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* One early issue implies that Charles has unrequited romantic feelings towards Jean, which he keeps quiet due to TheChainsOfCommanding and angst over being a GeniusCripple. Later runs would make Xavier old enough to have been Jean's father, and to have recruited her into the X-Men as a child, which makes this notably odd.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), Jean Grey had actually been recommended to attend the Xavier school by what was implied to be a US intelligence agency, ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman|MarvelComics}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, [[Characters/MarvelComicsMagneto Magneto]], in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), Jean Grey had actually been recommended to attend the Xavier school by what was implied to be a US intelligence agency, ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman|MarvelComics}} was a JerkAss (mission briefing who would sometimes lead to him attacking attack the rest of the team) team for fun, and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, [[Characters/MarvelComicsMagneto Magneto]], in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman|MarvelComics}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, [[Characters/MarvelComicsMagneto Magneto]], in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), Jean Grey had actually been recommended to attend the Xavier school by what was implied to be a US intelligence agency, ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman|MarvelComics}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, [[Characters/MarvelComicsMagneto Magneto]], in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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** For the first few years, all of the X-Men, bar Iceman, wore matching uniforms in dark blue and bright yellow, complete with cowls. They only varied slightly to accommodate their respective powers, i.e Cyclops had his visor, Angel had his wings and Beast usually skipped the gloves and boots. The uniforms were unisex too, Jean Grey as Marvel Girl had pretty much the exact same outfit as her male counterparts, although her hair remained visible.
** Iceman himself started out looking like a walking snowman that ran around in a pair of boots. It took several issues until he started looking like he was either made out of ice, or coated in it.
** Iceman himself started out looking like a walking snowman that ran around in a pair of boots. It took several issues until he started looking like he was either made out of ice, or coated in it.
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* ''ComicBook/MutantMassacre'' and ''ComicBook/TheFallOfTheMutants'' were the earliest BatFamilyCrossover events, not just for the X-Men but for comics as a whole and it shows. Both stories had a strange way of doing things unlike how things would happen in later events. For instance, in the ''Mutant Massacre'', one could read, say, ''ComicBook/UncannyXMen'' to see what was going on, but if you wanted to know why X-Factor briefly showed up or where the New Mutants disappeared to, you could turn to those books to find out. ''Fall'' went with a strange ThreeLinesSomeWaiting take where events from one title are hinted at in another, but hold no real weight until the end. ''ComicBook/{{Inferno}}'' would be the TropeCodifier for just having the entire story being told consecutively through each major title.
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* ''ComicBook/MutantMassacre'' and ''ComicBook/TheFallOfTheMutants'' were the earliest BatFamilyCrossover events, not just for the X-Men but for comics as a whole and it shows. Both stories had a strange way of doing things unlike how things would happen in later events. For instance, in the ''Mutant Massacre'', one could read, say, ''ComicBook/UncannyXMen'' to see what was going on, but if you wanted to know why X-Factor briefly showed up or where the New Mutants disappeared to, you could turn to those books to find out. ''Fall'' went with a strange ThreeLinesSomeWaiting take where events from one title are hinted at in another, but hold no real weight until the end. ''ComicBook/{{Inferno}}'' ''ComicBook/{{Inferno|1988}}'' would be the TropeCodifier for just having the entire story being told consecutively through each major title.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, [[Characters/MarvelComicsMagneto Magneto]], in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman}} Comicbook/{{Iceman|MarvelComics}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, [[Characters/MarvelComicsMagneto Magneto]], in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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EarlyInstallmentWeirdness in this series.
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** In issue #39 of the original run, four of the original five X-Men received new individualised costumes (Iceman's clothes vanished whenever he took on his ice form, so he didn't really need one) to replace their old uniforms. While Cyclops' costume became more or less his standard look going forward, none of the others really caught on. Jean Grey has occasionally donned hers since, Beast's was largely discarded after his blue furry transformation, and Angel's was ditched for a different look after just a handful of issues.
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* Havok has brown hair in his first couple of appearances. He was quickly switched to blond though.
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* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood of Evil Mutants". Quicksilver's outfit was green with white lightning bolts on it while the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits would shift into its more recognizable designs and colors and Wanda's hair would be a more reddish-brown.
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* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood Brotherhood of Evil Mutants". Quicksilver's outfit was green with white lightning bolts on it while Mutants. They quickly left Magneto's employ and became members of the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits Avengers, which would shift into its more recognizable designs and colors and Wanda's hair would or less be a more reddish-brown.their status quo for the next few decades.
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* ''ComicBook/MutantMassacre'' and ''ComicBook/TheFallOfTheMutants'' were the earliest BatFamilyCrossover events, not just for the X-Men but for comics as a whole and it shows. Both stories had a strange way of doing things unlike how things would happen in later events. For instance, in the ''Mutant Massacre'', one could read, say, ''ComicBook/UncannyXMen'' to see what was going on, but if you wanted to know why X-Factor briefly showed up or where the New Mutants disappeared to, you could turn to those books to find out. ''Fall'' went with a strange ThreeLinesSomeWaiting take where events from one title are hinted at in another, but hold no real weight until the end. ''ComicBook/{{Inferno}}'' would be the TropeCodifier for just having the entire story being told consecutively through each major title.
to:
* ''ComicBook/MutantMassacre'' and ''ComicBook/TheFallOfTheMutants'' were the earliest BatFamilyCrossover events, not just for the X-Men but for comics as a whole and it shows. Both stories had a strange way of doing things unlike how things would happen in later events. For instance, in the ''Mutant Massacre'', one could read, say, ''ComicBook/UncannyXMen'' to see what was going on, but if you wanted to know why X-Factor briefly showed up or where the New Mutants disappeared to, you could turn to those books to find out. ''Fall'' went with a strange ThreeLinesSomeWaiting take where events from one title are hinted at in another, but hold no real weight until the end. ''ComicBook/{{Inferno}}'' would be the TropeCodifier for just having the entire story being told consecutively through each major title.title.
* Like the Avengers, the X-Men did not initially have their own CoolPlane, instead relying on their X-Copter (and later, an appropriated Sentinel craft) and civilian vehicles like cars, airliners and even cruise ships to travel. The team would not get their iconic Blackbird until the Claremont run.
* Like the Avengers, the X-Men did not initially have their own CoolPlane, instead relying on their X-Copter (and later, an appropriated Sentinel craft) and civilian vehicles like cars, airliners and even cruise ships to travel. The team would not get their iconic Blackbird until the Claremont run.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, ComicBook/{{Magneto}}, in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, ComicBook/{{Magneto}}, [[Characters/MarvelComicsMagneto Magneto]], in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
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* When ComicBook/{{Gambit}} first appeared in ''Uncanny X-Men'' #266, he charged objects with green bolts from his eyes. Later appearances went with the much more intuitive idea to have him use his hands.
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* When ComicBook/{{Gambit}} first appeared in ''Uncanny X-Men'' #266, he charged objects with green bolts from his eyes. Later appearances went with the much more intuitive idea to have him use his hands.hands.
* ''ComicBook/MutantMassacre'' and ''ComicBook/TheFallOfTheMutants'' were the earliest BatFamilyCrossover events, not just for the X-Men but for comics as a whole and it shows. Both stories had a strange way of doing things unlike how things would happen in later events. For instance, in the ''Mutant Massacre'', one could read, say, ''ComicBook/UncannyXMen'' to see what was going on, but if you wanted to know why X-Factor briefly showed up or where the New Mutants disappeared to, you could turn to those books to find out. ''Fall'' went with a strange ThreeLinesSomeWaiting take where events from one title are hinted at in another, but hold no real weight until the end. ''ComicBook/{{Inferno}}'' would be the TropeCodifier for just having the entire story being told consecutively through each major title.
* ''ComicBook/MutantMassacre'' and ''ComicBook/TheFallOfTheMutants'' were the earliest BatFamilyCrossover events, not just for the X-Men but for comics as a whole and it shows. Both stories had a strange way of doing things unlike how things would happen in later events. For instance, in the ''Mutant Massacre'', one could read, say, ''ComicBook/UncannyXMen'' to see what was going on, but if you wanted to know why X-Factor briefly showed up or where the New Mutants disappeared to, you could turn to those books to find out. ''Fall'' went with a strange ThreeLinesSomeWaiting take where events from one title are hinted at in another, but hold no real weight until the end. ''ComicBook/{{Inferno}}'' would be the TropeCodifier for just having the entire story being told consecutively through each major title.
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** In issue #39 of the original run, four of the original five X-Men received new individualised costumes (Iceman's clothes vanished whenever he took on his ice form, so he didn't really need one) to replace their old uniforms. While Cyclops' costume became more or less his standard look going forward, none of the others really caught on. Jean Grey has occasionally donned hers since, Beast's was largely discarded after his blue furry transformation, and Angel's was ditched for a different look after just a handful of issues.
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* Havok has brown hair in his first couple of appearances. He was quickly switched to blond though.
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** His early interactions with Cyclops (according to his later backstory, knowing full well he was talking to his own father) show no sign of familiarity, to the point that Cable even addresses Scott as "Summers". This contrasts markedly with his sister Rachel's very emotional reactions to Scott and Jean in her early appearances after arriving in the present.
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* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood of Evil Mutants". Quicksilver's outfit was green with white lightning bolts on it while the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits would shift into its more recognizable designs and colors and Wanda's hair would be a more reddish-brown.
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* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood of Evil Mutants". Quicksilver's outfit was green with white lightning bolts on it while the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits would shift into its more recognizable designs and colors and Wanda's hair would be a more reddish-brown.reddish-brown.
* When ComicBook/{{Gambit}} first appeared in ''Uncanny X-Men'' #266, he charged objects with green bolts from his eyes. Later appearances went with the much more intuitive idea to have him use his hands.
* When ComicBook/{{Gambit}} first appeared in ''Uncanny X-Men'' #266, he charged objects with green bolts from his eyes. Later appearances went with the much more intuitive idea to have him use his hands.
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** Speaking of Beast, after leaving the ''X-Men'', he briefly starred in ''Amazing Adventures'', where he first gained his furry, ape-like form. However, the first issue was significantly DarkerAndEdgier, likely influenced by the popularity of horror comics in the 70s, and had a major subplot about Beast possibly losing his humanity and becoming a feral monster. This would seem quite odd to modern readers, since Beast maintaining [[GeniusBruiser his immense intelligence and friendly personality in spite of his monstrous appearance]] is probably one of his most iconic character traits. He also had a HealingFactor during these stories, something that was dropped by later writers. Additionally, back in the Silver Age, Beast was generally written as more of a stereotypically uptight nerd (save for the ''very'' early issues mentioned above, where Stan Lee wrote him as a dumb brute). Hank's jokier, more affable characterization wasn't introduced until Steve Englehart made the character a member of Comicbook/TheAvengers during TheSeventies, and his sudden personality shift was actually notable enough that other heroes even commented on it in-story. Oh, ''and'' he was gray at first.
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** Speaking of Beast, after leaving the ''X-Men'', he briefly starred in ''Amazing Adventures'', where he first gained his furry, ape-like form. However, the first issue was significantly DarkerAndEdgier, likely influenced by the popularity of horror comics in the 70s, and had a major subplot about Beast possibly losing his humanity and becoming a feral monster. This would seem quite odd to modern readers, since Beast maintaining [[GeniusBruiser his immense intelligence and friendly personality in spite of his monstrous appearance]] is probably one of his most iconic character traits. He also had a HealingFactor during these stories, something that was dropped by later writers. Additionally, back in the Silver Age, Beast was generally written as more of a stereotypically uptight nerd (save for the ''very'' early issues mentioned above, where Stan Lee wrote him as a dumb brute). Hank's jokier, more affable characterization wasn't introduced until Steve Englehart made the character a member of Comicbook/TheAvengers during TheSeventies, and his sudden personality shift was actually notable enough that other heroes even commented on it in-story. Oh, ''and'' he was gray at first. The "Beast becoming feral" storyline was revisited in the first series of ''ComicBook/WhatIf''.
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* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood of Evil Mutants". Quicksilver's outfit was green with while lightning bolts on it while the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits would shift into its more recognizable designs and colors and Wanda's hair would be a more reddish-brown.
to:
* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood of Evil Mutants". Quicksilver's outfit was green with while white lightning bolts on it while the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits would shift into its more recognizable designs and colors and Wanda's hair would be a more reddish-brown.
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!!''Franchise/XMen''
* HealingFactor characters ComicBook/{{Wolverine}}, Sabretooth and ComicBook/{{Deadpool}} are depicted as sustaining injuries over a length of time in early appearances, compared to later appearances where healing appears near instant. Sabretooth's face was injured in ''The Spectacular Spider-Man'' (vol. 1) #116 and still scarred by his next appearance in #119. In an ''ComicBook/XForce'' appearance, Deadpool complains his broken jaw left him hospitalized for a few weeks. One can assume characters had weaker healing factors in the past, but newer stories set in the past still depict a near instant healing factor.
* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, ComicBook/{{Magneto}}, in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
** Speaking of Beast, after leaving the ''X-Men'', he briefly starred in ''Amazing Adventures'', where he first gained his furry, ape-like form. However, the first issue was significantly DarkerAndEdgier, likely influenced by the popularity of horror comics in the 70s, and had a major subplot about Beast possibly losing his humanity and becoming a feral monster. This would seem quite odd to modern readers, since Beast maintaining [[GeniusBruiser his immense intelligence and friendly personality in spite of his monstrous appearance]] is probably one of his most iconic character traits. He also had a HealingFactor during these stories, something that was dropped by later writers. Additionally, back in the Silver Age, Beast was generally written as more of a stereotypically uptight nerd (save for the ''very'' early issues mentioned above, where Stan Lee wrote him as a dumb brute). Hank's jokier, more affable characterization wasn't introduced until Steve Englehart made the character a member of Comicbook/TheAvengers during TheSeventies, and his sudden personality shift was actually notable enough that other heroes even commented on it in-story. Oh, ''and'' he was gray at first.
** In ''X-Men'' #1, Magneto can manipulate the magnetic field around objects, meaning he can move any object whether or not it contains magnetic metal; in other early stories, he seemed to be able to do ''anything'' as long as he was said to be doing it "magnetically", leading to amusing panels where Magneto seems to be able to control "animal magnetism" or can manipulate people thanks to his "magnetic personality". Professor X introduces a training machine instead of the Danger Room. In ''X-Men'' #2, Professor X is called "Dr. X". In ''X-Men'' #5, The X-Men have now finished their training at Xavier's school. In ''X-Men'' #6, The X-Men's cook is mentioned, and never seen again. Professor X and Magneto both have the ability to project mental images to contact Namor. In ''X-Men'' #7, The X-Men have now graduated from Xavier's school. In ''X-Men'' #8, Cyclops is called Sommers. The Angel is called Bobby. (Mind you, those two things seem like errors; in issue 1-7, both heroes have their familiar names, though in the first, Scott was called "Slim," which is now officially a nickname.) In ''X-Men'' #9, Bavaria and Bulgaria are the same location. In ''X-Men'' #33, The Juggernaut steals Professor X's mental powers. This is not brought up again.
** While modern depictions of Cerebro tend to operate on the idea that only telepaths can operate it (save for special exemptions, such as when ComicBook/KittyPryde was able to modify the computer so that she could use it), that was not originally the case. In fact, Reed Richards once built his own facsimile of Cerebro, and was able to use it to track Karma in her first appearance.
** Like Magneto, Comicbook/EmmaFrost was a straight up villain in her early appearances, rather than the morally gray character she became in TheNineties. Readers familiar with her MamaBear tendencies and her love of children would probably be shocked to see the early ''ComicBook/NewMutants'' storyline where Emma kidnapped Kitty Pryde and tried to forcibly brainwash the young mutant into joining the Hellions. In fact, this would seem especially odd given the later ''X-Force'' issue where Emma told Warpath that she approved of his decision to leave the Hellions, and that she never would've forced any of her students to stay with her against their will.
* Before he was ComicBook/{{Wolverine}}'s ArchNemesis and one of the X-Men's most iconic baddies, ComicBook/{{Sabretooth}} started off as an Comicbook/IronFist villain. He was partnered with Constrictor in his second appearance (in which he was already much less efficient than in his first one), there were no hints at his mysterious backstory or connection to Wolverine, and he didn't have a healing factor either. He was also much less of a threat when he wasn't written by Creator/ChrisClaremont, getting his ass handed to him by characters like ComicBook/BlackCat. It wasn't until the 1986 "Mutant Massacre" crossover (Sabretooth was introduced in 1977) that he began to become the villain we know today. It was the first story to have him fight Wolverine on panel, as well as the first one to reference their mysterious shared past. He was also played up as a much more powerful and intimidating character than he'd been previously, and was finally confirmed to possess a healing factor like Logan's. A possible explanation for the differences in portrayal is that Chris Claremont actually had plans to reveal that all of Sabretooth's early appearances (except for the very first one) were actually [[ActuallyADoombot clones created by Nathaniel Essex]]. [[ArmedWithCanon This would have, coinkydink of coinkydinks, left the only appearances of the "real" Sabretooth to be the ones Claremont wrote.]]
* ComicBook/{{X 23}}, in her early appearances in ''ComicBook/UncannyXMen'', was shown as mocking Psylocke's mannerisms, something that went against her usual stoic and loner attitudes.
* ComicBook/{{Cable}}, being a character whose backstory was made up as things went along, has some instances:
** He started out using a lot of strange idioms (''not'' FutureSlang) which suggested that he spoke with a British accent.
** The nature of his cyborg arm changed. Originally, it was very clearly meant to be a normal appendage, albeit with weapons and the like, as Cable is seen fixing and modifying it in his early appearances, and Forge repairs it for him without incident. Later on, it was established to be the techno-organic virus consuming his arm, and his telekinesis was what was holding it back -- it ''naturally'' repairs itself and he cannot actually modify it or anything beyond making tentacles some out of it sometimes.
** Early appearances heavily implied that he was formerly a soldier for the U.S. government, with the government being keenly aware of him and his service record. This doesn't line up with later revelations that he only returned to the past as a 50-something and ran unsanctioned mercenary groups for the most part.
* ''Franchise/XMen'', Vol. 2, #50, one of the issues leading into ''ComicBook/{{Onslaught}}'' and showing signs of the WritingByTheSeatOfYourPants that was going on, sees one of Onslaught's minions Post kidnap the X-Men, a psychic warning of Onslaught's arrival, and someone attempt to kidnap ComicBook/ProfessorX, implied to be Onslaught himself--the same Onslaught who turned out to be Xavier himself in [[https://uncannyxmen.net/character-related-topics/the-road-to-onslaught-the-darker-side-of-xavier yet another time every bad thought and feeling he's tried to suppress took on a life of its own]].
* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood of Evil Mutants". Quicksilver's outfit was green with while lightning bolts on it while the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits would shift into its more recognizable designs and colors and Wanda's hair would be a more reddish-brown.
* HealingFactor characters ComicBook/{{Wolverine}}, Sabretooth and ComicBook/{{Deadpool}} are depicted as sustaining injuries over a length of time in early appearances, compared to later appearances where healing appears near instant. Sabretooth's face was injured in ''The Spectacular Spider-Man'' (vol. 1) #116 and still scarred by his next appearance in #119. In an ''ComicBook/XForce'' appearance, Deadpool complains his broken jaw left him hospitalized for a few weeks. One can assume characters had weaker healing factors in the past, but newer stories set in the past still depict a near instant healing factor.
* In the first few issues of ''ComicBook/XMen'', mutants weren't hated and feared, the X-Men were treated as celebrities (the second issue has Angel meet a bunch of fangirls), they had an official government liaison (Fred Duncan), ComicBook/{{Beast|Marvel Comics}} was DumbMuscle, Comicbook/{{Iceman}} was a JerkAss (mission briefing would sometimes lead to him attacking the rest of the team) and Comicbook/JeanGrey's telekinesis was for some reason called teleportation, even in the second issue, in which they fought an actual teleporter. Xavier didn't hesitate to hit people who knew too much with LaserGuidedAmnesia, either. Also, ComicBook/{{Magneto}}, in contrast to his contemporary portrayal as a WellIntentionedExtremist, was a straightforward bad guy without any redeeming features. He also had psychic powers that were nearly a match for Charles Xavier's, including AstralProjection.
** Speaking of Beast, after leaving the ''X-Men'', he briefly starred in ''Amazing Adventures'', where he first gained his furry, ape-like form. However, the first issue was significantly DarkerAndEdgier, likely influenced by the popularity of horror comics in the 70s, and had a major subplot about Beast possibly losing his humanity and becoming a feral monster. This would seem quite odd to modern readers, since Beast maintaining [[GeniusBruiser his immense intelligence and friendly personality in spite of his monstrous appearance]] is probably one of his most iconic character traits. He also had a HealingFactor during these stories, something that was dropped by later writers. Additionally, back in the Silver Age, Beast was generally written as more of a stereotypically uptight nerd (save for the ''very'' early issues mentioned above, where Stan Lee wrote him as a dumb brute). Hank's jokier, more affable characterization wasn't introduced until Steve Englehart made the character a member of Comicbook/TheAvengers during TheSeventies, and his sudden personality shift was actually notable enough that other heroes even commented on it in-story. Oh, ''and'' he was gray at first.
** In ''X-Men'' #1, Magneto can manipulate the magnetic field around objects, meaning he can move any object whether or not it contains magnetic metal; in other early stories, he seemed to be able to do ''anything'' as long as he was said to be doing it "magnetically", leading to amusing panels where Magneto seems to be able to control "animal magnetism" or can manipulate people thanks to his "magnetic personality". Professor X introduces a training machine instead of the Danger Room. In ''X-Men'' #2, Professor X is called "Dr. X". In ''X-Men'' #5, The X-Men have now finished their training at Xavier's school. In ''X-Men'' #6, The X-Men's cook is mentioned, and never seen again. Professor X and Magneto both have the ability to project mental images to contact Namor. In ''X-Men'' #7, The X-Men have now graduated from Xavier's school. In ''X-Men'' #8, Cyclops is called Sommers. The Angel is called Bobby. (Mind you, those two things seem like errors; in issue 1-7, both heroes have their familiar names, though in the first, Scott was called "Slim," which is now officially a nickname.) In ''X-Men'' #9, Bavaria and Bulgaria are the same location. In ''X-Men'' #33, The Juggernaut steals Professor X's mental powers. This is not brought up again.
** While modern depictions of Cerebro tend to operate on the idea that only telepaths can operate it (save for special exemptions, such as when ComicBook/KittyPryde was able to modify the computer so that she could use it), that was not originally the case. In fact, Reed Richards once built his own facsimile of Cerebro, and was able to use it to track Karma in her first appearance.
** Like Magneto, Comicbook/EmmaFrost was a straight up villain in her early appearances, rather than the morally gray character she became in TheNineties. Readers familiar with her MamaBear tendencies and her love of children would probably be shocked to see the early ''ComicBook/NewMutants'' storyline where Emma kidnapped Kitty Pryde and tried to forcibly brainwash the young mutant into joining the Hellions. In fact, this would seem especially odd given the later ''X-Force'' issue where Emma told Warpath that she approved of his decision to leave the Hellions, and that she never would've forced any of her students to stay with her against their will.
* Before he was ComicBook/{{Wolverine}}'s ArchNemesis and one of the X-Men's most iconic baddies, ComicBook/{{Sabretooth}} started off as an Comicbook/IronFist villain. He was partnered with Constrictor in his second appearance (in which he was already much less efficient than in his first one), there were no hints at his mysterious backstory or connection to Wolverine, and he didn't have a healing factor either. He was also much less of a threat when he wasn't written by Creator/ChrisClaremont, getting his ass handed to him by characters like ComicBook/BlackCat. It wasn't until the 1986 "Mutant Massacre" crossover (Sabretooth was introduced in 1977) that he began to become the villain we know today. It was the first story to have him fight Wolverine on panel, as well as the first one to reference their mysterious shared past. He was also played up as a much more powerful and intimidating character than he'd been previously, and was finally confirmed to possess a healing factor like Logan's. A possible explanation for the differences in portrayal is that Chris Claremont actually had plans to reveal that all of Sabretooth's early appearances (except for the very first one) were actually [[ActuallyADoombot clones created by Nathaniel Essex]]. [[ArmedWithCanon This would have, coinkydink of coinkydinks, left the only appearances of the "real" Sabretooth to be the ones Claremont wrote.]]
* ComicBook/{{X 23}}, in her early appearances in ''ComicBook/UncannyXMen'', was shown as mocking Psylocke's mannerisms, something that went against her usual stoic and loner attitudes.
* ComicBook/{{Cable}}, being a character whose backstory was made up as things went along, has some instances:
** He started out using a lot of strange idioms (''not'' FutureSlang) which suggested that he spoke with a British accent.
** The nature of his cyborg arm changed. Originally, it was very clearly meant to be a normal appendage, albeit with weapons and the like, as Cable is seen fixing and modifying it in his early appearances, and Forge repairs it for him without incident. Later on, it was established to be the techno-organic virus consuming his arm, and his telekinesis was what was holding it back -- it ''naturally'' repairs itself and he cannot actually modify it or anything beyond making tentacles some out of it sometimes.
** Early appearances heavily implied that he was formerly a soldier for the U.S. government, with the government being keenly aware of him and his service record. This doesn't line up with later revelations that he only returned to the past as a 50-something and ran unsanctioned mercenary groups for the most part.
* ''Franchise/XMen'', Vol. 2, #50, one of the issues leading into ''ComicBook/{{Onslaught}}'' and showing signs of the WritingByTheSeatOfYourPants that was going on, sees one of Onslaught's minions Post kidnap the X-Men, a psychic warning of Onslaught's arrival, and someone attempt to kidnap ComicBook/ProfessorX, implied to be Onslaught himself--the same Onslaught who turned out to be Xavier himself in [[https://uncannyxmen.net/character-related-topics/the-road-to-onslaught-the-darker-side-of-xavier yet another time every bad thought and feeling he's tried to suppress took on a life of its own]].
* ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch started their lives out as villains, part of Magneto's "Brotherhood of Evil Mutants". Quicksilver's outfit was green with while lightning bolts on it while the Scarlet Witch's trademark bustier had straps on it and her whipet framed her entire face. As well, Wanda's hair was black at the start. It wouldn't be until the 70s until the two's outfits would shift into its more recognizable designs and colors and Wanda's hair would be a more reddish-brown.
