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Fanfic Recs / Ben 10

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Proof that the remaining 10% is worth being sent to the null void for here:

These are recommendations made by tropers for Ben 10 fanfics, all of which have to be signed to stay on the page. After a few samples, you will be able to note the interests of the tropers recommending them, and judge whether you might be also interested in a certain 'fic.

Feel free to add a fanfic of your own to the list, but remember to use the template found herenote . Do warn when a fanfic may head into sexualnote  or non-canon territory. Some people just don't like it, and as we all know, Shipping is Serious Business.

Reviews of fics are encouraged, but if you choose to write one, please make it substantive, and give specific details about what you liked / disliked in the fic. If you want to give a fic a thumbs-up without writing a full review, you can add your troper handle to the Recommendations Line. Please refrain from posting "Comments" or Conversation in the Main Page though; that goes in the discussion page.

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    Authors and Sites 
KitsuneMaxwell
  • Recommended by Ninja Naco
  • Pairings: Ben/Gwen primarily. Also creator of the "KevLie" (Kevin/Julie) 'ship.
  • One of the more well-known Bwen writers out there. Well-written and nothing out-of-character. Also has FFnet, dA and YouTube accounts.

Kapaychan

  • Reccommended by Tropers/jenicaaladima
  • Pairings: Big Ben/Julie fan. Also likes Mutant!Gwevin and Julie/Albedo.
  • This girl is wonderful. She's a great character analyst, her art and stories have backstories that make sense with the characters...brilliant. She has an ff.net account.

Chyme for the Rhyme

  • Recommended by This Is Ridiculous
  • Pairings: Ben/Rook
  • Chyme also has an ao3 account. Chyme's fics are so well written, it's like reading a cancelled script for Omniverse, and Chyme skillfully intergrates canon into their stories.

    General Fics 
Stories focused on the family and the friendly relationships of the cast. Plot-focused stories or light day-in-the-life stories. Pretty much anything that isn't focused on romance.

Parentheses: AntiFluff Drabbles by Karkadinn

  • Recommended by: blurrylightning
  • Status: Complete
  • Synopsis: An exploration of the distinct lack of romance between two cousins, and the resulting psychological fallout. Sometimes secrets are the only things we have left to define ourselves with.
  • Comments: Despite the synopsis, there isn't any actual romance between Ben and Gwen in the story. Short stories told from Gwen's perspective, sometimes deconstructs certain aspects of the show, such as Ben's Chronic Hero Syndrome or Max as a Cool Old Guy. Some of the stories try to tackle themes that don't fit the series, but besides that, it expands on most of the subjects the original series haven't really touched.
  • Note: This fanfic was written before Ben 10: Alien Force aired, Kevin's Heel-Face Turn never happened in this fic.
  • Has a page, but still a work in progress.
Add Review

Emergency by razzamatazz73

  • Recommended by: lackaDAISYcal
  • Status: Complete
  • Synopsis: Gwen needs both of them - she needs Ben to depend on her, and Kevin to make sure she's okay. And at the thought of losing Ben, she's not quite sure what she needs. Alien Force Hurt!Ben and Angsty!Gwen.
  • Comments: Short, well-written story about Ben and Gwen's relationship (in family terms, no incest) after Ben gets hurt. There's a slight amount of Gwevin in the background, but I'm putting this in Gen fics because it's not the focus of the story. Really nice interpretation of Gwen's character, as most authors don't go into depth with her that often. There's also some very precious Kevin quotes, and everyone's very in character.
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Reunited by AngelsXAmongXUs

  • Recommended by: The Otaku Ninja
  • Status: Complete
  • Synopsis: Set after Darkstar Rising—Kevin tells his mom. Rtd K for once...good job on being child-friendly this time around, Kevin...
  • Comments: A one-shot story that fills in some of the blanks that Ben 10: Alien Force never bothered to explain. Set after the episode "Darkstar Rising", we see Kevin reuniting with his estranged mother, while getting a glimpse into his past, including how his dad was a Plumber, hence his abilities, which also "evolved" over time from being able to absorb energy to being able to copy matter. And as someone who has become very disappointed in the series, this is a nice change of pace, as it delves a little deeper into what was never really elaborated on.
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Rewind by Karkadinn

  • Recommended by: Anvildude (aka Earthenfist)
  • Status: Complete
  • Synopsis: Charmcaster has finally found a way to end the Tennysons once and for all... or so she thinks, when she sacrifices her magic to create a tape that allows her to 'Rewind' time. But Time Magic is a powerful and dangerous thing to use, especially if you're not an experienced mage...
  • Comments: Kept me up all night reading, and honestly, is probably THE BEST Ben 10 fanfiction I've ever read. A bit of a warning, though: the themes that Karkadinn explores are very, very dark, and there's more than a little bit of graphic violence, with Alternative Character Interpretation all around, but all in all, it's probably the best example of character exploration that I've ever seen.
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And Then There Were Dorks by benzarro-smash

  • Recommended by: Dark Automaton II
  • Status: Dormant
  • Synopsis: An Evil Ben Family Story.
  • Comments: The link is to the third chapter since the previous two don't have links to either of the other chapters. Mostly revolves around the interactions between the Evil Bens and Eon. The characterization is spot-on and interesting, with plenty of Alternative Character Interpretation. Though, be warned, Mad Ben and Bad Ben have got quite the mouths on them in this.
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Eyes of Shadows by Rookblonkorules

  • Recommended by: ThisIsRidiculous
  • Status: Dead (last updated May 2017)
  • Synopsis: When you're a superhero, you tend to get a lot of bad guys out for revenge, but what happens when you're not the one they're after? Written for Purplehood.
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The Myles Bots byconspiringcolor@gmail.com

  • Recommended by: Conspiring Colors
  • Status: Dormant; last updated April 2018
  • Sypnosis: Max Tennyson (as Overflow) has a main character role in the fanfic.
Add Review

The Frost Queen by Kenya Starlight

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: To most of the rest of the universe, Ben Tennyson, wielder of the Omnitrix, is a hero. To a young Necrofriggian hatchling, however, he's something far more... he's a mother.
Add Review

Egypt on Anur Khufos by Machiner6

  • Recommended by: Sark0Tag
  • Status: Complete
  • Synopsis: The planet Anur Khufos is dying from a strange disease, and the only hope its people have rests on "the being of a thousand beings". And when Ben Tennyson and his family crash-land in Egypt just after saving the world yet again, things only get weirder from there.
  • Comments: Has its own page.
Add Review

Thaw by Xparrot

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: Even the most powerful superheroes can't always make it by themselves. But that's what friends are for. Or, how Kevin Levin learned to relax and love snuggling.
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Watchless by verboseDescription

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: You're Ben Tennyson. Normal high school kid. But maybe, that's about to change.
A story about the Ben without a watch, and what he does after meeting the other bens
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Extra Ordinary by Karkalicious769

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: In the most ordinary world imaginable, the Ben without an Omnitrix struggles to be something more.
Add Review

Home Is Where the Smoothies Are by Silybum

  • Recommended by: ThisIsRidiculous
  • Status: Dormant; last updated April 2020
  • Synopsis: Between roads not taken and posibilities not shown, it's important to know how to find your way back home.
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Language by Kariachi

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: An off-hand comment leads the Tennysons to a crash course in interspecies relations and ongoing prejudices.
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The Forgotten One by ilovelegendsalot

  • Recommended by: Storygirl 000, ThisIsRidiculous
  • Status: Complete
  • Synopsis: Ken Tennyson loves his younger sister and cousin. They've been ignoring him lately though...
  • Comments: Remember Ken Tennyson, Gwen's older brother who only ever appeared in one episode and was never mentioned again? Not only does this fic give a reasonable explanation for his absence, it's going to make you wish that the writers had actually used him again. Highly recommended.
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With Great Power by n00dl3Gal

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: ...should come great responsibility, but Ben has never been the most responsible. And when the power is as great as this, well, who can resist?
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Diamonds Are Forever by MissNihilist

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: A year after Petropia’s recreation, Ben and Rook are assigned a deceivingly simple job the planet — overseeing an "official yearly Plumber check" to ensure that societal development and reassimilation with the galaxy is going smoothly. With Tetrax acting as their guide, it soon becomes clear that not all is as it seems. Digging through conspiracies and figuring out who can be trusted, they find that the glittering surface of the planet is covering a horrible conspiracy against the Petrosapiens, which may hide roots closer to home than any of them realized.
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Tabula Rasa by Akino Ame

  • Recommended by: Lyra Dhani
  • Status: Complete
  • Synopsis: AF Season 3. Ben is discovered with amnesia, and Max, Gwen, and Kevin must figure out what happened to him. Meanwhile Ben tries to analyze himself and his relationships with everyone and figure out why he feels like he's missing part of the story.
Add Review

An Unlikely Top Tennyson by Saint Heartwing

  • Recommended by: cyclonerachel
  • Status: Complete
  • Synopsis: The Omnitrix, a device that can turn you into any alien you'd desire, and it's rightful owner is Ben Tennyson. But in one and only one dimension, Ben never got it. Even so, he's a true hero, joining the intergalactic peacekeepers known as the Plumbers. Whilst on a trip to Galvan Prime though, he'll find a challenge waiting that he never expected! A challenge named MALWARE...
  • Comments: A fascinating take on Malware in the No-Watch universe, and how he and that version of Ben would meet.

Regrets by Cybra-Sensei

  • Recommended by: cyclonerachel
  • Status: Complete
  • Synopsis: Inspired by this post that I found by chance. I figured that Malware and Azmuth’s twisted relationship needed more.
  • Comments: This person writes Azmuth really well, and her exploration into his thoughts and how he feels about Malware's situation post-Malgax Attacks is especially interesting.

The Freed Spirit of Gwen Tennyson by Madman777

  • Recommended by: Shadao
  • Status: Hiatus
  • Synopsis: It's not easy being Gwen, especially when you have Anodite heritage. For years, Gwen has turned down her grandmother Verdona's offer to go to Anodyne, insisting to remain on Earth as a human, albeit a human with an extraordinary life. But after a series of tragic events concerning her family and loved ones, Gwen retreats to the moon of Saturn to grieve and comes to terms with the fact that she is an Anodite, and the spark within her is begging to be freed from her human shell.
  • Comments: This story fully realizes Gwen's Anodite heritage and how it would have an effect on her beyond just being an explanation for her magical powers. It uses nearly all of the original continuity's episodes dealing with Anodites and creates a timeline of how Gwen has slowly accepted her Anodite self, which leads to the story's scenario where she finally accepts Verdona's offer. There's also another fic by the same author that serves as a side story in the same universe, giving us a glimpse of Anodite Gwen in the far future through Professor Paradox's POV.

    Shipping Fics 
Stories focused on the romantic relationships between the cast.

Alone With You

  • Recommended by: Random Chaos
  • Vanished from the internet. Please post a link if found.
  • Synopsis: Alien Force - Ben and Gwen both end up stranded together on Island in the Caribbean. Now it's up to them to find a way off and survive the wilderness. As they spend so much time together they find out that being so close to each other may be not be so bad.
  • Pairings: Ben/Gwen
Add Review

A Day to Wait

  • Recommended by: Random Chaos
  • Vanished from the internet. Please post a link if found.
  • Synopsis: Ben and Gwen go to the doctor for their annual checkup, but it is discovered that Gwen is suffering from a fatal disease.
  • Parings: Ben/Gwen
Add Review

The Little Moments Classic series by shadows59

  • Has a tropes page.
  • Recommended by: knife23
  • Status: Complete
  • Pairings: Ben/Gwen
  • Synopsis:
    • Little Moments Classic: Summer's over, but the adventure isn't. (Complete)
    • Comments: While most fics generally try to jump into the fluffiness that is Bwen, the author here takes his time with the two, building them up chapter by chapter from the constantly fighting cousins we love and remember to two people in a more mature relationship. The character development is gradual. Not forced and not rushed. And by the time they kiss, the whole thing feels natural. (Complete.)

    • Breaking Point Classic: Sequel to Little Moments. They should be done. Vilgax is dead and the Watch is off. The only thing that Ben and Gwen should have to worry about is their growing relationship, but the world always needs heroes.(Complete)
    • Comments: The sequel to Little Moments! Expect the same style and level of detail and intimacy. Additionally, it shares a trope page with Little Moments. (Incomplete. Going to be rewritten.)

    • Little Moment: As Old As You Feel by Erico: After Vilgax's attack on Phoenix in June of 2000, a traumatized Ben 10 journeys to Azmuth to have the watch removed at long last. While Ben and Gwen share their first and last alien sunset, their grandfather and the genius behind the Omnitrix have a moment of their own to reflect. And feel their age. A small companion piece to Little Moments, written with Shadows59's blessing. (Complete)
Add Review

The Little Moments Rebooted Universe.

  • Recommended by: realmofshadows
  • Notes: In 2019 the original writer and his co-writer relaunched Little Moments with expanded content. It has since grown into its own universe with the following stories:
    • Little Moment: Stone in the River by Erico
    • Status: Complete
    • Pairings: Ben/Gwen, Ben/Kai
    • Synopsis: Ben 10,000 is the hero of the world and Gwendolyn Tennyson is almost as famous as a mage and a scholar, but she can't shake the feeling that her life has gone wrong. But when she stumbles on everything she needs for a second chance in Africa, will she be brave enough to challenge the river of time? A companion piece to Shadows 59's Breaking Point.
    • Little Moment: Kiss Me Goodbye by Erico
    • Status: Complete
    • Pairings: Ben/Gwen, Ben/Kai
    • Synopsis: Gwendolyn watched their ten-year-old selves disappear back in time and waited for the world to change. And waited. And waited. Now she must pay the price for challenging destiny. The sequel to Stone In The River.
    • Little Moments Rebooted by shadows59 and Erico
    • Status: Complete
    • Pairings: Ben/Gwen
    • Synopsis: Summer's over, but the adventure isn't. Rewritten with expanded content
    • Little Moment: Rumble In The Jungle by Erico
    • Status: Complete
    • Pairings: Max/Xylene, Max/Verdona
    • Synopsis: In the Summer of 1965, Captain Max Tennyson is the pride of the USAF's 563rd Tactical Fighter Squadron, with a future in NASA and a moonshot waiting for him back in the States. But all of that seems a world away after being shot down over the jungles of North Vietnam, hostile aliens at his tail and one at his side. (Complete)
    • Little Moment: The Sorceress And The Knight by Erico
    • Status: Complete
    • Pairings: Bezel/Knight
    • Synopsis:Before Ben 10, before the Plumbers, before history itself, the Earth was guarded by Knights from a city called Atlantis. This is the story of the last of that noble line, a man who was sworn to the only daughter of the Mage King, Bezel, and how they changed the world... (Complete)
    • They Mostly Come Out at Night by Erico.
    • Status: Complete
    • Pairings: Ben/Gwen
    • Synopsis: The best part about working for Mr. Smoothies was that nothing happened. That's doubly true for the graveyard shift until it isn't. Until tonight, when a huge red alien with four arms in a white striped T-Shirt walks up wanting a drink. Some days it just doesn't pay to get out of bed. (Complete)
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A cat, but smaller. by Anniss

  • Recommended by: ThisIsRidiculous
  • Status: Complete, with a sequel, and interquel!
  • Synopsis: Rook wakes Ben up at noon to text him about kittens he has found. Ben doesn't seem to mind.
  • Pairing: Ben/Rook
Add Review

A Special Evening by Boneless Wingnut

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: Gwen and Kevin attempt to get close until Ben becomes annoying.
  • Pairing: Gwen/Kevin
Add Review

Spilled Smoothie by UltimateisUltimate

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: "Ben felt a click in his head, he inhaled, let out a soft 'oh'. Because something, 'something', had happened in that moment, something had changed between him and Rook, in that tiny, simple snippet of the day, and Ben didn’t know how to feel." Ben falls in love
  • Pairing: Ben/Rook
Add Review

Re-fittingthe Mould by Chyme forthe Rhyme

  • Recommended by: ThisIsRidiculous
  • Status: Dormant; last updated May 2019
  • Synopsis: Falling in love is in no way like losing a limb. Except, perhaps, for the fact that both of these things hurt. Which means that Ben - being Ben - must rapidly learn to multi-task.
  • Pairing: Ben/Rook
Add Review

Nothing ButPurple Inside by Chyme forthe Rhyme

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: Ben goes undercover on a mission, causing Rook to fall prey to some old fears. But little do either of them realise that it's going to turn out oh-so-much worse than they'd imagined. Bad enough even, to actually make cousin Sunny of all people, shut up about her new boyfriend.
  • Pairing: Ben/Rook
Add Review

A Matterof Loyalty by Annorah

  • Recommended by: ThisIsRidiculous
  • Status: Dead(last updated August 2017)
  • Synopsis: After almost two years in Rook's company, Ben could no longer picture his life without the Revonnahgander by his side. You all might imagine, he just wouldn't allow the best friend and partner he'd ever had to go on a long, dangerous solo-mission.
  • Pairing: Ben/Rook
  • Comments: English isn't the author's first language, so there are a lot of spelling mistakes, but she's perfectly happy to fix any errors you spot as long as you are polite about it. She also loves constructive criticism and feedback. Fair warning, this is one intense fanfic. The two heroes rush to Revonnah because of a social movement that just turned violent.
Add Review

Elevator Monolauge by RenkonNairu

  • Recommended by: ThisIsRidiculous
  • Status: Dormant; last updated March 2020
  • Synopsis: A take on what happened after the series, combining all show headcannons.
  • Pairing: Gwen/Kevin, eventual Ben/Rook
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Eleven Steps Forward, Two Steps Back by The Otaku'Hazel Eyes

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: In the hours following Maltruant's attack on Plumber HQ, Gwendolyn can't help but wonder what possessed Kevin to fight as he did against Exoskull. When she confronts him about it, both parties realize just how much an insanity-driven past still haunts the present.
  • Pairing: Gwen/Kevin
Add Review

The Imperial Knee by Barkour

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: In the aftermath of "Many Happy Returns," Kevin and Gwen have a chat about honesty, appropriate things to do in cars, and where to go for the rest of spring break.
  • Pairing: Gwen/Kevin
Add Review

Weaker ThanStarlight by Chyme forthe Rhyme

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: Mana energy of Gwen Tennyson, meet black hole, Kevin Levin. And again and again, for the rest of your lives.
  • Pairing: Gwen/Kevin
Add Review

Who's ScaredNow? by Karkalicious769

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: What starts as nothing but a fight gone wrong quickly spirals out of control. Ben heals from his unfortunate injuries well-enough, but when he returns to hero work, he's greeted by the public's newfound hostility towards Rook, his Omnitrix, and aliens everywhere. As the populous begins to turn on aliens, Ben finds himself juggling politics, a deeply-laid plan to rid the planet of aliens for good, dark thoughts he's always been content to ignore, and a rapidly-developing crush on his partner that he wishes would go away. It's a good thing that Ben knows how to multitask.
  • Pairing: Ben/Rook
  • Comments: I am a sucker for fics about politics and intrigue, and this fic has it by the boatload!
Add Review

Furries & Smoothies by RenkonNairu

  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Synopsis: Kevin starts a rumor that Ben's a furry. Then screams for 15 minutes when Ben and Rook hook up.
  • Pairing: Ben/Rook
  • Comments: The premise of the story is kind of silly, but if aliens are anything like humans, I could actually see this happening. Plus, I love fics that play with a concept, even if the concept in question is furries. Jam-art's art is exceptional as always!
Add Review

Arrested for Attempted Romance by Silybum

  • Recommended by: ThisIsRidiculous
  • Status: Dead; last updated July 2019
  • Synopsis: Here's the thing: heroes have it so easy in stories—go there, slay that, save this person, ride into the sunset. Eventually, Ben figures that, like everything else, the world at large has lied to him about this. (Or, Ben catches feelings and sometimes they're contagious.)
  • Pairing: Ben/Rook, Ben/Kai, Gwen/Kevin
  • Comments: I love how Kai is portrayed here!
Add Review

After the Dawn by csgt

  • Recommended by realmofshadows
  • Pairings: BWEN (Ben/Gwen).
  • Synopsis: Sometimes, being a hero means saving the universe. Sometimes it means raising your friend's baby even when your boyfriend and your parents think that its too much for an 18 year-old-girl. After a tragedy, Gwen learns just what she's made of as she tries the impossible, but does she really have to do it alone?
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Watch Boy & Lucky Girl by csgt

  • Recommended by realmofshadows
  • Status: Dormant
  • Pairings: BWEN (Ben/Gwen).
  • Synopsis:
    • Watch Boy & Lucky Girl: The strangest thing in Ben's life should have been the Watch that he found, but it isn't. No, Ben finds out just how close to home weird really is as he fights off evil from Earth and space. Complete
    • Watch Boy & Lucky Girl v2: When the world is threatened by a whole army of Ghostfreaks, can Ben and Gwen really trust the original when he offers to help? And is the real threat to the couple's happiness closer to home? Dormant; last updated January 2019.
Add Review

Reminder by Nate-Mihael.

  • Recommended by realmofshadows
  • Status: Ongoing
  • Pairings: BWEN (Ben/Gwen).
  • Synopsis: Grandpa Max thought that things were getting better as he watched Ben and Gwen get closer after they got back from space. He didn't hear the nightmares. Set after 'Secrets of the Omnitrix'.
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Dancing Alone by Nate-Mihael.

  • Recommended by: realmofshadows
  • Status: Ongoing
  • Pairings: BWEN (Ben/Gwen).
  • Synopsis: After time's hiccup Ben's stuck in a world where Gwen has the Omnitrix and she still hates him. But he learned to live with his Dweeb once, he was sure he could do it again. It's a whole new Hero Time! Time travel fic set after 'Gwen 10.'
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Another Anodite by The Blade of Osh-Tekk

  • Recommended by: realmofshadows
  • Status: Complete
  • Pairings: Bwen (Ben/Gwen)
  • Synopsis: Verdona never could take no for an answer, but it isn't Gwen that pays the price in this AU of What Are Little Girls Made Of?
Add Review

Courting Disaster by shadows59 and Erico

  • Recommended by: realmofshadows
  • Pairing: Ben/Gwen
  • Status: Ongoing
  • Synopsis: So many things depend on a single moment. In one world Ben and Gwen are separated when they're four and sent to different schools. In another, they aren't. In this world, that one change starts a chain reaction that can't be stopped. In this world, they're Ben and Gwen and everyone else can just deal.
  • Comments: A rather cute ongoing story starting when the kids are four and a half and their parents decide to send them both to the same private school instead of splitting them up and follows how their lives changed from there.
Add Review

    Crossover Fics 
Stories that blend one universe with another

The 10th Destiny by DoctorEd17

  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Stargate Universe
  • Status: Ongoing
  • Synopsis: During a routine trip through the Stargate. The Destiny crew finds a 12-year-old boy who's been on the planet for about 2 years. After a while, they take him with them. How will his presence affect the crew and the ship? How will they affect him? Why was even he on that planet to begin with?
  • Comments: it was explicitly stated that this is the Reboot version of the Ben 10 characters.
10 ton adventure by MrandMrsTemple
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Dumbo
  • Status: Completed
  • Synopsis: What if Ben had been there for Dumbo instead of Timothy Mouse?
Agent XI by ZombieQueen
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A Hero's Life Reboot by Feedbackblast18
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Totally Spies!
  • Status: Ongoing
  • Synopsis: During a battle with Vilgax, a freak weapon malfunction has duplicated and sent 11-year-old Ben Tennyson to another Earth, altogether. Now, not only does he have to get used to this new world, where he is found by 3 teen spy girls, but also figure out how to use the Omnitrix after it rebooted and back to 10 aliens again!
  • Comments: A clone of Ben ended up in Beverly Hills and, after helping Alex save her teammates, ended up adopted by her family.
A Hero's War by Pyroknight137
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: World of Warcraft
  • Status: Dead; last updated October 26th, 2016
  • Synopsis: A World filled with Strife and War is about to receive its last hope to avoid oblivion.
Ahsoka 13 by SpectreWyvern (FF.Net Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Star Wars
  • Status: Ongoing
  • Synopsis: Half a year into the Clone Wars, Ahsoka Tano has vanished off the face of Coruscant after a mission gone wrong. And after detecting strange energy readings coming from a less advanced city on Coruscant, several Jedi are sent off to investigate and... Is that Ahsoka's picture on a Billboard? And what's with the weird black watch!?
A League of My Own by JaredKnight2000
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Justice League
  • Status: Ongoing
  • Synopsis: Ben gains the powerful Omnitrix and aspires to join the ranks of the Justice League. But can he handle the challenges of being a true superhero?
Alien Force: Omnitrix Rising by Sonnie Celanna
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Ongoing
  • Synopsis: How do you stand up against an entire world, when even as a million faces you are just one person? That's a question Izuku Midoriya needs to answer, confronted with the dark side of the world he lives in. How did he find out about the dark side of this world, though? Well... It started when an alien device did what it did, and stuck itself upon his wrist with the secrets that it hid.
  • Everything is in balance. On one hand, All Might discover Omnitrix alongside Izuku, becoming his confidant early on. On the other hand, Yaoyorozu Momo is a vigilante, and discrimination against Mutant-type Quirks is more rampant than Canon, meaning Omnitrix forms come with prejudice in this setting.
The Alien Hero of Teyvat by TheDJwriter
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Genshin Impact
  • Status: Ongoing
  • Synopsis: Ben is transported to the world of Teyvat because he severely underestimated a technology that belonged to Dr. Psychobos. What sort of adventures would be in store for the extraterrestrial hero in this strange new world?
  • Comment: Ben is transported into Teyvat, near Mondstadt, and decides to help people nearby. the minor gripe is how the locals insist that Ben's transformation is a Spirit no matter how much he explains it. a possible Ben x Amber.
A Life Reboot by DoctorEd17
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Monsters vs. Aliens
  • Status: Dead; last updated February 4th, 2019
  • Synopsis: An unknown event duplicates Ben Tennyson and the duplicate is sent to the Monsters VS Aliens Universe. Not only does he have to get used to the new world but he also needs to figure out how to use the Omnitrix again after it rebooted and has only 10 aliens again!
  • Comments: While Copy!Ben is based on the original series, his Omnitrix contains aliens from the other versions, including Reboot's.
A Magical Worm (Anodite Taylor) by SuperiorFreak
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Worm
  • Status: Ongoing
  • Synopsis: Honestly, I didn't understand why everyone kept looking at me like I was the weird one. Alexandria clearly doesn't have that much muscle, yet no one bats an eye when she casually juggles tanks. But I say I use magic and suddenly I'm the odd duck?

    My powers were quite literally out of this world, what's their excuse?
And Then It Was Miraculous by ZFan100
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Miraculous Ladybug
  • Status: Completed
  • Synopsis: Ben and Gwen face off against Animo only for the fight to take a mysterious turn, taking them to another place. Someplace... Miraculous.
  • Comments: This is an alternate Ben where he uses "Spanner" for his hero name and an alternate Gwen where she didn't destroy the Charms. Things get difficult when the Parisian heroes mistake the Americans' as Akumatized people, but an Akumatized Animo does help them smooth things over.
A New Collar For The Dog by Anime0CC0Manga
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Medaka Box
  • Status: Ongoing
  • Synopsis: Ever thought of Zenkichi ending up with the Alien Watch instead?
An Osmosian Journey by Death Fury
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Star Wars
  • Status: Ongoing
  • Synopsis: When Ben 10 recreated the Universe, he accidentally left the real Kevin in a Void. Kevin met a ROB and entered the Star Wars Universe. Join Kevin Ethan Levin as he ventures into the Galaxy Far Far Away.
  • Comment: Kevin, armed with basic knowledge of Star Wars, ended up purchasing the Skywalkers and set them free as he tried to get out of Tatooine.
A Reflection by Wolfal_E_Hinsley
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Young Justice (2010)
  • Status: Ongoing
  • Synopsis: While chasing after Ben 10 with Eon, Albedo finds himself caught in an explosion that sends him and Ben flying across multiverses. Trapped together in a universe full of heroes, the look-alikes must set aside their differences and work together if they ever want to get home.
A Result of Consequence by BigPear
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Ongoing
  • Synopsis: That summer when Ben first found and used the Omnitrix was a simple one. Find bad guy, go hero, beat bad guy, get away, repeat. Ben was on top of the world; in a world full of quirks, he had the coolest one of all. However, every action has a reaction, and Ben's vigilantism has landed him in trouble. Now at UA, Ben must prove himself a hero, or suffer the consequences.
  • Comments: A bit annoying how MHA setting's culture really clashes with Ben's, but he proves his worth as the Plumber's greatest ally and friend to all aliens.
Avenging 10 by CaptainRex75.
1 Review
Ben 10 A Magical Mishap by UltimateHero10 / Arsenal10
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Winx Club
  • Status:
    • Original (By UltimateHero10) - Completed
    • Remake (By Arsenal10) - Complete
  • Synopsis: After escaping jail with the help of his niece, Hex plans to bring worlds both mortal and magical to his knees by obtaining the dragon flame. In attempt to stop him, ben follows the evil sorcerers through the dimensional portal. But this plan backfired as he is now stuck in gardenia. Home of it's keeper. Can ben handle having to share the hero spotlight while finding a way back?
  • Comments: Arsenal10’s version of the story in chapter 11 shows a different approach for the ending than UltimateHero10's version as The Statue Of The Seven Dragon is the Hands Of Armaggedon in disguise, Eon’s first appearance along with the Novatron’s first appearance', and Arsenal10’s version of Ben 10 A Magical Mishap story is connected to his Ultra Legion story.
Ben 10 and Star vs the forces of evil by VanguardLuard
Ben 10: Age of Marvels by I craft experiences
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Marvel Cinematic Universe
  • Status:
  • Synopsis:
    • Age of Marvels: In the prime of his life, Benjamin Kirby Tennyson has just been gifted a new Omnitrix by Azmuth and must find his place in a world where new heroes and threats are emerging.
    • Marvellous Moments: A series of one-shots focusing on the daily lives of Ben and the Avengers, with all the drama and misadventures that ensue. Also serves as a spinoff series based on the "Age of Marvels" Universe.
    • Winter's Secrets: Two years after the events of New York, a web of conspiracies reveals dark secrets between the Plumbers and SHIELD, and an old foe resurfaces... How will these new revelations change our heroes?
  • Comments: It's pretty telling about Ben's personality that Nick didn't really need Coulson's blood-smeared Captain America merch to motivate the Avengers.
Ben 10: A True Hero by MegaRdaniels
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: The Boys (2019)
  • Status: Ongoing
  • Synopsis: Ben Tennyson, now going by the alias of Ben 10,000, has been teleported to the world of corrupt superheroes, and must aid a resistance group to expose the lie to the public that a multinational corporation who owns these heroes mean more harm than good.
  • Comment: Pretty top-notch with the locals baffled with Ben 10.000's altruism. This is the Original Series!Ben 10.000, so expect Adaptational Seriousness.
Ben 10: In the World of Titans by Shinobi360
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Attack on Titan
  • Status: ongoing
  • Synopsis: He was supposed to return back home. After helping Rex Salazar to defeat Alpha, Ben manages to put him in the Null Void but instead of ending up in Bellwood,he ends up in an alternate reality where humanity is at the brink of extinction. Perhaps with his presence,they can forge a better future for themselves.
  • Comments: a good read. thanks to Ben, Eren did not get arrested and trialed by vouching for him.
Ben 10 Mass Effect Crossover by Parker_Fox
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Mass Effect
  • Status:
  • Synopsis: Ben Tennyson finds himself in the Mass Effect universe shortly before the start of the second game.
  • Comments: This has scratched the itch I have with Ben 10 being isekai'd to Mass Effect world, with the teen hero helping the Normandy team's moral compass stick harder on Paragon. While Omnitrix is nerfed by being a bit glitched after being temporarily modified by Skurd, it merely forced Ben to be more creative. One of this fic's flaws is that, unlike most Ben 10 fanfics, it still addresses Ben as Ben instead of his alien form's name after every transformation, while spending a paragraph on the transformation scene.
Ben 10: Mythalien or Percy Jackson and the Alien Hero by Mythalien
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Percy Jackson and the Olympians
  • Status: Ongoing
  • Synopsis: Just when Percy Jackson thinks life is calming down after the defeat of Gaea, he finds himself confronting a mad geneticist who's mutating sea life and has to work with a certain alien shapeshifter to take him down.
  • Comments: In this fic, Ben's identity is never publicly known because Hecate works The Mist overtime to cover it until Percy's unfortunate encounter with Dr. Animo ends up allowing him to track Percy back to the camp...
Ben 10 Persona 3 Enter the tower by Generalhyna
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Persona 3
  • Status: Dead; last updated March 11th, 2018
  • Synopsis: When Ben is chosen for a foreign exchange student program to Japan, he doesn't know that along with his cousins, he will face monsters called shadows and awaken his power as the Jester.
  • Comments: Ben is Minato's cousin. have a bit of typos all over.
Ben 10: Prime Force by Mana Mania Rider
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Transformers: Prime
  • Status: Ongoing
  • Synopsis: Ben, Gwen, & Kevin get sucked into another universe. While there they get mixed up in an eon long war between sentient, transforming machines from a strange mechanical planet. Will they join the Autobots and help them save the world from the Decepticons, MECH, and a long-time enemy of Ben's?
  • Pairing(s): Ben/Arcee
Ben 10: Quirks and Aliens, Finest Heroes by TubularWishes
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: My Hero Academia
  • Status: Ongoing
  • Synopsis: Ben 10's fame is recognized all across the world, second only to All Might himself, but after his Grandpa Max brings him to Japan for an "undercover mission," Ben learns that Max wants him to attend U.A. High School so he can learn how to work better with others—and gain a hero license. But no matter what comes his way in Japan, Ben is sure to overcome any trouble! It's Hero Time!
  • Comments: A Fusion Fic where Ben, a world-renown hero, joins class 1A post-Sport festival.
Ben 10: Rebel Alliance by Redakai12
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Star Wars Rebels
  • Status: Dead; last updated September 12th, 2015
  • Synopsis: After an accident with the Forever Knights, Ben finds himself in a strange new world. Will he and Rook help the rebels and find a way back home or meet their ends in this new world?
Ben 10: Reincario by omnimegalander (Ao3 Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Pokémon
  • Status: Ongoing
  • Synopsis: Nearly 15 years after sacrificing himself to save the Tree of Beginning from its untimely end, Lucario's destiny changes upon meeting a mysterious professor. Now on a brand new world with creatures of every shape and size, Lucario works alongside the hero of the universe, Ben Tennyson, to protect the innocent and fight against powerful villains, both old and new.
  • Comments: A very good read with some retcon fixing, with Lucario filling Gwen's part as the spellcaster of the group with his Aura — with martial art skills to boot.
  • Has a Trope page.
Ben 10 RWBY by The Omni-Remnant
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: RWBY, Generator Rex, The Secret Saturdays, Kamen Rider
  • Status:
  • Synopsis:
    • Dimension Twist: After an incident involving an old foe and a Null Void Portal, Ben and his team are transported to the world of Remnant... right in the middle of the Battle for Beacon. What will be the consequences? Ben doesn't know, but he does know one thing: It's Hero Time!
    • Ultimate Omniverse: Having returned from a massive adventure in the world of Remnant, Ben, Team RWBY, and the rest of their friends find themselves faced with new challenges at every turn on Earth. Be it villains old and new… or even things that they never imagined to be real. It's going to be a challenge unlike any they've seen before, but they're up for it. It's Hero Time!
  • Comments: not every day you got RWBY isekai fanfic that started mid-Battle for Beacon. the actions are fantastic, some characters get better character development, and really love seeing both the Earth's heroes and villains introduce the Remnant characters to Earth's media and cultures. some characters are retconned, like turning Thunderhog from a humanoid boar alien to a normal human and a friend to Human!Exo-Skull before Dr. Animo turned them into human/animal hybrid using Faunus DNA, and the crossover pairings are adorable.
Ben 10: Unlimited by The Incredible Muffin
  • Recommended by eruptor142
  • Status: Complete
  • Crossover with: Justice League
  • Synopsis: Ben Tennyson has lost everything. Now, in a new universe, he must decide: will he return to the role of hero?
  • Comments: This story was actually the inspiration for several other stories in the Fanfic Recs, like Avenging 10, Sandman Unlimited, and My Alien Academia, so it's very surprising that it hasn't been added until now. It also has two sequels that tie it into Young Justice, with one being completed while the other was, unfortunately, cancelled. Currently, the entire saga is being rewritten by chidoriprime. It also crosses over with the aforementioned Bleach: Ultimate Alien fanfic.
Ben-10: The One True Monster by Chris Chronos
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Naruto, Overwatch
  • Status: Ongoing
  • Synopsis: The young Benji Tenzaki is an unfortunate child who wasn't blessed with the talent to become a ninja. Upon death, he regained memories of his past life and chose to use the Omnitrix for the good of his people. This story follows Benji as he survives in the world of shinobi as one of them, disguising his abilities as the ninja techniques.
  • Comments: Benji Tenzaki is a reincarnation of Benjamin Tennyson who died betrayed and in agony, who then received the Omnitrix and used it to be a Shinobi, giving the transformation Japanese names. As for Overwatch, there is a team of Kusagakure Shinobi consisting of Kiriko Kamori and the Shimada brothers, Hanzo & Genji.
Bleach: Ultimate Alien by Bigby the Big Bad Wolf.
  • Recommended by: hencej18, VictorioMWolff-Haddock
  • Crossover with: Bleach
  • Status:
  • Synopsis: Ben Tennyson is whisked away to a place known as Huenco Mundo by Professor Paradox. There, he will make an impact, forging new allies and enemies. However, there is a really big reason on why he was sent there in the first place. . .
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The Book and the Watch by Bad Pun King
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Gravity Falls
  • Status: Dead; last updated October 23rd, 2022
  • Synopsis: Ever wonder how different Gravity Falls would've been if Ben and Gwen Tennyson had been sent to spend the summer there alongside Dipper and Mabel Pines? This is that story!
  • Comments: For an author's first work it's relatively good, even if its still lean on Gravity Falls more.
Break of Reality by MagnoliaTurtle
  • Recommended by: MoonlightSaltShaker
  • Status: Ongoing
  • Crossover with: Generator Rex
  • Synopsis: When Eon takes a special interest in Rex’s corner of the multiverse, he teams up with his inter-dimensional ally: the Great Ben Tennyson. With some help from an alternate version of Ben’s cousin armed with her own Omnitrix, these three are the last line of defense against cosmic destruction.
  • Comments: Still early on. Chapters are short but well-written and the author updates frequently. Crossposted to Fanfiction.net
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Chimera Rising by Ghost Angel14 (Sufficient Velocity Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Worm
  • Status: Ongoing
  • Synopsis: It's all just a game of cops and robbers. It's all in good fun. Everyone's careful not to break the rules and play nice with each other. But unfortunately, not everyone will follow the rules, some will go too far. And will refuse to be stopped. "You'll never beat me. Because you're one of the good guys. And good guys never have the guts to finish guys like me."
  • Comments: Kevin 11 appears in Brockton Bay, and he's smart enough to take proper advantage of each of his alien body parts against the locals...
Corrupt World by Celestial Watcher
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Akame ga Kill!
  • Status: Ongoing
  • Synopsis: Young Ben Tennyson finds himself falling into a universe that is overrun with corruption and evil. The laws of this land are kill or be killed, Ben's morals will be put to the test as this corrupt world throws everything it has at him.
  • Comments: Akame Ga Kill fics always forcefully try to make the other half of the crossover join the Night Raid immediately. Not this time, baby! While Ben sees The Empire as corrupt, he also sees the Night Raid as no better than them.
Devils & The Alien by Celestial Watcher
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: High School D×D
  • Status: Ongoing
  • Synopsis: Ben Tennyson, wielder of the Omnitrix and savior of the universe has to finish his last two years of high school at a place called Kuoh Academy in Japan. No one there knows who he is or that aliens exist, there also happens to be a group of Devils whose leader has taken an interest in Ben.
  • Comments: Not every day you get to see a protagonist actively avoids becoming a devil or join Rias' peerage in DxD crossover.
Dial by DesertChocolate (Spacebattle Link)
  • Recommended by: Mikeal 52
  • Status:
  • Crossover with: Marvel Cinematic Universe
  • Synopsis: One day, Mahmoud Schahed finds himself meeting a certain time-travelling professor, and is thrown into New York with a watch full of alien DNA. Even if he's wondering why some Marvel superheroes are portrayed as famous actors, he's not willing to just stand by and let the world go to ruin. As HYDRA rears its ugly heads and Captain America becomes a fugitive, the world will realize what time it is: Hero Time.
  • Tags: Self-Insert
  • Comments: There's a lot to enjoy about this fic: Dial's super smart forms schmoozing with geniuses like Tony Stark, an Upgraded War Machine fighting the Absorbing Man, Fourarms employing martial therapy against the Hulk, and the Avengers roster slowly expanding as SHIELD is transformed to match an increasingly weird world. Writing is solid, development is impressive, and there are plenty of amazing moments to behold.
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Emi 10 by SilverSoulmmc (Ao3 Link)
Family Business by Akino Ame
  • Recommended by ladyofthelibrary
  • Status: Complete
  • Crossover with: Jonny Quest: The Real Adventures
  • Synopsis: When Ben's cousin Jonny accidentally learns about the aliens, the reaction isn't quite what he'd expected. Maybe traveling the world and fighting weirdness runs in the family.
  • Comments: The idea of Ben and Gwen having a cousin who takes their adventures in stride but isn't an alien is absolutely hilarious and Jonny and his crew are perfectly in character.
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Fate Hero Time by JesterInFlames
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Fate/stay night
  • Status:
    • Original - Discontinued
    • Remake - Dead; last updated October 31st, 2021
  • Synopsis: After defeating Dagon and Vilgax, Plumbers sends Kevin to a mission. Meanwhile Max makes a deal with the mage association and sends Gwen and Ben to Fuyuki to investigate mysterious events. What they found was not what they expected.
Fate Stay Night: A Hero's Path by Seanathan311.
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Fate/stay night
  • Status:
  • Synopsis: When Ben Tennyson visits Fuyuki on a trip for some Extra credits and some downtime, instead he finds himself locked into a bloody battle for a Wish-Granting Grail. With no other choice, Ben shall use the power of the Ultimatrix and newfound allies to put an end to the battle and uncover the truth of the Holy Grail War of Fuyuki.
  • Comments: Due to the machinations of Professor Paradox and Moon Cells, Ben is sent to Fuyuki for extra credits, only to become the Eight master with a different Caster.
FateStay Night: Ultimate Master by Ten-Faced Paladin
  • Recommended by Kishou, Theokal3
  • Status: Dead; last updated October 2013
  • Crossover with: Fate/stay night
  • Synopsis: Set in the Ultimate Alien series (thus made a world famous hero) Ben undergoes a solo mission to investigate the happenings of Fuyuki City. After a battle with Lancer, he ends up partaking the Holy Grail War as the Master of the eighth servant, Avenger.
  • Comments: Sadly hasn't been updated since October 2013, but the (five) chapters it has now are really engaging and draw you in. The pacing flows very naturally and it is interesting to see Servants go toe-to-toe to many of Ben's forms... and who doesn't want to see Way Big squish Berserker like a bug?
  • Trope page can be found here
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Five Years Later by Kuro the Artist.
  • Recommended by: Vigilant Sycamore
  • Status: Ongoing
  • Crossover with: Danny Phantom, Invader Zim, Generator Rex
  • Tropes page here.
  • Synopsis: It's been five years since Danny Fenton, retired ghost-fighting superhero, revealed his identity to the world and saved it from destruction. When accidentally thrown into an alternate world in attempts to complete his father's work, a new cross-dimensional threat is revealed to him, and his old arch-nemesis, Vlad, is somehow connected. Now, he must "Go Ghost" again with the help of that universes' greatest hero, Ben 10, to defeat the threat before he can obtain his mysterious goal.
  • Comments: A great fic showing Ben and Danny five years after the finales of their respective franchises, Ben, in particular, being well on his way to becoming Ben 10,000. There's great fight scenes, great characterization, interesting new characters, abilities, and aliens, and the story itself is gripping. However, it is Darker and Edgier than the actual cartoons, with swearing and more realistic violence (blood), although it doesn't take away from the story and it's not just there for shock value.
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Forbidden Fruit by ZombieQueen
  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Crossover with: SCP Foundation
  • Synopsis: Intelligencer Mann is assigned to take out the Global Occult Coalition, and take it down from the inside. Will she rise, or will she fall?
1 Review
Galactic Shift Extend by Seanzilla1988
  • Recommended by faizguy
  • Status: Ongoing
  • Crossover with: BlazBlue and several other series
  • Synopsis: instead of ending up in the alternate tineline where Noel didn't exist, Makoto Nanaya instead ends up in Bellwood and saved by Ben Tennyson just before he meets Rook for the first time.
  • Comments: Found it one day and was instantly hooked. All the characters are in-character, many events have been altered, and there's even a second story that acts as a series of side stories that goes with this. While it starts off with just Ben 10 and BlazBlue, it's expanded to include many other series such as My Life as a Teenage Robot, Robotboy, Transformers Animated, Max Steel, and even Danganronpa.
  • Now has a tropes page. In DESPERATE need of wiki love, please.
Gus 12 by BlueKnight-X2 (Ao3 Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Various Western media, but mostly focused on The Owl House
  • Status: Ongoing
  • Synopsis: A watch-like device falls from space and attaches to Gus Dalton and gives him the power to transform into different aliens. Now he, Luz Noeda, Willow, and others must work together to stop criminals in their summer vacation.
  • Comments: The Owl House characters are reworked to fit more with Ben 10's world, such as Luz being part-Anodyte, Hooty being Galactic Technomorph, etc.
  • Has a Trope page.
Hanging Ten Saga by The Writer with No Name
  • Recommended by CMR Rosa, Storygirl000
  • Status: Cyber-Sweet Sixteen is dormant; the rest are completed.
  • Crossover with: Stōked
  • Synopsises:
    • Hanging Ten: As summer starts at Surfer's Paradise, a sixth grom joins, making friends with the groms, except for Lo, but as strange creatures start showing up, they begin to wonder: what is Ben Tennyson hiding? Gradual Ben/Lo, some ReefFin. AU Stoked S1, S2-3 B10:AF Complete
    • It Came From Room 1313: With a new girlfriend at Sunset Beach, things are looking up for Ben...but when one of his most fearsome foes returns, it's up to him and his new crew to stop this ghostly menace. Complete
    • Witchy Woman: After weeks of being friend-zoned by Emma, Johnny finally decides to move on, but this decision couldn't have come at a worse time...as a not-so-charming guest arrives at Surfer's Paradise, intent on settling an old score. Complete
    • My Cyber-Sweet Sixteen: With her sweet sixteen just around the corner, Lo is officially stoked about her upcoming birthday-bash. Struggling to keep up with preparing for his girlfriend's party, Ben isn't quite as thrilled, especially when an old acquaintance drops by...with her pet. Dormant
  • This series is a Ben 10 and Stoked Crossover, to clarify, alternate Season 1 of Stoked; it will start off fairly close to "canon" Season 1, but will gradually start to diverge. In the Ben 10 universe, this story starts just after Season 2 of Alien Force, before the start of Season 3..
    • To briefly summarize this, this series involves Ben (and later, Kevin and Gwen) getting hired to work at Surfer's Paradise for the summer, joining the groms and dealing with both regular teenage problems (eg relationship issues) and the more extraterrestrial Arc Villains. It's one of those series that is wonderful all around, and it will definitely get you hooked.
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Harrison Tennyson by spitfyre1
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Harry Potter, Danny Phantom
  • Status: Ongoing
  • Synopsis: After Vernon went too far one day Harry found himself a new family. Meet Harrison Tennyson. Hero. Plumber. How will he handle his new responsibilities as the world he left behind wants him back?
  • Comments: Harry is half-anodyte before Max adopts him as Ben dies, and Kevin is a female.
The Hero Among Heroes by Stikes2018
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Young Justice (2010)
  • Status: Ongoing
  • Synopsis: After the road trip around the universe Ben returns a changed man. Something in him changes the once fun and somewhat egotistical boy is now scarily efficient in his role as a hero. After a threat comes to his attention Ben is thrust into another adventure this time in a world full of heroes. Now working with heroes his age can Ben become the destined Hero of Heroes once again?
  • Comments: In an attempt to save Grandpa Max, Ben gets sent to the Young Justice's world and ends up using Alien X to take off Doctor Fate's helmet, causing Ben's world to go unstable, with Paradox tells them to stay until it is stabilized. the Tennysons exist in this other universe but they are civilians - with Young Justice!Ben undergoing Plumber's training - until Ben gave the Young Justice!Gwen a Lucky Charm bracelet.
Heroes Never Die; It's Hero Time by Guardian_Sigil (FF.Net Link)
  • Recommended by: X59, VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover with: My Hero Academia
  • Synopsis: "One would think that in a world where everyday people possess impossible abilities; nothing would really be a surprise. For Izuku Midoriya, who upon the age of four was diagnosed as quirkless and thus was denied of his dream of become a hero that can save everyone with a smile. But fate gives him a chance; allowing him access not to one but a universe of powers and abilities. Together with his friends, family, and allies at his side he will rise up to protect all that they care for."
  • Comments: Primarily focused on the characters of My Hero Academia, with the worlds and lore of Ben 10 incorporated within. While Ben doesn't exist aspects of his character have been placed within Izuku beyond obtaining the Omnitrix such as the minor fear of clowns and the feud with Mr. Baumann.
  • Trope page here.
The Hunter's Monomyth by i4md347h
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: One-Punch Man
  • Status: Ongoing
  • Synopsis: After losing to the strongest hero, Garou woke into a world so alien yet so similar. Trapped inside another, he must set out with unlikely companions to uncover the secrets of his transmigration into a world where aliens fill the stars and evil from multiple timelines endanger the universe in his journey down the path of self-discovery.
  • Comments: Garou finds himself taking over Ben's body, Gwen ends up possessing the Omnitrix, and Kevin ended up joining the roadtrip.
Infinity Legion: Heroes Unite by TvFan2244
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It's Saiyan Time! by Isaiah Jager
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Various, including Dragon Ball & Marvel
  • Status: Ongoing
  • Synopsis: Sup, this is Cal. I'm your average Joe except that I died and didn't know till this guy called ROB told me. I can choose a new life to live in any universe. I figured, if I was going to enjoy this, I better be a pretty powerful dude. But not too powerful, well maybe have a few perks. Look out world, a saiyan is here to be a true badass.
  • Comments: An OC isekai'd into OS!Ben as a Saiyan with a Symbiote in tow.
JoJo's Alien Adventure by Bigby the Big Bad Wolf
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: JoJo's Bizarre Adventure
  • Status: Dead; last updated January 25th, 2020
  • Synopsis: Ben has fought many powerful adversaries but is he ready to take on the world of Stands?
  • Comments: Ben unlocks a Stand that works as a second Omnitrix, allowing him to fuse his forms or use two different powers at the same time.
  • Has a Trope page
KoBENi by Anime0CC0Manga (Wattpad link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Chainsaw Man
  • Status: Ongoing
  • Synopsis: The Saddest Cry Baby In The World Gets The Most Powerful Weapon Ever.
  • Comments: On her vacation, Kobeni found Omnitrix and it ended up latching on her as a collar instead of a watch, and its fail-safe includes protection from Makima's power. This allows her to be immediately promoted to Special Division 4's squad leader, and she ended up being the first person who Denji meet after his merging with Pochita...
Legend of 10 by Ripple247
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: The Legend of Korra
  • Status: Ongoing
  • Synopsis: On a fateful day in the park, a young man's life is changed when seeing a shooting star fall from the night sky. Watch Ube rise to be a hero, though it's kinda hard to be a hero when your mom is the police chief, and the avatar mistakes me for a spirit.
  • Comments: An OC who was adopted by Lin Beifong, who ended up finding the Omnitrix as he turned into a teenager. Could use better spelling & text formatting.
Like An Alien by SilverSoulmmc (Ao3 Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Like a Dragon
  • Status: Ongoing
  • Synopsis: After the events of Yakuza 3, Haruka Sawamura reflects on her inability to protect the people close to her from those who stand above her in both body and position. She wants nothing more than to help her Uncle Kaz and protect her new home. Luckily for her, all it takes is wishing upon a falling star to achieve what you want.
  • Comments: Haruka imprints a lot of Kiryu's traits, including his Chronic Hero Syndrome, to his frustration.
Loud 10 By Ninjamon1228
  • Recommended by: qazsedc
  • Status: Ongoing
  • Crossover with: The Loud House
  • Synopsis: A watch-like device falls from space and attaches to Lincoln Loud and gives him the power to transform into different aliens. Now he, Leni and his dad must work together to stop petty thugs, mad scientist and evil warlords all while trying to keep Lincolns secret from the rest of his family.
  • Comment: Along with having a different starting ten aliens, this fic combines episodes from both Ben 10, Loud House, and has original episodes in it. Extremely touching, suspenseful, and epic with plenty of humor, and tons of references from movies, games, comics, and shows, both TV and web. His favorite being Team Four Star. The author also has the characters on point, with lots of development, and tries not to focus on the toxic traits every other author abuses. Amazing read, highly recommend.
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Marco X vs The Forces of Evil by CHAOSCONTROLFREAK455
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Star vs. the Forces of Evil
  • Status: Ongoing
  • Synopsis: It had been 3 years since he wore it. Since he took it off. Since he left that life behind. But with the arrival of a certain magical princess, he doesn't have a choice. He'll have to wear it again. To protect her, and everyone close to him from the upcoming chaos. Look out world, Marco X is back!
My Alien Academia by The Incredible Muffin
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Various, but mostly My Hero Academia & DC Animated Universe
  • Status: Ongoing
  • Synopsis: Some worthy souls are chosen to carry the mantle of great heroes. Sometimes, this is destiny. Other times, it's all about being in the right universe, at the right time, chosen by the right watch.
  • Comments: Psuedo-sequel to Ben 10: Unlimited. Izuku got Omnitrix with an AI based on Ben, forming friends with future U.A students, and Azmuth is Responsible for causing the emergence of Quirks in Izuku's Earth.
My Hero Academia: Rising Alliance by Super Saiyan 4 Rukido
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia & Marvel Comics
  • Status: Ongoing
  • Synopsis: Earth as we know it today felt like they could expect anything. They had Heroes with powerful Quirks, technology that benefited them greatly and a society that wouldn't crumble to pieces easily. What's there to worry about? How about villains hellbent on world domination, a few secret organizations and Aliens from Space? Lucky for the Earth it has it's own protectors just for them!
  • Comments: An OC with Omnitrix & Ship, Todoroki is a girl and Bakugo has a twin sister named Katsumi. Oh, and a HPSC spec-op agent OC turns out to possess a Klyntar on him, and accidentally spills some onto Stain...
My Omnium Academia by Emiyn
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Dead; Last updated March 14th, 2019
  • Synopsis: When Ben Tennyson was sucked into the Null Void, his dream of being a Hero seemed to had vanished. It didn't help that he had to fight for the survival of the fittest, but what would happen if he were to return to Earth...but not as his own? What would happen if he learned that being a Hero could be done as a profession?
  • Comments: Ben spent 2 years in Null Void, after beating Kevin & Vilgax, before coming out in MHA world, right on Yaoyorozu's garden few years before canon, and ended up becoming her personal butler, joining class 1A with her.
Naruto: Alien Force by Pyroknight137
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Naruto
  • Status: Dead; Last updated April 16th, 2022
  • Synopsis: When two great heroes meet, both of their worlds will never be the same.
Of Gemstones and Watches by Transwiththeplans
  • Recommended by weissqueen
  • Crossover with: RWBY
  • Status: Ongoing
  • Synopsis: In an alternate timeline, Ben Tennyson instead travels his summer with the equally mischievous Ruby Rose. But there's something more to this girl than meets the eye, and once Ben receives the Omnitrix, their summer takes a strange, and sometimes more horrifying, turn.
  • Comments: This now has a wiki page in desperate need of some love.
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Omni-Directional Warhammer by oliverjack666
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Various media, but mostly Warhammer 40,000
  • Status: Ongoing
  • Synopsis: A poor sap gets thrown into Warhammer 40k with the Omnitrix. In the Grim Dark of Warhammer, It's time for a nobody to be a Hero!
  • Comments: An OC got transported into the Warhammer 40K galaxy with an Omnitrix that contains not only Ben 10 aliens but also Warhammer 40K's, Mass Effect 's, X-COM 's, Dragon Ball's, etc. With the help of Farsight Enclave, could our protagonist bring hope to this war-torn galaxy?
Omni Evolution by Gigglingskull.
  • Recommended by: ssjSega
  • Status: On Hiatus. Though the author has expressed a desire to continue it.
  • Crossover with: X-Men: Evolution
  • Summary: "We all know Mystique had two children in her life. Kurt, the son lost as an infant and Rogue, the adopted daughter. What if she had a third child? What if this one was thought dead by everyone, but had actually survived? Watch as a family is reunited, the waves it creates and as a small child regains the mother they lost."
  • Now has a tropes page. In DESPERATE need of wiki love.
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Omni Falls by EJthe24th
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Gravity Falls
  • status: Dead; last updated January 29th, 2022
  • Synopsis: Dipper thought Gravity Falls was weird when he got here with his sister, Mabel. Not only does he find a mysterious journal, but he also finds a weird-looking watch. Now with a powerful watch and an informative journal, he and his sister will discover many secrets of this town and how deep it gets.
  • Comments: In this one, the journal also contains information about Omnitrix's alien form, helping Dipper master them faster.
Omnifusion: Adventure by ChibiTaylor
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Steven Universe
  • status: Ongoing
  • Synopsis: S1: Ben Tennyson's summer vacation was made a bit more exciting than he thought. Steven Universe and his family of Gems tag along. On top of that, Ben finds a device that lets him turn into 10 different aliens. s2: After narrowly escaping the Homeworld Gems, Ben Decides to chill out in Beach City... but things only got more Bizarre!
The Omnitrix and the Umbral Star by JDog2K
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Fate/Extella: The Umbral Star
  • status: Ongoing
  • Synopsis: In one world, two thirds of the Extella Trio are having a ball with who may be their greatest partners, Tamamo with an unlucky spiky teen with a mysterious right hand, Nero with a boy with more guts then one hundred spec ops soldiers, but what about the final member? Well she gets flung into a different world and entwines her fate with that of a young watch wearing hero of course!
  • Comment: Ben discovers Kid!Altera alongside the Omnitrix. shenanigans ensue.
The Omniversal Chat Group by Im4xsk1ll
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Various
  • Status: Ongoing
  • Synopsis: On one peaceful day in Bellwood, Ben was chilling and drinking his smoothie until he received a very weird message about joining a shady "Dimensional Chat Group". Seeing nothing wrong with it, he decided to join in.
  • Comments: Ben befriends Issei Hyoudou, Kirito, Todoroki Shoto, and Asta through a chatting app that has unique features, including able to send a user to another user's world.
The Other Universe by PlutonBlack
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Steven Universe
  • Status: Dead; last updated July 16th, 2015
  • Synopsis: Steven and Connie are saved by a superhero from another world, and Steven being the person he is, easily befriends Ben Tennyson. But the Crystal Gems are having their own problems, with monsters appearing out of the woodwork, only to vanish into thin air. They aren't too sure they can trust Ben either, or his idea of what a hero really is.
Planet Olympus by My Little Demigodly Brain
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Percy Jackson and the Olympians
  • Status: Ongoing
  • Synopsis: When the worlds of Percy Jackson and Ben 10 collide, crazy stuff is bound to happen. Join Percy, Annabeth, Ben and Gwen on an incredible journey which might just question everything they've known till now.
Priestess 10 by SilverSoulmmc (Ao3 Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Persona 4
  • Status:
  • Synopsis: It's been a couple of months since Yu Narukami and The Investigation Team solved the case and returned peace to their town of Inaba. Yukiko Amagi was looking forward to spending the upcoming summer with her friends however it seemed that her parents had other plans for her, plans that involved sending her to America for a Summer Road Trip with relatives she's only recently heard of.
  • Comment: Yukiko joins the Tennysons in their summer vacation just as the events of Persona 4 are over. Due to certain circumstances, She can now use her Persona in the real world, although only Ben and Gwen can see it.
Prime 10 by LibraryNexus
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Transformers: Prime
  • Status: Completed; Author has shown interest in a rework
  • Synopsis: Jack has always wondered who his dad was. Turns out he was also involved with aliens. And when Jack gets an old gadget that belonged to his father, the Autobot/Decepticon War takes a whole new turn...
  • Comment: Jack's mother turns out to be Julie Yamamoto, and his father, Ben Tennyson, has sacrificed his life to save the Earth. Now, wielding Ben's Omnitrix, Jack will follow his father's footsteps as he deals with Autobot - Decepticon War.
Ren 10 by Dark Mage Wyvern Lord
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Persona 5
  • Status: One-Shot
  • Synopsis: Ren Amamiya was a teen of mystery, the Phantom Thieves knew that. But what they didn't know was Ren used to have another face, or two, or 10.
  • Comments: Ren is secretly a alien hero, his mother is a Plumber agent, and his probation was a ruse to keep an eye on Shido. All with the Metaverse stuffs going on.
Rise of G-Morph and The Amazing Spider-Man by Amit Barabi
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Spider-Man
  • Status: Ongoing
  • Synopsis: Gwen Stacy is chosen to become the successor of Ben Tennyson. Read and enjoy her origin as the heroine, G-Morph, and her ever-growing adventure with her arachnoid boyfriend.
Rising Voltage by Phaze Part 2
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Ongoing
  • Synopsis: They were just legends. Legends of a device that could allow one to transform into anyone. But they were just that. Legends. Fables told to children before bed. So, what would happen if that device appeared in the hands of a human who struggled with grades and with his quirk? Well, that would be the story of Denki Kaminari.
Robin 10 by Epiclot214
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Teen Titans (2003)
  • Status: Ongoing
  • Synopsis: After years of being Robin, Dick Grayson decided to go on a trip to find himself. Along the way, he meets the Tennyson family trying to enjoy their summer vacation, when suddenly, one of them finds a strange watch that transforms him into different aliens. Now, Robin must accompany the Tennyson family as they fight threats from both Earth and outer space.
  • Comments: Dick Grayson on the journey of self-discovery and Koriand'r as a mentee of Xylene joins the Tennyson's summer vacation.
  • Has a Trope page.
Runeterra: The Long Journey by CupcakeLover7
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: League of Legends
  • Status: Ongoing
  • Synopsis: Benjamin Tennyson's life in Piltover has always felt limiting to him, especially with a strict woman like Caitlyn as his sister. But when he discovers a journal left behind by his dad, he finds the desire to trace his dad's footsteps and discover what the world of Runeterra can offer him, from monsters, to legendary champions to even unexpected things like... love and friendship!
  • Comments: A Fusion Fic where Ben was adopted by the Kirammans when he was young. Years later, he develops curiosity about his origin and decides to backtrack his father's journey through a journal he recently found.
RWBY and Emerald by Pyroknight137
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: RWBY
  • Status: Dead; last updated November 10th, 2018
  • Synopsis: When Gwen causes a magical mishap that sends Ben to another world filled with danger, monsters, evil organizations, and other young heroes, he has to give it his all to not only make this new world a better place but just survive as well.
RWBBYVerse: Clash of Heroes by bcarandang1
  • Recommended by: tierhalibel
  • Status: Cancelled and eventually deleted.
  • Crossover with: RWBY
  • Synopsis: Ben Tennyson is accidentally sent to the RWBY universe and tries to fit in. But when he finds out he's a clone of the actual Ben Tennyson, will he actually be able to fit in this foreign universe?
  • Comments: Although the shipping seemed rushed, the rest of the story is quite well written. I hear the writer will actually explain how the ship went so fast. Overall, good story.
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RWBY 10 by Fregreg
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: RWBY
  • Status: Ongoing
  • Synopsis: One month before Yang is supposed to enter Beacon, a school built to train the next generation of protectors of Remnant, a watch falls in front of her Sister Ruby Rose. The watch was the Omnitrix. Now armed with ten aliens Ruby tries to become the huntress that she always wanted to be.
  • Comments: Omnitrix was meant for Summer Rose, but eventually find enough genetic similarities in Ruby.
Size by Kariachi
  • Recommended by: ThisIsRidiculous
  • Status: Complete
  • Crossover with: His Dark Materials
  • Synopsis: Unless small size was needed he would be something big and obvious. A ziboson like Kraphal, or a sand ripper, something of that like. The consensus was that he was making up for all the mass she lacked and that this was perfectly acceptable from a daemon...
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Stargate: Omniverse by DoctorEd17
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Stargate Universe
  • Status: Dead; last updated May 15th, 2019
  • Synopsis: Frank Mc Kay gets a package containing an Omnitrix and when he put it on he is transported to the Destiny at the beginning.
  • Comment: A OC find himself in the Destini spaceship wearing a Omnitrix.
Steven 10 the crystal knight by BlackSkull Universe
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Marvel Universe
  • Status: Dead; last updated December 20th, 2019
  • Synopsis: In an alternate universe, Steven Universe had obtained the Omnitrix and uses it to help him protect Beach City and become a real Crystal Gem. But he'll be having some help from an outside force, the ex hero Ben Tennyson!
Strike of the Storm by Corrodium
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Marvel Universe
  • Status: Dead; last updated May 14th, 2022
  • Synopsis: Proceeding the fateful battle with Dagon, Ben follows in his grandfather's footsteps, becoming a Plumber. After serving for over a decade, an old foe leads him back to Earth, where he gets caught up with enemies, old and new alike, and a dubious organization that can't seem to leave him alone. When Ben Tennyson thought he had seen everything, he couldn't be further from the truth.
  • Comments: Fury jumped the gun when he saw Ben with dead Vulkanus Minions, mistaking him for murdering innocent aliens, not knowing about Plumbers, so now Ben trusts S.H.I.E.L.D. as much as Nick Fury trust most people - barely.
Tempest by allusionmaster
  • Recommended by ultimomant
  • Status: Ongoing
  • Crossover with: Fate/Apocrypha
  • Synopsis: While battling some magical villains, Ben Tennyson gets injured and the Omnitrix is damaged, causing him to be stuck in Frankenstrike's form. Then he falls into a portal and is transported through time and space. He lands near the female Frankenstein's Monster, who thinks he is the husband that Dr. Victor Frankenstein promised her, while he thinks she is a fellow Transylian. The misunderstanding is sustained because she only speaks French while he only speaks English.
  • Comments: Warning, there is a lot of graphic violence, language, nudity, and sexual situations. However, Fran is simply adorable.
Ten Times the Witch by Anonymous567
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: The Owl House
  • Status: Ongoing
  • Synopsis: Months have passed since the Highbreed Invasion, an attempt by a dying race to make sure that when they die they won't be going to the afterlife alone. Luz Noceda, Wielder of the Omnitrix, saved the entire galaxy from their wrath but now has to deal with the repercussions of his identity getting exposed when she fought against the Invasion with her friends and allies. With luck, this Summer vacation will just be the first relaxing (relatively) vacation she's had since five years ago when she found her Omnitrix. But she knows deep down that fate wasn't that kind.
  • Comments: The Nocedas replace the Tennysons in this fic, and instead of just learning magic, Luz has a Witch form instead.
That's One Way To Do It by Viper_Rock
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Lilo & Stitch: The Series
  • Status: One-Shot
  • Synopsis: Ben Tennyson has gotten reports of alien activity on one of the Hawaiian islands. What he finds isn't what he expected.
    Ben is just very, very confused by Lilo, and a little bit concerned.
Threading The Needle by surrealer
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Halo
  • Status: Dead; last updated December 11th, 2022
  • Synopsis: In a world where humanity is at the edge of extinction, Eleanor Cross has to figure out the balance between defending herself and her Plumbers from ONI and working with the UNSC to take down the Covenant. The Master Chief, in all of his glory and nobility, is making it very difficult to see where the line is between the "black ops bastards" that ONI is perpetually populated with and the heart-of-gold heroes of the war.
  • Comments: This story takes place in a universe where Ben Tennyson and his team were born in the 2500s, a few years before the Covenant attacked humanity. Decades later, an Anodite-Human hybrid OC, Eleanor Cross, must return to the organization that betrayed her and her family to stop the Covenant from blowing up the entire galaxy in a misguided attempt to attain divinity. And as luck would have it, she is partnered with the only person in the UNSC who stands a chance against her — the Master Chief.
Trying to Make A Change by Ebynblade
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Cyberpunk: Edgerunners
  • Status: Dead; last upadated October 27th, 2022
  • Synopsis: In Night City most people ever make a name for themselves when they die, for David Martinez however, he's going to become one of the few living legends. All thanks to an alien device that stuck itself upon his wrist.
  • Comments: David managed to prevent the corrupted BD from frying the academy software thanks to Grey Matter, and saves his mom with XLR8. However, Vilgax had set his eyes on Night City...
Ultimate Alien: Primarch Force by Pravus666
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Warhammer 40,000
  • Status: Ongoing
  • Synopsis: What happens when in a Hail Mary to destroy Vilgax in their final battle, that Ben is sent hurtling across space-time throughout the Omniverse; and finds himself not only in a different one entirely...but 30,000 years in the future...Well, strap in as our intrepid Hero enters into the Great Crusade and battles against the Ruinous Powers.
  • Comments: A version of Ben 10K is stranded in the Imperium Galaxy around 30K, in a mysterious planet with gender-bended Primarchs.
Ultimate Fairy by Ultimate10 / pyrohelixdrago
  • Recommended by eruptor 142
  • Status:
  • Crossover with: Fairy Tail
  • Synopsis: Ben Tennyson has found himself in another universe, one filled with magic he never imagined. He comes across a few wizards who invite him to their guild, Fairy Tail. With no immediate ways to return home Ben must adapt to this new world, form new bonds, and grow stronger with his teammates to overcome many obstacles.
  • Comments:
    • Once one of the biggest Ben 10 crossovers, it may start simply being Ben sent to the land of Fiore, but slowly but surely, it grows bigger, having its characters evolve in different ways, alongside giving Ben an Adaptational Angst Upgrade.
    • Unfortunately while Ultimate10’s work is some of the best storytelling for any Ben 10 crossover, even earning Ultimate 10 a whole wiki for it alone, this took a drastic turn when he couldn’t continue to write the story and gave it to an author known as PyroHelixdrago. Which later proved to have been a terrible mistake. As much as they clearly wanted to do their best taking the reins…they have not been handling this story very well and has ultimately caused the quality of Ultimate Fairy to take a massive nosedive; as it’s heading in a completely different direction, and not in a good way whatsoever.
    • Overall, be wary of Pyrohelixdrago's version, as they have forcefully changed numerous things about this story that are deemed quite unnecessary by fans of the Ultimate10 version, and feel like Pyrohelixdrago is simply changing things on a whim without really justifying them. Such as retconning Omniverse elements back in when Ultimate10 was effectively eliminating that timeline by starting the story around UA timeline and making everything that happened beforehand non canon, giving Erza Nanites for some unnecessary reason, Ben suddenly adopting Wendy despite how awkward it feels, the Fairy Tail cast getting sporadically sent to Ben’s World, merging Ben & Generator Rex's Earth despite their official crossover establishing they exist in different universes, making Elfman & Mirajane suddenly able to use Take Over Magic with Ben's alien forms without any consequences, Lisanna suddenly appearing out of nowhere despite Ultimate10 previously building up her and Natsu’s reunion, and giving every member of Fairy Tail Plumber badges without even earning them to begin with, or how Ben and Erza despite only knowing each other for a couple of months are getting married, not to mention how rushed the story becomes around Edolas Arc, on top of the grammar becoming abysmal.
    • Needless to say this once fantastic story can no longer be really recommended to many people because of all these negatively drastic and forceful changes Pyrohelixdrago has done in Ultimate Fairy. Resulting in many fans of Volume 1 to voice these criticisms in droves and some even asking Ultimate10 to come back and do something before their story is irreparably ruined by its newest and quite frankly poorly inexperienced author. But most of the other fans are simply urging Pyrohelixdrago to give this story to an author who is more competent with their writing, and can properly continue Ultimate Fairy; as they are clearly biting off way more than they can chew. But it’s unlikely anything will be done so far, as Pyrohelixdrago is seemingly ignoring all these honest criticisms and is dead set on continuing Ultimate Fairy in his own way, despite how detrimental it’s proven to be. Not to mention Ultimate10 has been currently working on a completely different Ben 10 X Fairy Tail fanfic called "A Lost Heroes Fairytale" that is separate story based off the original fanfic he wrote albeit as a harem fic with an amnesiac Ben.
Ultimate ga Kill! by MegaRdaniels
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Akame ga Kill!
  • Status: Ongoing
  • Synopsis: Ben Tennyson never seems to run out of crazy adventures, but this has to be one of his craziest yet. When he is discovered by Night Raid, a group of assassins fighting for the Revolutionary Army, Ben must decide whether to join them or become a soldier for the corrupt Imperial Capital.
  • Comments: While Night Raid & Akame are...flip-floppy about their opinion of Ben, That does not stop him from doing what's right.
    • The story has recently returned after a long hiatus yet has chosen to basically reboot, everything that it had happened before the story has stopped updating for a while, and for some reason the quality of the writing has become rather rushed.
Ultimate Kaisen by Shinobi360
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Jujutsu Kaisen
  • Status: Ongoing
  • Synopsis: He was supposed to be dead. After sacrificing himself to save the Ultimates, Ben finds himself not in the afterlife, but in a world far different from his own. Stranded with no way to return back home,Ben must adjust to his new life. However,it seems that wherever he goes, his responsibilities as a hero still remains the same. Only instead of fighting Aliens,he now faces Spirits.
  • Comment: in this story, Ben will eventually awaken his Anodite powers. if you're not into that, this is not for you. the best part is Ben and Yuuji's friendship and the fight scenes.
Ultra Legions Heroes United by Arsenal10
Weeping by catlover2976
  • Recommended by: Storygirl000
  • Status: Complete
  • Crossover with: Doctor Who
  • Synopsis: During a fight with Animo, Ben decides to use a new alien. But those who take the form of an angel become an angel. Kevin and Gwen better learn the rules to this red light, green light game before they're sent back in time. (Quick one-shot).
  • Comments: Or, if the title and synopsis aren't obvious enough, Ben unlocks a Weeping Angel form on the Omnitrix and uses it with disastrous results. A quick, fun, creepy read.
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We'll Carry On: An Ochako Omnitrix Story by Transwiththeplans
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Ongoing
  • Synopsis: Ochako Uraraka finds herself unexpectedly taking on the mantle of the Omnitrix wielder from Ben Tennyson. As Ochako begins to explore the capabilities of the Omnitrix, she must also navigate the complex relationships and alliances, all while facing off against increasingly powerful enemies.
Wielders of the Omnitrix by bloodyredrose1994
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: The Simpsons, Johnny Test, Wayside
  • Status: Ongoing
  • Synopsis: The Omnitrix. The most powerful device, able the wearer to become any alien lifeform. We have seen what the current wearers have done, but let us explore the Omniverse and take a look at those who found the device.
  • Comments: This is a series of One-Shot stories about different characters from different settings finding the Omnitrix.

    Alternate Universe 
Stories with a different universe than Canon

BEN X by The Holy Heretic

  • Recommended by: Cyclopsman
  • Status: Finished
  • Synopsis: Ben, Gwen and Kevin go to an alternate universe where they meet a different version of Ben, a version that is older, more powerful, and possibly more evil than anyone or anything they've ever encountered.
  • Comments: Probably one of the better written, more creative Fanfics, it has elements of a deconstruction, reconstruction, and is generally a page turner.
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Ben 10: Guardians by Shadow-DJ

  • Recommended by Araitsume
  • Status: Ongoing
  • Pairings: Benlie, Gwevin, and others
  • Synopsis:
    • Ben 10 Guardians Season 1: The Faction: Omniverse AU fic. A few months after the event with the Diagon, Ben has to go through a new beginning after Gwen and Kevin leave for collage. But when a new threat arrives, Ben has to work with a new team: with rookie Plumber Rook Blonco and his girlfriend Julie, along with Ship. Can this team take on the threats presented to them? (Complete)
    • Ben 10 Guardians Season 2: Malware's Revenge: Season 2 of Ben 10 Guardians: A few months after Khyber's defeat, Ben and his team reunites with old friends as Malware makes his move. Can the Plumbers take on this threat as well as jealous scientists, a angry hunter, and many other threats. With a surprising new ally and new aliens, Ben may have a shot at going against a threat that has haunted him since childhood. Omniverse AU (Complete)
    • Ben 10 Guardians Season 3: Incursean Invasions: Malware and the Faction have been defeated, but now Ben has to deal with a galaxy-wide threat; the Incurseans have stepped up their game and are on the verge of universal conquest. Attea at the helm of a powerful alliance, Ben has to get old allies and new alike while trying to keep Morale on Earth up...especially when evil does not rest at the cusp of War. Omniverse AU (Dormant; last updated January 2020; has resumed September 2022)
  • Comments: In the author's own words, this is mostly a Fix Fic of Ben 10: Omniverse.
1 Review

Myles Bots by Unknown

  • Recommended by: Conspiring Colors
  • Status: Ongoing
  • Sypnosis: Max Tennyson (as Overflow) has a main character role in the fanfic.
  • TV Tropes Page
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Wielder of the Omnitrix by csgt

  • Recommended by realmofshadows
  • Status: Dormant; last updated July 2020
  • Synopsis: Futuristic AU. Ben Tennyson never wanted to be a hero or a rebel, but life never gave him a choice. Neither did the Omnitrix. A choose your own adventure type story where the character choices are decided by the audience!
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Playing the Odds by Nate-Mihael

  • Recommended by realmofshadows
  • Status: Dormant; last updated September 2020
  • Pairings: BWEN (Ben/Gwen).
  • Synopsis: By day, Gwen is the smartest girl in her class. The one everyone can depend on, especially her lazy cousin, but by night... A Superhero AU
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Infinity by Ultimate10

  • Recommended by: VictorioMWolff-Haddock
  • Status: Complete
  • Synopsis: There's always more to reality than one imagines. Through Cross-Time, alternate worlds with different histories and scenarios are made possible. Join Professor Paradox as he guides us through these new realities of the Ben 10 classic timelines. Come, and let's ponder the age-old question... What If?
  • Comments: inspired by What If…? (2021). Paradox and Dagon (the latter was by force) are observing all possible realities for the alien shapeshifter.

OmniGlitch AU by Justmenoworries

  • Recommended by: Jackie-Chaos-Bunny
  • Status: Ongoing
  • Synopsis: An AU in which a glitch in the Omnitrix caused the aliens to become actual people. The series follows their adventures as the heroes of earth, as well as their daily lives and struggles.
  • Comments: A really interesting and endearing AU where the aliens are now their own beings and form a found family with Ben, Gwen and Max.

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