminds us she can't drive.)
He traditionally has eyes with black scleras and red irises and pupils, but other colors turn up all the time.
Also of the X-Men, has had wild variations in skin color, from extremely pale to olive complexioned to slight purple tint. Her hair has seen similar difficulties; Pink? Red? Light brown? Purple?
Marrow's physical deformities are depicted entirely differently from artist to artist also - does she have bony ridges around her face or actual bones sticking out at odd angles from her forehead and shoulders, etc.? At least twice there's been an in-story explanation for this (her powers get altered) but at one point she was appearing in two different X-Men books that were supposedly taking place more-or-less simultaneously with appearances so different you could not have guessed it was the same character except through dialogue and process of elimination.
Much like Logan her height tends to vary. Sometimes she's roughly his height or taller, sometimes she's shorter. Her build is also inconsistent; at times she's depicted as very svelte and petite, others more muscular or athletic (though never to Amazonian Beauty levels). Her bust size varies almost as much as her overall build, with the artist for "Mercury Falling" in particular giving her quite an impressive rack.
Some artists draw her to resemble the teenager she's supposed to be, but others make her look much older, into her 20s. This has practically become canon since she assumed the Wolverine title in 2015, with both art and scripts treating her as though she's at least in her early 20s. That means she's out-aged multiple mutant peer groups, and the pragmatic definition for her age currently (ca 2018) is "as old as possible without turning her dating Angel into a statutory cradle-robbing situation."
Although canonically green, in her first appearance in NYX, and initially in New X-Men, her eyes were brown. Throughout the first volume of All-New X-Men they were blue like Logan's. Canonically and in most of her appearances they're green.
"Cat Beast" (that is, the version of Beast from X-Men that is cat-like) has a tendency to look like a different animal depending on who draws him. He's been a grizzly bear, a baboon, a lion, and sometimes looks closer to the older version, "Ape Beast". Grant Morrison unlocked this Pandora's box when he introduced the lion look as Beast's "secondary mutation," and he's been morphologically unstable ever since.
Abyss's appearance has widely varied within the same story arc. Made of wispy thread things vs. Nightcrawler-like furriness.
Astonishing X-Men member Hisako Ichiki (a.k.a. Armor) has the ability to generate Psionic Body Armor, the shape of which differs from artist to artist. Where John Cassaday would draw it as shaped like Samurai armor, other artists range between that and ginormous bubble suits, and this isn't even going into the color of it.
Hisako also suffers from this regarding how old she looks. Cassaday originally drew her looking like she's in her mid teens, but later artists make her look anywhere from a 9 to a 19 year old.
The member Sofia Mantega (Wind Dancer) is Venezuelan but she's drawn in a variety of ways, ranging from fairly dark skinned with South American features to Ambiguously Brown to very Caucasian-looking with blonde hair. Most commonly she appears somewhere in between.
Sunspot is of Afro-Brazilian descent (though his mother is white, his first appearance has a fellow Brazilian bullying him due to his African heritage) but a lot of artists seem to forget this and simply make him look like the stereotypical American depiction of a "Hispanic" person. His skin tone varies wildly, as do his facial features and hair texture.
Hepzibah, a member of the Starjammers from the X-Men setting, was an anthropmorphic skunk complete with pheromone powers, then someone apparently thought she'd look nicer as, or had a thing for, white furred elves with tails, leaving a character that's has "In Name Only" in common with the original. It doesn't even have the same quirky speech pattern!
Monet St. Croix is another big example that doubles with the But Not Too Black trope. The thing that keeps it from being strictly the latter is that she constantly goes back & forth. The official Marvel site did an article celebrating its black heroes, and Monet is included in examples. Her father is Afro-French◊ and her mother was Algerian. But the artists & colorists can't seem to stay consistent with her race or complexion. Sometimes she looks black, ranging from caramel to dark chocolate in complexion. Other times, like her stint in X-Factor, she looks unambiguously like a white woman.
PAD said he got complaints from fans reading X-Factor, wondering why Monet was white all of a sudden. In response to that, they tried to gradually make her darker again. But even with that, she was still very light, with Word of God saying they still got complaints.
Hope Summers also constantly changes her look. Does she look like a little girl that has barely reached age 12? Or like a teenager? Sometimes she even looks like a red-haired Emma Frost. This stood out the most in Avengers vs. X-Men, where it changed nearly every damn issue.
In the Golden Age, Namor the Sub-Mariner's head was darned near triangular. Most modern artists just translate this into him having a pointed chin and a distinctive hairstyle, but it varies all over the place.
Jack Kirby himself changed his mind about Uatu the Watcher. When he first introduced Uatu, he was a classic My Brain Is Big (or at least My Head Is Big) alien with a skinny body, but Kirby later redesigned him as a chubby guy with a normal-sized bald head. Later artists seem to be able to freely choose which design they like better, but most lean toward the giant-headed version. Ditto for the rest of Uatu's race.
Similarly, when Kirby introduced the Skrulls, they were a race of skinny little short guys with bug eyes, but he later started drawing them as tall muscular types. As with Uatu, mentioned above, modern artists may choose either extreme or anywhere in between. Of course, as a race of shape-shifters, this is probably completely justified.
The Unbelievable Gwenpool: Gurihiru, the comic's most common artists, draw Gwen as a very petite teenage girl with an undeveloped, boyish figure. Other artists tend to make her noticeably curvier, though not usually to Most Common Superpower dimensions.
Werewolf by Night: While Jack Russell's werewolf form changed over the years, it was done consistently: first a typical Wolf Man à la Lon Chaney Jr., later more lupine (and with an added explanation to go with it). As of the late 2000s/early 2010s the depiction of his wolf self has become completely erratic: one artist draws him 'old style', the next very lupine, another somewhere between the two; sometimes he has a tail and sometimes he doesn't; sometimes his eyes are red, sometimes yellow. As a human, Jack has had every eye color and hair color imaginable. Officially he's a blue-eyed redhead, but works where he's depicted as such are rare.
From a same story-arc, between artists sharing every issue of it the 1996 Marvel vs. DC had at least three inconsistencies between Dan Jurgens' and Claudio Castellini's art:
1- Mjolnir's handle: Jurgens drew it tied to a leather strap; Castellini drew it tied to a chain.
2- Elektra's headgear is a kerchief to Jurgens, and just a red strip around her forehead, not covering hair in Castellini's art.
3- Lobo's hair - wavy to Jurgens, straight to Castellini.
In the Amalgam Comics, a Spin-Off of the Intercompany Crossover above: the number of fingers in the hands of Shatterstarfire (a merge of Marvel's Shatterstar and DC's Starfire). In X-Patrol, drawn by Roger Cruz, she had four fingers per hand, as Shatterstar; In The Exciting X-Patrol, penciled by Bryan Hitch, she had five fingers per hand, as Starfire (and most humans).
Just how much of a gonk is Big Ethel? She has gotten Progressively Prettier over time but that only added more variety to her designs. Sometimes she's a gangly girl wearing "unfashionable" clothes while sometimes she just has a different body type the others. Sometimes her supposed "ugliness" goes into Informed Flaw territory. Normal girl with overbite, barely human, and everything in between has been seen.
How attractive is Midge? She is often treated as very attractive but she tends to not be portrayed any differently than the background girls are, making this more of an Informed Attribute.
How big is Jughead's nose depends on the artist.
On default everyone has Black Bead Eyes but when they're depicted with eye colors it's rarely consistent. The main group of Archie, Betty, Jughead, and Veronica have all been depicted with either brown or blue eyes (though Betty is usually blue eyed). The Archie Comics (2015) reboot mixes things up by giving Archie green eyes, Betty blue eyes, and both Jughead and Ronnie brown eyes.
All the older characters in The Beano have outlived their original artists by some time, and succeeding artists have often made major changes to the character designs.
In the Beano and The Dandy favorites from the Forties there are two pages devoted to showing how Pansy Potter's appearance differed depending on the artist.
Subverted with Minnie the Minx in the 2000s. Long-serving artist Jim Petrie retired in 2001, and over the next few years a succession of artists all tried their hands at the strip, sometimes radically changing Minnie and/or her family. Then, when the editors finally settled on Ken Harrison as regular artist later in the decade, he undid not only the previous artists' changes but even those of Jim Petrie, taking Minnie all the way back to how her original artist Leo Baxendale had drawn her in the 1960s.
Kristian Donaldson's guest renditions of the main characters look very different and are more conventionally attractive, with smoother complexions, larger eyes and more angular features. Zee is also more Ambiguously Brown.
Kristian Donaldson does not draw Matty with his trademark nose bandage. After she filled in for Burchielli on issue 20, Burchielli apparently did homage to her choice by not drawing it on Matty's face for issue 21. In issue 22, however, it inexplicably returns.
The city of Duckburg tends to vary in size, from a quirky small town to a large city to (almost exclusively in stories by Marco Rota and the aforementioned Paperinik New Adventures, which is explicitly a different continuity) a bustling metropolis full of skyscrapers. Its most famous building, the Money Bin, varies in appearance too, sometimes having a dome on top, sometimes sitting on large hill.
Fables. Pinocchio suffers the most from this. It's most noticeable in The Dark Ages, between the first story in the collection, as opposed to when he appears later.
The many different artists who have worked on Grendel disagree most glaringly on the character design of The Wolf, Argent. Different stories have placed him just about everywhere on the spectrum from a Wolf Man to "very slightly humanised wolf who looks as if he has to make a great effort to stay bipedal".
Heroes: This is an odd use of the trope in a comic series based off of a live-action series. Claude's facial features tend to change depending on who's drawing the comic: when he first showed up in a storyline, he looked like Alan Rickman; the second time, he looked exactly like Christopher Eccleston, as he should; the third time, he and everyone else in the comic looked pretty generic.
In Carlos Ezquerra's original strips, Dredd had a rather sleeker, more police-like uniform; the modern, chunkier, big-booted look was created by Mike McMahon. Throughout the comic, his chin varies between prominent and ridiculous. In recent strips, as he's been getting older, his wrinkles have also been subject to artistic interpretation; while Colin MacNeil draws him with fairly smooth but weathered skin, Leigh Gallaher makes him look like a truly old man.
Since the Judges updated their iconic Lawgivers to the Mark II version, the depiction of that gun has gone through a strange amount of variance. General shifts in the gun's bulkiness is one thing, but some artists change what is arguably the gun's most recognizable feature, the half-circle ammo indicator, to a flat row of lights.
The Dark Judges have been portrayed as both bizarro zombie-judges with green skin and claws, as well as truly disgusting creatures who seem to be falling apart at the seems.
In Looney Tunescomics, Bugs' girlfriend Honey Bunny has been depicted as a rabbit with tan or yellow fur with varying body types, as a white and gray furred rabbit with a similar expression to Bugs, or as a near identical Distaff Counterpart of Bugs.
The Brazilian Mega Man comic Novas Aventuras de Mega Man suffered from this trope especially hard, as it had a different artist for each issue... and sometimes had multiple artists within one issue. Characters could be drawn Super-Deformed in one issue, and with human proportions in another. This was the least of the comic's problems.
Paperinik New Adventures has this Up to Eleven, since over twenty artists worked on it and no one did two issues in a row. Lyla is the most extreme case: she has been depicted from extremely sexy, especially drawn by Sciarrone, to slightly macrocephalic (in the first issue) or an Amazonian Beauty. Generally the Sciarrone's version is the most used (and the favorite among PK fans).
The color of The Phantom's bodysuit varies greatly depending on which country the comic is published. In some it's gray, or purplish-blue, or green, or red. That's right, the Ghost who Walks sneaks up on his foes in a bright red body stocking. Ninjas have nothing on his skill.
Her '50s comic was notorious for changing her appearance even in the same story. She would change from a blonde to brunette, and her face and chest changed from panel to panel.
While her Most Common Superpower has remained relativity consistent, the height that goes with it has changed radically. In her earlier comics she seemed fairly short - maybe 5'2 feet (0.61 m). In modern era even her WW2 version is about 6' feet tall and much more modelesque.
Ever since the 90s Salem from Sabrina the Teenage Witch has been a black cat; however whether he's completely black or two-tone, and exactly how the markings are, differ. Likewise Sabrina has gone through various hair lengths in the last 20 years but Archie has gone back to the original bob haircut.
The Sandman. This does make a bit of sense, considering it's stated early on that everybody who perceives the Endless see them a little differently. However, the way this attribute works is sometimes inconsistent. In the first volume, when he meets Nada in Hell, Dream still has his trademark chalk-white skin, only with African-style facial features. When they meet again in volume 4 he suddenly becomes black.
Depending on who's doing the penciling the characters will either have four or five fingers. Patrick Spaziante (who does most of the covers) tends to do five. It happened to the Overlander race with such frequency that, when Station Square made its appearance, they Hand Wave the mistakes by saying that they were descendants of humans.
How the Modern Era Sonic's quills were drawn, especially in the months after the reveal and the switch over. A lot of times, his quills were drawn exceptionally long and sometimes not long at all.
There's also how females that aren't Amy Rose and Rouge the Bat are drawn. Are they SEGA-isque? Are they more human-like? How much clothing do they wear? Sally and Bunnie are easily the worst offenders of the bunch, with Sally's proportions and fur varying and Bunnie becoming more like the "Sax Cymbal" she's depicted today, her robotic parts slimming out and her front being modified from just her body fur to an actual leotard.
Poor Elias Acorn was subjected to this. Ever since his first appearance in the comic his hair style would change constantly, and even his hair color would go from red to brown and back again.
In the Sonic Adventure adaptation what color is everyone's eye color? Sonic is portrayed as having green eyes and Amy with brown eyes but everyone else is up in the air. Does Tails have brown eyes or blue? Are Knuckles purple or blue? Johnny and Lewis, blue eyes or not?
Super Duck has been subjected to this, most obvious in his girlfriend Uwanna, whose depictions range from prime fetish fuel towering over Super Duck himself, to a loli the same size as him.
In the Star Wars comic crossover series Vector, main character Celeste Morne went from looking like this◊ in the first issue of the series, to looking like this◊ in the final issue.
The various Transformers comics constantly have characters switching between designs - be it the cartoon design, the model they were supposed to work from but tweaked, or art based on the toy but one artist using a different version. Sometimes, UK-written stories have slightly different color schemes from the US-written ones. The most egregiousrecent examples from IDW's series are The Transformers: All Hail Megatron (G1 designs vs. designs based on newer toys vs. the designs used in Simon Furman's books) and the movieverse version of Arcee (goes from looking like her unused Movie 1 design to looking like Transformers Energon Arcee and back, until Revenge of the Fallen gave us a new official design.)
The post-AHM Transformers comics are an even better example. In the ongoing series, Bumblebee had his E.J. Su design with Don Figeroa's current movie-inspired high detail style. But in the Bumblebee mini-series, running concurrently with the main book, Bumblebee is drawn with his G1 cartoon character model. Blurr is shown to have adopted an terrestrial vehicle mode in the ongoing series, but in a continuation of the very same scene at the beginning of issue 2 of the Bumblebee mini-series, he's shown with his Cybertronian vehicle mode! Artistic license is one thing, but swapping character models is going a little too far. It's gotten where each artist uses his preferred look for the characters, and to the Pit with what they looked like last issue.
And then you have Rumble and Frenzy, who can sudddenly swap colors in between (or even during) stories - see the FIRRIB page on TFWiki.net for more.
Once James Roberts and John Barber took over the G1 books, designs largely became consistent across artists, only changing when there was an in-story reason for it. Unfortunately, this led to a different problem becoming apparent; while the main artists like Alex Milne and Nick Roche had experience with drawing robots and created lavish designs with tons of unique flourishes, many of the fill-in artists like Livio Ramondelli or Agustin Padilla either dont have that experience or struggle to translate the designs into a more simplistic style. This led to more than a few oddities, like the short and stocky Swerve suddenly being the same size as the towering and gangly Whirl, or Cyclonus suddenly having a humanlike face instead of his trademark oni-mask look. Things got even worse when the fill-in artists made designs themselves, which often forced the main artists to totally rework said designs so they wouldnt stick out like sore thumbs. Take, for instance, Ramondellis strange, abstract design◊ for Zeta Prime and compare it to the reworked version◊ Alex Milne made for Zetas later appearances; the overall idea is the same, but the details vary so much that they could easily be mistaken for different characters.
In the X-Wing Series, Huff Darklighter is a large, clearly overweight older man, balding but with long straight hair, also argumentative and contrary, particularly with the Rebels. In Darklighter, Huff is a slim older man with a full head of curly hair, a neat beard, and a decidedly more Rebel-loving bent.
In the first set of The Thrawn Trilogy comics, the Noghri, alien commandos that can and have passed as Jawas or children, are depicted as hulking behemoths. The other comics promptly changed back to how they were described in the novel. And in that first set, Wedge had black hair. Everywhere else, it's brown.
In the same series, is Fel's build massive or slim? For that matter, what's his chosen formalwear, New Republic or Imperial with Rebel crests? Is 'Doc' Ceresi big and stocky, or your standard tiny female Twi'lek? Is Plourr an Amazonian Beauty or not? Is Isardyoung-looking◊ or not◊?
Bothans have variously been drawn as looking more like lions, horses, or goats.
Vampirella: Vampirella's outfit is sometimes drawn as a one-piece, form-fitting swimsuit with a massive Cleavage Window and open back, but other times as a tiny, physics-defying strip of fabric that pretty much only covers her nipples and crotch. Her boots vary in length from over-the-knee to only covering half her ankles. And then her body type fluctuates between voluptuous and muscular, and some artists give her a very youthful, almost teenage appearance while others draw her as a grown woman.