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Fanfic / There Was Once an Avenger from Krypton

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There Was Once an Avenger from Krypton is a Massive Multiplayer Crossover Fusion Fic series written by Darthkvzn and set in the backdrop of an Alternate Universe version of the Marvel Cinematic Universe. Can be found on the author's profile on FanFiction.Net or on Archive of Our Own.

The stories set in the series (in chronological order) are as follows:

  1. She Stole My Heart (and most of my valuables) (FF.Net version here) (Gravity Falls and The Owl House)
  2. The Girl Who Could Knock Out the Hulk (Supergirl (2015))
  3. Changing of the Guard (FF.Net version here) (Ben 10, Tales of Arcadia, and Bumblebee)
  4. To Rule Alone, to Build Together (FF.Net version here) (Miraculous Ladybug)
  5. A Cold Day in Erebus (FF.Net version here) (Percy Jackson and the Olympians)
  6. Close Encounters of the Gem Kind (FF.Net version here) (Voltron: Legendary Defender and Steven Universe)
  7. You and Me, and the Woman We Could Be (FF.Net version here) (Dragon Ball Super)
  8. Like a Puzzle Piece (FF.Net link here) (Gravity Falls and Infinity Train)

The series provides examples of:

  • Achilles' Heel: Powerful electric currents are one of Supergirl's, as while they can't kill her, they can certainly hurt and incapacitate her, as seen when Whiplash 2.0 uses her whips to electrocute the Kryptonian.
  • Adaptational Angst Upgrade:
    • Because it's implied that Kal-El didn't make it, Supergirl has more issues due to truly believing that she's the Last of Her Kind.
    • The Fantastic 4 are outcasts in the scientific community rather than respected and were forced into serving as criminals by Centipede.
    • Chloe suffers from PTSD due to her near death experience as well as repressing her sexuality.
    • Inverted with Kevin. He didn't grow up an orphan throughout his childhood and was raised by Max Tennyson.
  • Adaptational Attractiveness: Victor von Doom never suffered from the facial scarring he received in his backstory and is shown to be quite handsome.
  • Adaptational Badass:
    • Mysterio has access to actual illusion magic rather than special effects.
    • Hawkmoth can not only give people powers, but he can also mind control them as well.
    • Centipede in canon was just a project developed by HYDRA. In this universe, there a Nebulous Evil Organization and are pretty much The Illuminati.
    • Ms. Bustier is more proactive with her students and was also a Miraculous holder.
    • Chi Chi, rather than be a stay-at-home mother, is an instructor at Kame House.
    • Max Tennyson was the previous wielder of the Omnitrix in this series. While certainly a badass in canon, he never wielded the watch outside a What If? episode and was considered unstoppable with it.
    • Zig-zagged with Julie. She doesn't gain Ship, but she does gain StarForce training, a bionic arm, and showcases better unarmed combat skills.
  • Adaptational Heroism:
    • Verdona's reasons for leaving Earth and her family behind are far more noble here, as she sensed a looming threat on the horizon and left to face it to keep Earth safe.
    • Chloe in this verse is actively trying to atone for her bad behavior and doesn't suffer from Aesop Amnesia like she did canonically.
    • Raditz is a bounty hunter and has a stable relationship with his siblings compared to the canon Cain to Goku's Abel.
    • The Red Ribbon Army are re-imagined as a robotics company and not a terrorist organization.
  • Adaptational Jerkass: Ben and Gwen's parents were loving and caring in the main series. In this series, Ben's mother is a self-centered politician with his father enabling her, while Gwen's parents are overly controlling and can't even bother to remember their daughter's age. To really drive home how bad it is, Julie's parents used to be heavily controlling of their daughter. Meeting Gwen's parents gave them perspective on how they treated Julie and led to them becoming better parents because Gwen's folks were leagues worse than they were.
  • Adaptational Sexuality:
    • Kara in the series was straight and only ever had male love-interests. Here, she's pansexual and used to be in love with Lena Luthor.
    • Winn is stated to be gay in this verse.
    • Lena is a lesbian and is also an Armored Closet Gay.
    • Marinette in the show only ever showed interest in Adrian. Here, she's openly bisexual, though she still primarily crushes on Adrian.
    • Chloe was very much a Clingy Jealous Girl towards Adrian, but here she's an Armored Closet Gay and had a crush on Marinette.
    • Caline Bustier's sexuality is unknown in canon, but she had a previous relationship with a woman here.
    • Mabel was rather boy crazy in the past, but here, she also ends up dating Pacifica and openly flirts with Luz when they first meet.
    • Skye is bisexual here and spends a bit of time admiring Kara's figure.
  • Adaptational Species Change:
    • All the humans in DBZ are re-contextualized as Xandarians. Yamcha is implied to be partially Loboan.
    • Android 18 was originally a human before she became an android. Here, she was always an android.
  • Adaptational Superpower Change: Chloe as Queen Bee in canon had somewhat similar abilities to Ladybug and her Limit Break was a "Venom" sting that immobilized its victim. Here, she can fly, secrete a honey-like substance that can either heal people or trap opponents, and her Limit Break is a form of telepathic communication.
  • Adaptational Villainy:
    • The Fantastic 4 begin as criminals here, though they are doing so against their will.
    • Tetrax personally killed Azmuth. In the show, he was a heroic bounty hunter and hardly even qualified as an Anti-Villain at his worst.
  • Adaptational Wimp: The Saiyans and Z Fighters, while powerful in their own right, are much weaker in that none of them are planet-busters nor do they have the potential to become as such.
  • Adaptation Name Change: Stuart only ever went by Stuart in canon and it was implied to be his actual name. Here, it's just an alias he uses on Earth. His real name is Tiu'ars.
  • Adaptation Relationship Overhaul:
    • Ben and Gwen had mostly stable relationships with their parents in the show. In this continuity, they're on far more worse terms with their families and are much closer to their grandfather.
    • Kevin was practically adopted by Max and is considered to be family by Gwen and Ben.
    • Ben and Julie did date in canon, but here they apparently started crushing on each other in third grade where as they originally first met in their teens.
    • While in canon Marinette and Adrian are still in Will They or Won't They? territory, here they hook up at his birthday party. A conversation between Ladybug and Queen Bee also indicates that they learned of each other's secret identities prior to them getting together.
  • Age Lift: Part of the condensed timeline means that certain characters have their ages altered.
    • Jameson is shown to be much older when he debuted in the MCU. Here, he's the same age as he was in the original trilogy.
    • Peter Parker was less than ten years old when the Battle of New York happened. Here, he's fifteen and has been Spider-Man for the past six months.
    • Word of God states that Tony Stark was born in 1977 rather than 1970, making him seven years younger and around 35 during the Battle of New York.
    • Gohan and Trunk's are roughly similar in age while canonically there was a decade separating the two.
    • Doctor Strange's age is unknown in canon, though he doesn't seem any older than Tony Stark by the time they meet during Infinity War. Here, he was in his early to mid-fifties by the time of the Battle of New York.
  • Alien Blood: In the Saiyan creation myth, it's said that Oozaru's fur is gold because he bathed in the blood of his fellow gods, which was gold in color.
  • All-Powerful Bystander: According to Doctor Strange, despite the Ancient One's duty to protect the magical world as the Sorceress Supreme and the most powerful magic user alive, she wouldn't get involved unless the situation was truly dire, and sometimes she wouldn't even aid then. Now that he's Sorcerer Supreme, he's making it a point to avert this and be more proactive than she was.
  • Alternate Universe Fic: Well, that much is obvious given that it's a major Massive Multiplayer Crossover, but it extends a bit beyond that.
    • The MCU timeline is more condensed than it was canonically, with aspects like the events of certain films taking place either earlier or later than they originally did. For example, the events of Doctor Strange took place years ahead of time, so Stephen Strange is the new Sorcerer Supreme shortly before the events of The Avengers rather than years after the fact.
    • In this series, it's stated that the events of Fantastic Beasts and Where to Find Them led to the collapse of American magical society, as opposed to how Fantastic Beasts: The Crimes of Grindelwald showed it to still be intact.
  • Always Someone Better: Victor von Doom is implied to be this to Tony Stark. Tony has no issue stating that Victor is "the most intelligent man in the world", which means that he acknowledges him as his intellectual superior. Considering how egotistical Tony is about his intelligence, that speaks volumes.
  • Amicable Exes: Stan Pines and Eda Clawthorne aren't a couple anymore, but they do still get along well and have been trading goods with each other for years. Considering that she calls him "handsome" in a flirty tone when they meet again, she may also still be attracted to him too.
  • Anthropomorphic Personification: The Miraculous are expanded upon as each embodying something rather than just Tikki and Plag. The ladybug is creation, the cat is destruction, the butterfly is potential, and the bee is cooperation.
  • Anti-Villain: The Fantastic Four are this at the beginning. They're all fundamentally good people who are Trapped in Villainy by Centipede and forced to commit crimes or be killed.
  • Appropriated Appellation: Supergirl was a name Jameson called Kara in his newspapers as a condescending insult. After some thought, Kara decides to take it up as her superhero name.
  • Back from the Dead: People end up getting killed in Hawkmoth's many Akuma attacks. The only reason death never sticks is because Ladybug's powers reverse all the damage, including the deaths.
  • Brain Bleach: Ben finds himself wishing for some after Krabb mistakes Gwen for his mate, even after Ben clarifies that they're cousins.
  • Comic-Book Movies Don't Use Codenames: In the case of the Fantastic Four, they're never called that or by their comic hero names, though that's justified by the fact that they start as criminals on a leash and none of them are heroes yet.
  • Composite Character:
    • Spider-Man is mainly rooted in the MCU version of the character, but he has more elements of The Amazing Spider-Man Series such as his relationship with Gwen Stacy, the spider that gave him his powers coming from OsCorp, and his parents having worked for OsCorp.
    • This version of Gwen Stacy is stated to be a mix of her version from The Amazing duology and Spider-Man: Into the Spider-Verse.
    • Ben has the maturity and appearance of his Alien Force incarnation, but the Omnitrix design is that of the original series. The first ten aliens he receives are a mix of his original series aliens (Heatblast, Diamondhead, Rip Jaws, Upgrade, and XLR8) and the ones he first had in Alien Force (Goop, Big Chill).
    • Julie is a soccer player like Ben was in Alien Force.
  • Crossover Ship invoked:
    • Like a Puzzle Piece has Dipper Pines/Tulip Olsen.
    • She Stole My Heart (and most of my valuables) has Eda and Stan Pines, well, in the past anyway.
  • Curb-Stomp Battle:
    • The Avengers vs. the Centipede mercenaries isn't even a fair fight. With exception to the enhanced ones (Titanium Man and Whiplash 2.0), none of them give the Avengers any trouble, with Hawkeye, Widow, and Captain America easily taking out most of them and Kara dealing with a squad of armed thugs with more effort trying to get them to stop shooting due to the futility than actually fighting.
    • Reportedly, the Kree Empire has been on a one-sided losing streak against the Diamond Authority and have at best managed to limit their expansion. As Moonstone puts it, it's hard to compete when your enemies don't need to eat, sleep, breathe, or undergo a decade of training just to be effective.
    • Eda vs the Goblin horde is a one-sided affair where the goblins are easily wiped out.
    • Once Bixbite enters the picture, the fight against the Homeworld Gems and the Paladins of Voltron goes from them barely holding their own to a one-sided take down where Bixbite barely even tries.
  • Darkness Von Gothick Name: Victor von Doom. Kara even lampshades that with a name like that, he may as well change his name to "Evil McBadguy".
  • Death by Adaptation:
    • Azmuth was killed by Tetrax long ago before the start of the series, and the entire Galvan and Galvanic Mechamorph race are long since extinct.
    • Ben's Diamondhead transformation is confirmed to be the last Petrosapian in existence, meaning Tetrax is dead in this story.
    • Because Lena is an orphan, Lex and the rest of her family are long since dead.
    • Granted, he died in canon, but he came back because it's Dragon Ball and Death Is Cheap, but since that's not exactly the case here, Frieza is reportedly dead for good here since Captain Marvel killed him in the past.
  • Decomposite Character: Ivan Vanko/Whiplash's equipment gets used by a woman reminiscent of the version of Whiplash from The Avengers: Earth's Mightiest Heroes.
  • Disabled in the Adaptation:
    • Julie ends up losing her arm when she and Ben were confronted by Sixsix.
    • Bardock was paralyzed from the waist down prior to leaving Planet Vegeta.
  • Easily Thwarted Alien Invasion: Downplayed. Despite what the news claims and the fact that they won at the end of the day, the Avengers note that they just got extremely lucky in stopping the Chitauri and were close to failing.
  • Evil Cannot Comprehend Good: Yellow Diamond can't understand why someone would bother to create Voltron to defend the universe because in her eyes, creating it is a waste of Quintessence that she feels could be used for conquest.
  • Frontline General: As seen in the first chapter of Close Encounters of the Gem Kind, Yellow Diamond leads her troops from the front-lines. Pidge can't help but find this rather idiotic since it could result in a Decapitated Army scenario.
  • Fusion Fic: All the stories that encompass the series inhabit the same universe but take place in different locations at different points in time, with references and other aspects that connect them to the greater universe at large.
  • George Lucas Altered Version: The version of The Girl Who Could Knock Out The Hulk released on AO3 in early 2020 is an updated version of the one originally published on FF.Net in late 2017. Word of God also states that the updated version on AO3 is canon to the There Was Once an Avenger From Krypton universe while the original is no longer canon.
  • Good Is Not Soft: Captain America is a kindhearted man who does good for its own sake, but if you're ever on his bad side... well, Natasha put it best: There's a very good reason that 95% of his exploits against HYDRA in WWII are classified.
  • Has a Type: Dipper likes red-heads, given his past crush on Wendy and him later dating Tulip Olsen in this continuity.
  • Hero Does Public Service: After the Battle of New York, Iron Man and Captain America both provide relief and repair for the city either by helping civilians or cleaning up the tech and debris left behind by the Chitauri.
  • In Spite of a Nail: Apparently, whenever a bearer of the Omnitrix, be it Ben or someone else, transforms for the first time, it's always a Pyronite. Even in universes where the species just plain doesn't exist. Azmuth has no idea why.
  • It's Personal: Julie has a deep hatred for Sixsix after he cuts off her arm.
  • Just a Kid: How the Avengers see Spider-Man due to him being fifteen, which results in them having different mind-sets on him. Tony prefers to help him from afar since the idea of having an underage teen be a member of the Avengers doesn't sit well with him (he also notes that it would be controversial with the public) while Steve wants to bring him into the fold and help him with proper training and support since he'd need it more than any of the adult heroes.
  • Legacy Character:
    • Unlike the main series, Ben isn't the first wielder of the Omnitrix. His grandfather was the previous wielder and it had fifty one bearers prior to him.
    • Titanium Man serves as this to the Iron Monger, as his suit is an advanced version of the suit Obadiah used.
    • Ivan Vanko/Whiplash is succeeded by a female mercenary that gets dubbed Whiplash 2.0.
  • The Multiverse: Characters like the Azmuth AI and Ford hint at the existence of a greater collective of universes beyond the current one.
  • Mythology Gag: Titanium Man using a Tesseract-powered Unibeam to incapacitate Supergirl caused her costume to suffer from Clothing Damage that resulted in her stomach being exposed and causing it to resemble her Post-Crisis outfit.
  • Nebulous Evil Organization: In MCU canon, Project Centipede was a subset of HYDRA. Here, it's a coalition of various factions pooling resources in a competition to see who can Take Over the World first.
  • Not-So-Well-Intentioned Extremist: Doctor Doom claims that everything he's done — from working with Centipede to dragging Kara out of the DCU into the MCU — is to make Earth strong enough to fight off a great threat he's foreseen. Kara calls him out on his bullshit, saying that he's just playing God, and getting him to admit that he expects the world to make him ruler out of gratitude.
  • Official Couple: Many of these are given by the tags for the stories when they aren't made clear in the fics themselves.
    • Tony Stark and Pepper Potts.
    • Percy Jackson and Annabeth Chase. They even live together in an apartment in Midtown.
    • Nico di Angelo and Will Solace are shown to be one.
    • Dipper and Tulip become a couple in their college years.
    • Marinette and Adrien become one during his birthday party.
  • Offscreen Moment of Awesome:
    • According to what Stuart tells Ben and Kevin, Vilgax once fought Thanos and survived. Which, given what Thanos is capable of even without the Infinity Stones, is saying something.
    • Piccolo offhandedly refers to Captain Marvel as "Frieza's executioner", suggesting Carol fought and killed Frieza at one point. Later confirmed by Bardock that she did indeed kill Frieza.
  • Person of Mass Destruction: The Celestials were this on a cosmic scale. When Azmuth brings them up, he mentions that they left ruined solar systems in their wake.
  • Politically Incorrect Hero: Averted. Kara comments that it's rather shocking how open-minded Captain America is about her sexuality since he grew up in the 1940s, where such a pro-LGBT mindset was practically non-existent.
  • Politically Incorrect Villain: Not exactly "villain" per say, but Jameson is notoriously homophobic and xenophobic, insulting Supergirl in his papers as an "illegal alien" and raising Lena in conservative values that resulted in her being Armored Closet Gay. He also believes strongly in gender roles, as he reportedly raved and ranted when Pepper was named CEO of Stark Industries.
  • Proud Warrior Race Guy:
    • Bardock, due to his Saiyan mentality, expresses frustration that Captain Marvel saved them from Frieza, believing that they should have solved the problem themselves.
    • Vegeta is rather annoyed by how the Saiyans have gone from fighting purely for the sake of being conquerors to only being mercenaries.
  • Recursive Fanfiction: In regards to Moonstone, who isn't the author's OC, but one made by Artifiziell. The same applies to the fusion between her and a Ruby, Bixbite, as well.
  • Related in the Adaptation:
    • Broly is Kale's older brother in this series.
    • Caulifla in this series is the younger sister of Goku and Raditz.
  • Secret Identity: Played with throughout the series.
    • Contrasting the series, Supergirl averts this due to using her powers in her civilian identity in full-view of the public.
    • Unlike the show, Chloe actually tries to maintain her secret identity whenever possible. However, as Ms. Bustier finding out, her having to reveal herself to both Marinette and Adrian, and Juleka suspecting her shows, she's really bad at it.
  • Ship Tease: After a Suggestive Collision, Lance compliments Pidge on her eyes, something she clearly enjoys.
  • Shout-Out: The title of Close Encounters of the Gem Kind is a reference to the film, Close Encounters of the Third Kind.
  • Sickeningly Sweethearts: Ben and Julie tend to act like this from time-to-time, something Kevin exasperatedly lampshades.
    Kevin: Ugh, just look at you two. You look like you're married. Like, with kids.
  • Smarter Than You Look: According to Banner, due to sharing the same brain, the Hulk is actually just as intelligent as Banner himself, it's just that he doesn't care for anything that doesn't involve fighting or punching things.
  • Spared By Adaptation: The entire Saiyan race was never wiped out by Frieza, so King Vegeta, Bardock, Gine, and the rest are still alive.
  • Stepford Smiler: Pidge notes that Carina's smile is incredibly forced, showing how much she hates being the Collector's slave.
  • Sufficiently Advanced Aliens: Various alien races, such as Gems, Galra, Kree, and Asgardians, all fit this in one way or another due to hyper-advanced technology. Pidge calls Gem tech the most advanced she's ever encountered (and she works with Altean magitek) while Moonstone states that the Kree were already working with industrial machinery by the time humanity was just starting to form stationary civilizations.
  • Take Up My Sword: Discussed. Ladybug asks Queen Bee to take her Miraculous and become the new Ladybug in the event that she falls against Hawkmoth.
  • Time Abyss:
    • The Collector claims that he's been alive since the dawn of creation, which would make him several billion years old at the youngest.
    • The Omnitrix itself is somewhere in the ballpark of 100,000 years or less, having been created at a time when the Celestials still roamed the universe and the Asgardians were still in their early warmongering days.
    • Moonstone states that she stopped keeping track of how old she is after she turned 10,000 and she at most assumes that she's 12,000. Pidge even states that she's older than human architecture. This naturally applies to the Diamonds as well since they're all much older than she is and one of the normal colonization methods they use amounts to "wait until the planet's species goes extinct".
  • True Companions: The Fantastic Four are this even before they were forced into a life of crime. They look out for each other and show concern when the other gets hurt. Ben even offers to take the fall for the whole team so the rest don't go to prison, but they refuse to let him suffer alone.
  • Uncanny Valley: Discussed In-Universe regarding Victor Von Doom. It's shown that he's a handsome young man, but Sue states that looking at him, there's just something fundamentally wrong with him.
  • Unskilled, but Strong: Clint and Natasha both call out Supergirl's fighting style as very poor and too reliant on her strength.
  • The 'Verse: The stories, while never truly intersecting, all inhabit the same universe and have different references and nods to each other.
  • War God: The Saiyans have one known as Oozaru, who is a giant golden-furred ape.
  • Weak, but Skilled: Word of God states that Thor is this among the physically strongest members of the Avengers. While he is strong enough to physically trade blows and keep pace with Hulk and Supergirl, he is still weaker than them in this regard. This is balanced out by his varied electrical abilities through Mjölnir, his natural magic, and centuries of experience and combat mastery.
  • Weirdness Censor: Adrien notes that the rest of the world doesn't even seem to notice that Paris is attacked by supervillains on a regular basis.
  • The Worf Effect: Showing that she can be overwhelmed, Supergirl gets knocked out by Titanium Man using a concentrated blast of the Tesseract's power.
  • World's Smartest Man: Tony regards Victor von Doom as this. Considering Tony Stark's the one saying it, that should say quiet a bit.
  • World's Strongest Woman: Supergirl is considered and referred to as this. As far as the Avengers go, she's stronger than Thor, but weaker than a fully enraged Hulk (though she starts out stronger than base Hulk).
  • Write What You Know: In-Universe example. Tulip changed her game based off her experiences in the train. So it went from a knockoff of Space Invaders to a point-and-click CYOA game exploring an infinite space station.


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