In Tintin in the Land of the Soviets Tintin is in the USSR brought to a torture chamber with two Chinese executioners. Back in 1929 this seemed very odd to have two Chinese men work for the Soviets. Cue to 20 years later, in 1949, when China became Communist and suddenly it doesn't seem that strange anymore.
In "Explorers On The Moon" (1954) Tintin becomes the first man to walk on the moon. Almost 15 years later man would really walk on the moon surface.
British author Harry Thompson noted in his biography "Tintin and Hergé: a double biography" that in "The Mysterious Star" (1940) mushrooms grow to enormous size before they explode. Five years later, he wrote, the first atomic bomb would explode and produce large mushroom clouds...
Astérix : In "Asterix in Britain" (1966) Asterix, Obelix and their British friend Anticlimax cross the English Channel and arrive while it rains. Obelix remarks that building a tunnel between the French and British coast might be a good idea. Anticlimax answers: "We thought of a tunnel ourselves. We've even started digging one but it seems to be taking a jolly long time, what." When the story was first published in 1966 people had thought of building a tunnel between Great Britain and France for centuries, but it didn't seem likely that this plan would ever come to fruition.
In De Ark van Nero (Nero's Arc) (1953) Nero predicts a great flood and builds an arc in prevention. Only a few months later Flanders and the Netherlands were indeed struck by a large flood, causing many casualties.
In De Paarse Futen (1968) Adhemar sends two American astronauts to the moon with a magic wand, thus beating the Soviets in the space race. Only a year later the Americans landed on the moon for real.
In De Grote Geheimzinnigaard (1993) Nero wishes Colombian drug baron Pablo Escobar literally to the moon, thus killing him. Ironically enough Escobar would be shot dead by the police that same year.
The Incredible Hulk #418 featured Marlo selling her soul to Mephisto (she thought it was just a dream) in order to have a perfect wedding day. Over a decade later Spider-Man: One More Day comes out, a story which involves Mephisto convincing Peter Parker to sell his marriage to him.
In Amazing Fantasy #15, the introduction of Spider-Man back in 1962, the wrestler Peter defeats is called Hogan. When John Byrne redid the origin in the late '80s, he deliberately redesigned Crusher Hogan to look like Hulk Hogan as a result of this. The Movie later referenced this by having Macho Man Randy Savage play the wrestler, who was called Bonesaw. Macho Man and Hogan have a long past.
Another one with Spider-Man. Peter David wrote that Ned Leeds was the original Hobgoblin. Not only was this questionable, but the original writer of the Hobgoblin mystery, Roger Stern, came back to do a miniseries where it was revealed Leeds wasn't the original Hobgoblin at all. Even if David himself doesn't appreciate the irony, one does have to find it a little funny that the same thing happened to him about the (Green) Goblin mystery in Spider-Man 2099. That said, you can't really place the blame on Peter David, though, since it was all a massive editorial imbroglio. Not quite as bad as the Clone Saga, but every time the writer or editor on Amazing Spider-Man was changed, the Hobgoblin story got further and further from where Stern had meant it to go. And with the current comic pulling Canon Discontinuity on everything that happened after David left, he was able to do what Stern did with Roderick Kingsley and reveal that Father Jennifer is the Goblin.
There's a scene in One More Day where Mephisto tells Spider-Man of the infinite number of alternate paths his life could have taken, and Spidey asks if there's one where he was a little girl. Years later in Spider-Verse, at least two alternate young girl versions of Spider-Man (Penelope Parker and Peni Parker) were introduced.
As of 2015, Miles is now officially part of the mainstream Marvel Universe alongside Peter.
In issue #101 of The Amazing Spider-Man, Peter takes a potion that was intended to remove his powers, but instead gave him two extra pairs of arms. While lamenting his situation, Peter calls himself a "Human Centipede". Forty-seven years later, Peter turned out to actually have it a lot better than the otherHuman Centipede.
About a decade before the Disney buyout, the first arc of Ultimate Spider-Man had a meaningful photo showing the Parker family at Disney World, complete with a young Peter wearing Mickey Mouse ears.
In a crossover between Miles Morales and Spider Gwen the two end up hopping throughout various alternate universes even ending up in metropolis int he dc universe briefly. Not only is Brian Micheal Bendis the creator of Miles working at DC but guess what character he's writing?
In the videogame for Deadpool, back in 2013, there was an entire mission for him to save Rogue. Deadpool's main motivation to save Rogue was to have her fall in love with him. After finding her, she kisses him to absorb his healing factor, weakening him enough to make him pass out. In one Uncanny Avengers chapter, Rogue gives Deadpool a Big Damn Kiss, after developing feelings for him, which heals him of earlier injuries. After which, they share two more big kisses, the last being cut short due to Wonder Man awakening and being released from Rogue.
When asked if Rogue would be in a relationship with someone other than Gambit or Magneto, Word of God stated that a relationship seemed to be developing for her at that moment. It's possible he was referring to Deadpool, whom Rogue started to respect as a friend and comrade. With Word of God also stating that they'd always planned the two becoming friends.
This similarly makes the X-Men/Next Generation crossover comics/novels that much funnier, since many people pause at the resemblance between Xavier and Picard. It's even lampshaded by Storm in the novel.
Even more hilarious, Patrick Stewart related a tale from that comic while on The Daily Show promoting X2: X-Men United. Apparently, he was told about the comic during its production, as well as the fact that Picard and Xavier would be "facing off" on the cover. Sir Stewart jokingly objected, claiming "If I took that role someday, I'd be on the cover twice. That just doesn't seem fair." It's good to know that Sir Patrick Stewart himself appreciates this trope.
In issue #41 of Generation X, Skin went to rent a bunch of horror movies, the titles of which were parodies of classic horror movies (like Yell! instead of Scream. But among these horror flicks was a film called Sicko, which nowadays makes readers think more of Michael Moore and less of Psycho.
This cover of Avengers 221◊ published in 1982 is amusing when you look at the original lineup for Brian Michael Bendis's New Avengers published 23 years later.
Back in Avengers #151, a news report cited Spider-Man, Daredevil, and Namor as three solo heroes who had turned down offers to join the team, closing with "Some people just aren't meant for teams, it seems." All three of those characters have since had high profile stints with the team, with Spider-Man and Daredevil joining in the above-mentioned New Avengers era.
An old issue of Thunderbolts had a scene where Hawkeye mentioned that Wolverine was the exact kind of loose cannon who would never be granted Avengers membership. Guess who joined the Avengers back in 2005 and remained with the team for close to a decade?
There was also a much older story where Captain America himself told Wolverine he'd never be an Avenger. This is such a prominent example of this trope that when a much later Deadpool issue featured Cap recounting this incident, Deadpool immediately burst out laughing at the irony.
Another Hawkeye-related one; Hawkeye decided to become a hero after watching Iron Man in action and wanted to be a superhero like him. In the mid-late 2000s Iron Man came out, and reportedly, when Jeremy Renner watched it, he wanted to play a superhero, just like Iron Man. He got his wish, how? By playing Hawkeye in The Avengers.
In an issue of Avengers Solo, Hawkeye criticized a Dirty Harry-style vigilante film by saying he longed for the days when a hero could save the day without killing the bad guys. In the Avengers films, Hawkeye kills people quite liberally, and is in fact described as a "Master assassin" by Iron Man at one point.
Hawkeye's stance against killing in general. In the original comics, he was probably one of the Avengers who was most strongly opposed to the idea of using deadly force, and was extremely shaken after he accidentally killed Egghead in self defense. Cut to Civil War II, where he murders Bruce Banner in order to save the world from the Hulk, and is even described by Banner as being one of the few Avengers who could kill someone and then live with the guilt.
In an issue of Kurt Busiek's Avengers run, Namor mocked D-Man and suggested that he go join the X-Men, since they have much lower standards when it comes to recruitment. Namor later ended up joining the X-Men and played a major role in the Avengers vs. X-MenCrisis Crossover.
Speaking of which, during Mark Gruenwald's Captain America run, Jack Monroe got into a fight with D-Man and accused him of hitting on Jack's girlfriend, despite D-Man insisting that they were just friends and that he wasn't trying anything untoward. Years later during Nick Spencer's run, D-Man would be revealed to be gay, making Jack's reaction even more disproportionate in retrospect.
During the iconic "Kang Dynasty" storyline from Busiek's run, Triathlon lamented that he'd probably end up as one of those D-list Avengers nobody remembers, citing Mantis, Rage, and Deathcry as examples. While he was correct concerning himself, Mantis would later end up as one of the stars of Guardians of the Galaxy Vol. 2 and Avengers: Infinity War.
A major reason Marvel cancelled The Avengers and relaunched it as New Avengers was because they wanted to get rid of the "dead weight" (characters who weren't in live actionmovies) and focus on their A-listers like Spider-Man and Wolverine, with Hawkeye and the Scott Lang version of Ant-Man specifically chosen to die because editorial thought they were worthless characters. Now, of those "dead weight" heroes, Hawkeye was one of the stars of The Avengers (one of the highest-grossing films of all time), Black Panther had his own massively successful film, The Falcon, Scarlet Witch and The Vision are all Avengers as of Avengers: Age of Ultron, Ant-Man and The Wasp and Carol Danvers are all getting their own solo films, while the X-Men are supposedly being buried because Marvel doesn't have the rights to make movies off of them, and Spider-Man may only be escaping that fate because Marvel and Sony were able to reach a deal to integrate Spidey into the MCU. What a difference a few years makes...
In the ultimate example of just how much the notoriety of Marvel's heroes shifted between 2005 and 2018, when Marvel did an A-list relaunch of the Avengers after No Surrender, it included several characters who had previously been dismissed as also-rans back when Bendis took over the series, but were now considered big deals because of the MCU.
A major plot point in The Last Defenders had Iron Man forming a new Defenders team that had almost nobody from the previous iterations of the team, and without the consent of any of the original Defenders. He defended his decision by basically suggesting the new members made for a better, more marketable team despite having no connection to the Defenders. Later in the series, Nighthawk even had a breakdown where he said that people were taking the Defenders away from him and destroying the team's rich legacy. Flash forward to 2017 and Marvel announces a new Defenders series to tie into the Netflix show, which stars four popular, marketable characters with no real connection to any of the past incarnations of the team.
Once, Deadpool claimed, "If you looked like Ryan Reynolds crossed with a shar-pei, you'd understand!" Ryan Reynolds had already outed himself as a Deadpool fan and expressed interest in playing him in a movie at this point, though.
An old solicit cast doubt on the prospect of the character dying, humorously asking if Marvel would ever kill off a character who might have a movie deal (this was when it was rumored Deadpool would be getting a spin-off from X-Men Origins: Wolverine). When you consider that Marvel has recently been accused of deliberately sabotaging characters whose film rights they do not own (such as the Fantastic Four and X-Men), it becomes easier to come to the conclusion "Yes. Yes they would."
A variant cover for the first issue of Uncanny Avengers had Deadpool listing reasons why he should be part of the group, despite lacking any real qualifications to be an Avenger. A few years later, he joined the post-Secret Wars relaunch of Uncanny Avengers as an official member of the team.
In the 1990s, Marvel published a few comic books starring Disney characters. They have since been bought by Disney.
In the early days, Thor, in his human guise of Dr. Donald Blake, had a romance with his nurse, Jane Foster. However, he kept the secret of his dual life from her, and Jane, knowing that there was some deep secret that the man she loved refused to tell her, slipped into a crippling depression that took a toll on her physical health. Donald finally snapped her out of it by transforming into Thor at her bedside to prove his love, saving her from "dying of a broken heart". Guess who got to play Jane in the Marvel Cinematic Universe? Natalie Portman.
In one of the first issues of Thor to feature Loki, Jane remarks that Loki must be good since he's so handsome. Especially funny considering all of the modern fangirls insisting that Loki is redeemable due in no small part to him being played by the handsome and charming Tom Hiddleston. Lampshaded by the official Marvel Tumblr, which called the issue "the first appearance of Loki, and the first appearance of a Loki fangirl."
Also, there was a famous storyline where Jane was given the power of an Asgardian, only to be stripped of said power after Odin decreed that she was unworthy of ever being a god. This is rather amusing now that she's actually proven herself worthy of wielding Mjölnir and become the new Thor.
When Thor needed a new identity in Walt Simonson's run, Nick Fury mentioned that he'd have to settle for an apartment in Brooklyn, since "Even S.H.I.E.L.D. can't find nothin' in Manhattan." With prices in Brooklyn having skyrocketed in recent years thanks to gentrification, they'd be lucky to find a place there for Thor to live nowadays.
In Marvel Year In Review 1993, there was a fake ad for Alpha Flight: "We're the Canadian Football League of superhero teams! (Except our best heroes don't go to the U.S. and join the Avengers)". Several years later, Wolverine joined the Avengers.
They also had a bit where they discussed the progression of Darker and Edgier versions of characters, and theoretical Darker-er and Edgier-er extensions. One of them was named Red Hulk. Later on, Red Hulk became a Hulk villain.
The Master Race is alive and well and comprises the core of the Avengers!
In Marvel Civil War, shapeshifting alien Hulkling of the Young Avengers replaced Hank Pym to free the anti-registration heroes. This becomes funny when Secret Invasion reveals that the Hank Pym Hulkling replaced was himself a shapeshifting alien that had replaced Hank Pym.
And before that in an issue of Fantastic Four, as a prank, it showed Hank Pym using an image inducer to pose as a car stealing skrull.
This panel◊ becomes funnier after knowing what Captain America does during the Civil War storyline.
An old Marvel Comics Star Wars comic dated about 1980 (before Empire or Jedi came to theaters) had a letter to the editor complaining about how the writers of the comic were writing Luke and Leia out of character saying and I quote "they're obviously in love with each other but you're writing them like they're brother and sister or something."
One issue of the Marvel Star Wars comic, also pre-Empire, had a story about Darth Vader and Luke's father as two different people. Naturally, going off the first movie there was no reason to suspect they weren't two different people, but it's still hard to ignore.
Much of Marvel Star Wars came out between the films. After The Empire Strikes Back, they ran a storyline involving a new Imperial superweapon called the Tarkin. During a briefing, someone says to our heroes, "It answers a lot of questions we've been asking ourselves lately. Like for instance, why hasn't the Empire constructed a second battle station like the Death Star that almost destroyed our base on Yavin?" (The writers had originally intended to depict a second Death Star, but Lucasfilm had vetoed that without explaining why.)
The entire reason Marvel declined to publish Dark Empire and gave up the license to Star Wars altogether was that they thought nobody could possibly be interested in the franchise anymore. Hindsight is always 20/20, huh?
In an early issue, a character mentioned a TV series called "Agent of S.H.I.E.L.D.". This was referencing Nick Fury, Agent of S.H.I.E.L.D., a then-current feature in another corner of Marvel's 'verse. 49 years later, we got Agents of S.H.I.E.L.D. as an actual TV series. (Aw, just one letter off …)
Issue #58 of the second run of What If?, released in 1994, asked the question of what would have happened if the Punisher had killed Spider-Man. One splash page of the issue shows a montage of big name Marvel superheroes with ties to Spider-Man beating the crap out of the Punisher. This was released only one year before Garth Ennis's The Punisher Kills the Marvel Universe.
The very first issue of What If...? asked "What If Spider-Man had joined the Fantastic Four?"; since then, this has actually happened not once, but twice in 616 continuity - Spidey was a member of the short-lived New Fantastic Four, and later a member of the proper team in place of his dead friend Johnny Storm.
Moreover, What If...? #30's premise was "What If Spider-Man's Clone had not died?", based on a then-recent story arc. Then in the 90s, the idea was revisited in earnest in the infamous The Clone Saga.
Similarly, issue #51 of volume 2 was "What If the Punisher became Captain America?", which later became an actual Punisher: War Journal storyline in 2007. Granted, he was never officially Cap, but this was before Bucky Barnes stepped into the role, meaning he was effectively the closest thing to the real deal out there.
Speaking of Bucky, there's an issue of the first volume ("What If Captain America & Bucky had not disappeared at the end of World War II") where at one point, he takes up the Captain America mantle to replace an aging Steve Rogers. That's right, Bucky was Cap a good 31 years before he takes up the identity in the main Marvel Universe.
An issue of The Invaders from the 70's had a scene where Bucky makes a joke about going through an identity crisis. This was years before readers found out he'd been Brainwashed and transformed into a murderous Soviet assassin.
Not only that, but issue #9 of the second volume asked "What If the New X-Men had died on their very first mission?" X-Men: Deadly Genesis would reveal that this is exactly what actually happened, because Professor X had gathered a new team to save the originals from Krakoa before the more familiar "All-New, All-Different" guys.
Washed-up actor Henry Hellrung, alias Anthem, was made leader of The Order, California's Initiative team, by his friend Tony Stark. Henry was famous for playing Iron Man on television, until alcoholism ruined his career. To recap, he's an actor who got fired because of issues with addiction, then came back into the fore of media attention after accepting an offer to do with Iron Man... not unlike Robert Downey, Jr. The Order ran for 10 issues in 2007; Iron Man came out in May 2008
The tie-in to Civil War has a scene where a group of NSA employees discuss the public backlash stemming from the death of Goliath, and one of them claims that it's irrelevant since the black vote won't matter in the next presidential election anyway. He was slightly off with that prediction.
Marvel Team-Up #100, the story that established that Black Panther and Storm were childhood friends, ends with a caption that's rather amusing given that they later ended up in a very controversial marriage that ultimately ended in divorce:
As friends, they may wish for more, but this is what they are, what they will remain. Forever.
In an 1960s Fantastic Four story, the titular team is teaching T'Challa how to play baseball. Fifty or so years later, Black Panther would be played by Chadwick Boseman, who played Jackie Robinson in the movie 42. Furthermore, that film has Robinson comment that a lot of racist baseball fans are "still fighting the Civil War". Boseman would later make his debut as Black Panther in the movie Captain America: Civil War.
Another one regarding the Fantastic Four: Black Panther's first appearance in that comic has him fight the titular team. Fifty years later in Civil War, Black Panther sides against Captain America (played by Chris Evans) - a former Human Torch. After that movie opened in theatres, it was announced that Michael B. Jordan, ANOTHER Human Torch, would be joining the cast of Black Panther (2018) as Erik Killmonger.
In another Disney-related coincidence, Goliath referred to Wakanda as a "jungle version of Disneyland" in The Avengers #87, the story that recounted Black Panther's origin.
As the "One Nation Under Doom" event in the Marvel 2099 line drew to a close John Herod used a clone of Captain America as a puppet to overthrow Doom with the cover story that Steve Rogers had once again been put in suspended animation in a block of ice. In Manifest Destiny, we find out the real Steve Rogers's fate and as it turns out, history really did repeat itself.
During the infamous "Armor Wars" storyline in Iron Man, there was an issue where Rhodey dressed up in Whiteface in order to pose as the villain Electro. While removing the makeup, a thoroughly embarrassed Rhodey said he hoped there weren't any black people around to see him like this. This becomes funny when you realize that in The Amazing Spider-Man 2, Electro was Race Lifted into a black man.
During Mark Gruenwald's historic Captain America run, there was a scene where the government was looking up potential candidates to become the new Cap after Steve Rogers retired from the role. The Falcon was briefly brought up as a candidate, but one of the politicians present shot down the idea while saying something to the effect of "The public isn't ready for a black Captain America". When you realize the controversy around the later Truth: Red, White, & Black series (which established there WAS indeed a black Captain America), you can't help but feel that maybe the politician was (sadly) onto something...
In the Marvel NOW! parody Marvel: Now What?!, the High Evolutionary predicted that the next Crisis Crossover would involve the heroes and villains swapping allegiances, with Stilt-Man being forced to defend the Earth from the Avengers. Then came Axis...
The revelation in All-New X-Men that Iceman was gay retroactively cast some older stories in a much different light:
Fans like to joke that a Cutaway Gag in an episode of Family Guy actually predicted this years in advance, as it depicted Iceman as a closeted gay man in a loveless marriage with a woman.
The very first issue of X-Men back in 1963 had a scene where all of the other male X-Men were practically drooling over the newly-arrived Jean Grey, while Iceman made it clear he didn't get what all the fuss was about.
Iceman: A girl...big deal!
Bizarre Adventures #27 had a black-and-white short story that opened with Bobby lovingly admiring an ice sculpture of Angel, noting how handsome and impressive it looked. Decades later in All-New X-Men, the time-displaced teenage Bobby would admit to Jean that he found Angel quite attractive. It also included a scene where Bobby, while modifying one of the statues, compared himself to Leonardo da Vinci and Michelangelo Buonarroti, both of whom are widely contended to have been gay by modern scholars. The Bizarre Adventures story was so heavy on unintentional Foreshadowing that it was later reprinted in X-Men #600, the issue where the adult Iceman came out of the closet.
In New Defenders #131, Bobby pranked a female college student by convincing her that he and Angel were dating.
During the 90s, Bobby got dumped by his girlfriend Opal after she got sick of being neglected. While lamenting the breakup, Bobby noted that most guys his age already had wives or girlfriends, and found his own lack of interest in Opal to be odd.
In Uncanny X-Men #319, Bobby brought Rogue home to meet his parents, which ended badly due to his dad's anti-mutant bigotry. The issue read a lot like a gay man having his female friend act as a beard in order to fool his family, an undercurrent that was possibly intentional given the way mutants are often treated as a metaphor for oppressed minority groups.
In another issue, Emma Frost sarcastically suggested that Iceman was not cut out to be a superhero, and would be much more comfortable pursuing his true passion: interior decorating. For those who don't get the barb, interior decorating is a profession that is stereotypically associated with women and gay men.
In 1993, Marvel did a line-wide stunt where each annual introduced a brand new character. Mark Gruenwald built these guys up as the next big thing while contrasting them with Squirrel Girl, whom he used as an example of a new hero who likely wasn't ever gonna appear again. In the present day, Squirrel Girl remains a fan favorite and has her own seriesand a TV show, while the vast majority of the new characters from the 1993 annuals are either dead or in Comic-Book Limbo.
Disney once threatened to sue Marvel for Howard the Duck's overly close resemblance to Donald Duck, and Marvel had him finding a new outfit in-universe. And to think that Marvel itself was since bought out by Disney. (and a comic in 2015 even has him taking a shot at Disney World)
In Linkara's review of Ultimatum, he said that Doom's plan was so stupid and full of uncontrollable variables that it had to have been thought up by a Doombot. A few years later in Ultimate FF, it was indeed revealed that the Doctor Doom seen in Ultimatum was an impostor wearing Doom's armor.
The first part of Giant-Size Super-Villain Team-Up #2, cover-dated June 1975, is about an oil tanker crossing the Sub-Mariner's territory because the Suez Canal has been closed since 1967. When June actually came around, one of the first things to happen was the reopening of the canal.
In a case more related to real life: The Great Comics Crash of 1996 happened in part because people were stockpiling on comics hoping they'd be valuable - in spite of the fact old comics were selling for such high prices in the first place only because they were extremely rare, and the work made during the early 1990s was falling from grace heavily. Yet, as one website shows, New Mutants #98 actually is sought by many more than two decades later for being the debut of Deadpool (though the site makes clear it's probably not as rare as stuff made between the 1930s and 1970s, and thus hardly worthy of prices in the triple digits).
From Amazing World of DC Comics, July 1976, describing the Great Disaster at DC Comics:
The pivotal time will be October, 1986 ... and in that month, the future of the world will be decided. Either the path of the Great Disaster will be taken, and civilization will fall, or the path of sanity will prevail and the Legion of Super-Heroes will emerge triumphant a thousand years later.
That's just I Want My Jetpack, right? Well, not quite. 1986 was the turning point for The Dark Age of Comic Books. And DC comics from October 1986 include Man of Steel #1, which began the modern revamping of Superman, and Batman #400, which was the last pre-revamp Batman. Depending on whether you think the Dark Age was a great disaster, this may be amusingly prophetic...
A 1997 Justice League story had the JLA take on a mad scientist who had created a "luck machine" that altered probability in his favor, letting him win the lottery, the Nobel Prize, and become President of the USA in short order. The JLA confront him in the Oval Office and destroy his device, but when reality reorders itself, the President who thanks the team isn't the right President either, and the team realizes that reality is still broken. What's so funny about this? The "wrong" President looks just like Sarah Palin.
On the back cover of the Batman: A Death in the Family trade paperback, in which Jason Todd, the then-current Robin, was killed off, then-Batman editor Denny O'Neil jokingly said, "It would take a sleazy stunt to bring (Jason) back", though he did admit that he voted for Jason to live. In 2005, Jason was brought Back from the Dead.
Similar Word of God tripping-up occurs in the afterword to The Return Of Barry Allen, a storyline in which Barry Allen does not actually return (yet). Mark Waid hyperbolically describes being driven up a bell tower with a rifle out of sheer exasperation at people asking him to bring back Barry.
"What is it with you people?" I screamed. "Barry is Dead! Gone! Hearsed! Why can't you let him rest honorably, in peace?"
Comic Book Guy: I believe that's the sound the Green Lantern made when Sinestro threw him into a vat of acid. Eepaa!
Sadly, no vats of acid were involved.
An issue of JLA featured Superman attending the funeral of Metamorpho (again...), and was the only one there. When he questioned the priest about it, he was told that since Superman came back, everyone expected superheroes not to stay dead, so they'd lost interest in memorial services. The service took place in a park dedicated to fallen superheroes, and in an obvious bid to make the point that this wasn't always the case, that sometimes dead heroes stayed dead, the artist had four memorial statues in the scene: Ice, Oliver Queen (Green Arrow), Hal Jordan (Green Lantern) and Barry Allen (the Flash). All of them have since come back from the dead.
This panel◊ from Justice League America #33. At the time, it was meant as a dig at Barbara Gordon's fate in The Killing Joke, but with the events of Countdown to Infinite Crisis (Max actually does shoot Blue Beetle in the head) it becomes hilariously prophetic. (Perhaps justified in that Booster was from the future. Was he trying to subtly warn his friend without disrupting the space-time continuum?)
In the 1970s Batman story "The Man Who Falls", which chronicles young Bruce Wayne's training to become Batman, Bruce meets with an FBI agent who says "we don't pull our piece much. We leave that to Efrem Zimbalist, Junior", in reference to the TV show F.B.I. which starred Efrem Zimbalist Jr. Efrem Zimbalist Jr would later be the voice actor for Alfred Pennyworth on Batman: The Animated Series.
Issue 3 of JLA: Year One (written in March 1998) has a moment that seems to be intended as an in-universe Funny Aneurysm Moment, due to being set in the past; The Flash (Barry Allen) and Green Lantern (Hal Jordan) have a heart-to-heart conversation about the life expectancies of superheroes, which ends with Hal assuring Barry that "I predict we'll both live to a ripe old age". At that point in continuity, both Hal and Barry were dead. However, these days that moment has reversed into Hilarious in Hindsight due to both having been brought back from the dead throughout the 2000's.
In the "World's Finest" where Robin (Tim Drake) and Superboy (Kon-El) first meet, Superboy wisecracks that even with the costume, he knew it wasn't one of the legendary Flying Graysons. Guess which Robin was made into a contemporary of Superboy in Young Justice cartoon?
Speaking of Tim and costumes, DC once released a book about Bruce Wayne's costume designs for him and his team (Knight Gallery). Tim's section 2 entries stating "yeah, cape-wings are stupid". Cue the New 52 reboot, and just guess what Tim is now wearing (and everyone is making fun of)...
In Messner-Loebs's run on The Flash, there were several references to T. O. Morrow being stricken with depression after seeing something unspecified and horrible in the future. 15-20 years of canon developments and potential things for a reader to dislike later...
Back when Two-Face was still known as Harvey Kent, the editors decided to give him a happy ending, and his face was restored by a doctor. And the doctor's name? Ekhart. In The Dark Knight, Aaron Eckhart would play Harvey Dent.
Some older comics contain fan letters from one Geoffrey Johns, who had suggestions like "What if Superboy's DNA was half Lex Luthor?" and "Could you do another story with [dead at the time] Professor Zoom?" He got responses like "Sorry, in the time since you sent your letter the other half's been revealed as Paul Westfield" and "Sorry, Professor Zoom's dead and we're cutting back on time travel stories." Then he grew up and made his dreams come true.
The second issue of Grant Morrison's Animal Man run has a scene where Buddy runs into a teenager in LA named "Jaime", who collects autographs from famous superheroes. When he opens up his autograph book to try to get Buddy to sign it, the first visible page reads, "To my good friend Jaime - The Blue Beetle". That issue came out about 18 years before a teenager named Jaime Reyes officially became the third Blue Beetle in Infinite Crisis.
In the Deathstroke the Terminator tie-in with the Titans $ellout $pecial, a toy company is producing a Deathstroke action figure set, including "Wintergreen: Friend from Down Under!" When one of the execs points out Wintergreen's British, they're told that Australia is cooler. In Arrow, not only is Wintergreen an Australian, so is Slade himself!
In the MAD parody of the 1966 Batman TV show, the villain who's been trying to kill Batman turns out to be Robin in disguise. Fast-forward 35 years to Frank Miller's The Dark Knight Strikes Again, where the maniac posing as the new The Joker, who's been taking out heroes left and right turns out to be...Dick Grayson.
In the Batman arc "Shaman", Batman ambushes a group of thugs in a drug deal and interrogates the last one, saying "So if you don't tell me every little thing I might want to know, you'll be going to jail in a baggie. Believe it." Anyone who watches anime will know why it's hilarious to have Batman say this.
Then-current Adventures of Superman writer Jerry Ordway would often say "Let's just kill 'im!" whenever the Superman writing team are stuck on ideas. When their proposed "Superman marries Lois Lane" story arc was temporarily shelved to avoid conflict with the Lois & Clark: The New Adventures of Superman TV series (which also planned to marry Superman and Lois in a future episode), Ordway, at the next meeting, said, "Let's just kill 'im!" The end result was The Death of Superman.
In Action Comics #270 (1960), Superman dreams he has travelled to the future, and Linda Lee works as a reporter in the Daily Planet. Linda never was a reporter in the comics, but in 2016 she became one in her Live-Action show.
Linda Danvers worked for San Francisco news station KSF-TV in the 1971-1972 period. Some years later a real life San Francisco TV station with call letters similar to the one in the Supergirl comics was started. The station is KTSF-TV, channel 26. It is an independent station broadcasting mostly in Chinese, serving the Chinese community there.
Image United is a Crisis Crossover designed to celebrate the history of Image Comics. Due to massive Schedule Slip, it's now fallen many months behind. One of the most infamous issues of early Image being its delays.
Judge Dredd: The Democracy Now 1990s story line had the quote "When some creep's holding a knife to your throat, who do you want to see riding up...me - or your elected representative? Think about it." Fast forward to 2009 and the elected Mayor of London Boris Johnson saved a woman from a mugging that he witnessed as he cycled home. Since Mayor Of London comes with no 24 hour bodyguards or police escort it seems elected representatives are a better choice than coppers.
Can be considered an inversion, Dr. Seuss's wartime political cartoon showing a man in the future telling his grandson about his days during WWII, which he apparently spent complaining about fuel shortages. This becomes much less ludicrous when you look at the date this is supposed to be taking place: 1973, when everybody talked about fuel shortages. If you didn't know this was written in 1943, there isn't much of a joke, since it is perfectly reasonable that the grandfather is recounting his past experiences with fuel shortages.
Don Rosa's 2002 Uncle Scrooge story "The Dream of a Lifetime" features the Beagle Boys using an invention stolen from Gyro Gearloose to sneak into Scrooge's dreams and learn the combination to his money bin's main vault. It also features a staggering amount of similarities to the lucid-dreaming mechanics, and some of the plot elements, of Inception.
In 1996 Marvel and DC made a crossover (Elseworlds) Batman & Captain America. No comment about the story itself, however epilogue has a very significant detail. Batman and Robin found frozen Cap, and save him. Then they reveal that Batman is now Dick Grayson former Robin (and Bruce retired now), and Robin is... Bruce Wayne Jr. son of the original Batman! Now where have i heard that one before?
The idea of Dick Grayson teaming up with Bruce Wayne's son was a reasonably common one in Silver Age "imaginary stories".
For the Grand Finale of his League of Extraordinary Gentlemen saga, Alan Moore wrote a scene involving a climactic face-off between a deranged Harry Potter and a Guardian AngelMary Poppins...about two or three months before anyone knew that the Opening Ceremony of the London Olympics would feature almost the same thing. Sure, it was Voldemort against a swarm of Mary Poppinses in the latter case, but the coincidence is still pretty astounding. Especially since the book finally hit the stands almost exactly a month before the London Olympics started.
The Star Wars comic compilation Star Wars Tales has a throwaway drawing in one of the stories of the Empire's sigil with Mickey Mouse ears on it. The gag became a lot funnier when Disney bought the rights to Star Wars in late 2012 and announced production of a new series of films.
This article, posted before the comic series was announced, showing fanart of the (humanized) Mane Six as pin-up superheroines, mentioning "Somewhere 'bad girl artist' J. Scott Campbell is smiling". Campbell did do a variant cover◊, with no Fanservice in sight!
In Diablo III, a unique unicorn monster found in Whimsyshire was named "Nightmarity". The name isn't used in the comic, but Rarity becomes the second Nightmare Moon.
Zombies appeared in a few issues and in Archie's Weird Mysteries. It's usually somewhat funny and not too serious. Family friendly, lovable Archie and zombies just doesn't mix... Until Afterlife with Archie and it's terrifying now.
One story has Mr. Weatherbee overhear Betty, Veronica, and Miss Grundy discussing a soap opera, in which a couple had to break up after discovering they were long-lost siblings. The Bee falsely assumes Archie and Veronica as the couple, then gets ridiculed for thinking Surprise Incest could occur in real life. Incest would later play a role in some Darker and EdgierArchie interpretations, with Riverdale in particular having Polly Cooper date Jason Blossom, bear his child, then discover they were distant cousins.
A Jughead Jones comic has Jughead's look-alike "casanova cousin", Nathan, date various women in Riverdale, causing onlookers to suspect Juggie of having a secret, romantic side. Eventually, Riverdale would give the role of Jughead to Cole Sprouse, previously best known for playing a Kidanova's identical twin brother in The Suite Life of Zack and Cody.
A issue of Simpsons Comics Presents Bart Simpson from 2006 had Bart wining a toy store shopping spree contest, but everyone started demanding Bart free toys. During the spree he picks up the Kid-Tastic Krusty-Bot he had been wanting but everyone else started chasing him because he did get them the toys they wanted. He ended up crashing into the toy store's My Pretty Expensive Pony dispaly causing him to have a shopping trolly full of rainbow ponies. Four years later A certain show would spark a certain fandom.
In the parody of The Incredible Hulk, David Banner explains◊, "My name is 'Bruce' in the Comic Book version! But the Producers felt it wasn't a masculine enough name for TV!" A voice coming from a television set next to him then announces, "And Jenner wins the Decathlon!! BRUCE is the WORLD'S GREATEST ATHLETE!" The panel added an additional level of irony in 2015 when Bruce Jenner announced that he was transgender and transitioning to female.
Al Jaffee was truly clairvoyant with his "Some MAD Devices For Safer Smoking" written in 1969. One idea, "The Smoke Simulator", was a cork-tipped Pyrex tube containing small amounts of water which would be inserted into a cigarette. Once the cigarette was lit, the cork at one end of the tube (edible, of course) popped out, and the water inside became steam. When inhaled, the steam would feel just like smoke. Sounds a wee bit like like E-Cigarettes, doesn't it?
One edition in 1982 tried to predict the future films in the Star Wars universe, and since Return of the Jedi hadn't been released yet, made numerous jokes about who was really whose parent, but they did get right the fact that Darth Vader is C3PO's "father". They eventually claim that Luke's father is actually the Force itself, a claim that actually describes Anakin's "father". It also claims that "Star Wars Saga - Part II" would start "sometime around the year 2014", one year away from the actual release date of the first movie in the Sequel Trilogy.
Yet, 2014 did see the reboot of the original Expanded Universe as well as the first works completely in the Disney Canon.