Ben 10 Crossovers
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Ultimate ga Kill! by MegaRdaniels reviews
Ben Tennyson never seem 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.
Crossover - Ben 10 & Akame ga Kiru/アカメが斬る - Rated: T - English - Adventure/Sci-Fi - Chapters: 59 - Words: 164,169 - Reviews: 956 - Favs: 765 - Follows: 723 - Updated: 3h - Published: 11/1/2016 - [Ben T., Akame, Sheele] Esdeath
Jason 10: Hero of the Universe (E-10) by Chadw996 reviews
While working under Max Tennyson, Jason comes in contact with an alien device that grants it's user the power to transform into aliens, The Omnitrix. He begins fighting crime and anyone after the power he now has. Slowly becoming the greatest hero in the universe. (Harem) [Dc/Young Justice, Ben 10, Transformers, and maybe more crossover]
Crossover - Young Justice & Ben 10 - Rated: M - English - Adventure/Humor - Chapters: 5 - Words: 28,009 - Reviews: 1 - Favs: 31 - Follows: 27 - Updated: 13h - Published: 4/19/2023 - Jason T./Robin II, Gwen T.
Ben 10 x RWBY: Of Gemstones and Watches by Transwiththeplans reviews
Ben Tennyson meets Ruby Rose during his summer break, and picks up both the Omnitrix and a thrill for action. Along the way, Ben discovers new alien forms, develops new techniques to use in battle, and a blossoming romance, while also forging close bonds with his new friends. But can he and his friends handle being thrust into a conflict between good and evil? (Cover by elmike)
Crossover - Ben 10 & RWBY - Rated: T - English - Adventure/Sci-Fi - Chapters: 178 - Words: 1,363,438 - Reviews: 529 - Favs: 691 - Follows: 670 - Updated: 17h - Published: 12/26/2018 - [Ben T., Ruby R.] OC
My Alien Hero: Izuku 10 by zerobound reviews
Everyone knows Izuku Midoriya when he got his Quirk One For All from All Might to become the greatest hero. In this one, he returns that special Quirk and he is now the wield of the Omnitrix. Rate T later M
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 10,743 - Reviews: 8 - Favs: 32 - Follows: 36 - Updated: 3/14 - Published: 10/8/2023 - Azmuth, Izuku M., 1-A Students
We'll Carry On: An Ochako Omnitrix Story - Volume 1 by Transwiththeplans reviews
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. Cover by @ZebraKnight1 on Instagram
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Humor - Chapters: 93 - Words: 611,168 - Reviews: 140 - Favs: 180 - Follows: 169 - Updated: 3/14 - Published: 12/31/2022 - [Ochako U., Izuku M.] Ben T., Tenya I.
Remnant's Alien Defense Force by vanquish356 reviews
All his life, Jaune wanted to become a huntsman so he could protect others. However, everything comes crashing down when Ozpin learns about his forged transcripts and expels him from the school. Jaune thought that was it, and he could no longer chase his dream. Yet, that all changes when he stumbles upon the Omnitrix. Maybe there was hope for him still to chase his dream.
Crossover - Ben 10 & RWBY - Rated: T - English - Chapters: 1 - Words: 12,595 - Reviews: 9 - Favs: 25 - Follows: 33 - Published: 3/13 - Jaune A.
Guardian Digimon Book 1 Guardian of the Sea Remade by Redwallfan2000 reviews
When several evil organizations start disappearing and being quiet, Sailor Sun makes the risky choice choosing six heroes on Earth to prevent an evil Digimon's return by searching out the four special Mega Level Digimon known as Guardian Digimon. The Guardian Seekers begin their mission by searching for the first Guardain of the Sea.
Crossover - Digimon & Ben 10 - Rated: T - English - Adventure/Romance - Chapters: 13 - Words: 101,030 - Reviews: 25 - Favs: 13 - Follows: 12 - Updated: 3/13 - Published: 12/7/2023
Ben 10 Young Justice by Asistis55 reviews
This is as the title says a crossover between the two shows, with Eon as the main treat and his villain team. Eon plots to obtain the anti-life equation in order to be able to defeat Alien X, however, Eon will prove to be a formidable enemy to the Light/Apokolips. Eon will end up being an arch nemesis to Vandal Savage. Ben will get to meet the League/Outsider eventually.
Crossover - Ben 10 & Young Justice - Rated: M - English - Adventure/Romance - Chapters: 2 - Words: 12,225 - Reviews: 2 - Favs: 9 - Follows: 8 - Published: 3/13 - Ben T., Albedo, Eon, M’comm M./Ma’alefa’ak
KoBENi by Anime0CC0Manga reviews
The Saddest Cry Baby In The World Gets The Most Powerful Weapon Ever (I Own Nothing)
Crossover - Chainsaw Man/チェンソーマン & Ben 10 - Rated: K - English - Horror/Humor - Chapters: 7 - Words: 8,582 - Reviews: 18 - Favs: 28 - Follows: 26 - Updated: 3/13 - Published: 2/5 - Kobeni, Kevin, Denji, Makima
Ben 10 meets DC Superhero Girls Rise of the Beast by skipper.weinkauf reviews
Here we will see the heroes return with a whole new adventure, and old foes will tried to take over the multiverse
Crossover - DC Super Hero Girls & Ben 10 - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 18 - Words: 29,124 - Reviews: 34 - Favs: 15 - Follows: 16 - Updated: 3/12 - Published: 9/12/2023 - Kara K./Supergirl, Ben T.
The Wielder of the Boosted Ultimatrix by Nefarious Doctor reviews
There will always be a hero in any world, but what happens when the most powerful alien device ends in the hands of another ten-year-old boy who was also a wielder fo a powerful Longinus? Let's see.
Crossover - Ben 10 & High School DxD/ハイスクールD×D - Rated: T - English - Supernatural/Adventure - Chapters: 4 - Words: 20,046 - Reviews: 18 - Favs: 76 - Follows: 82 - Updated: 3/12 - Published: 11/2/2023 - [H. Issei, Charmcaster/Hope]
Wrath Of A Fallen Hero by Mace sheperd reviews
Heroes let villains get away with an awful lot. But what if a villain were to push a hero too far? When Albedo pushes Ben Tennyson past his breaking point all villains will feel the wrath of a fallen hero.
Crossover - Ben 10 & Kuroinu: Kedakaki Seijo wa Hakudaku ni Somaru - Rated: M - English - Sci-Fi/Romance - Chapters: 2 - Words: 16,872 - Reviews: 13 - Favs: 24 - Follows: 31 - Updated: 3/12 - Published: 3/9
Lost Hero by FrogToaster reviews
Ben Tennyson just started his hero career at the age of 10. But he already has a pretty interesting list of villains he faced during his summertime. Many wanted to get their hands on the alien watch, Omnitrix. But today he faced the villain that aimed not just his watch but himself, Eon. During their battle they traveled through dimensions into new world, full of alot of new things
Crossover - Ben 10 & Young Justice - Rated: T - English - Adventure - Chapters: 4 - Words: 10,755 - Reviews: 19 - Favs: 52 - Follows: 65 - Updated: 3/11 - Published: 2/19 - Ben T., Eon, Bruce W./Batman, Alfred P.
Ben 10-Justice League: The Series by darkstorm1364 reviews
Ben Tennyson was abducted by aliens when he was 10 years old after accidentally received the Omnitrix, but then got rescued by Tetrax. He also brought Rook Blonko with his side. Both Ben and Rook are orphans, where Tetrax trained them to become the Galactic Guardians. Then after reaching his teen years, he received the Ultimatrix and recruiting more members.
Crossover - Justice League & Ben 10 - Rated: T - English - Adventure/Drama - Chapters: 24 - Words: 209,390 - Reviews: 146 - Favs: 340 - Follows: 320 - Updated: 3/11 - Published: 6/7/2020 - [Linda L./Kara Zor-El/Supergirl, Ben T.] Clark K./Kal-El/Superman, Rook
It's Saiyan Time! (Ben 10 SI) by Isaiah Jager reviews
Sup, this is Cal. I'm your average Joe except that I died and didn't know till this guy call ROB told me. I can choose a new life to live in any universe. I figured, if I'm 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. (Based on a Ben 10 cyoa, more than 1 crossover)
Crossover - Ben 10 & Dragon Ball Z - Rated: T - English - Adventure - Chapters: 3 - Words: 4,026 - Reviews: 5 - Favs: 17 - Follows: 27 - Updated: 3/11 - Published: 3/4 - Ben T., Gwen T., Max T., OC
Mass Effect 10 Ben Second Chance by benguin reviews
Here is a world for both Ben 10 and mass effects Fans, but basically it like any story where ben world is gone and lives in another universe to move on from the pain
Crossover - Ben 10 & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 12 - Words: 32,244 - Reviews: 24 - Favs: 30 - Follows: 34 - Updated: 3/11 - Published: 2/15 - [Ben T., Miranda L.] Ship, Shepard
The Ultimate Ben 10's First Easter by GhostAlleyCat
Magor and Bel plan to take the Easter Bunny's power, so the Archangel, Michael, asks for Ben's help in saving Easter.
Crossover - Ben 10 & Ultimate Spider-Man - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 2,814 - Favs: 2 - Follows: 2 - Published: 3/11 - [Ben T., Kai Green] [Peter P./Spider Man, M.J Watson] - Complete
Ben 10 A Magical Mishap (Remake Version 20) by Arsenal10 reviews
Same story but a new and improved dialogue.
Crossover - Winx Club & Ben 10 - Rated: K+ - English - Humor/Adventure - Chapters: 7 - Words: 31,667 - Reviews: 6 - Favs: 5 - Follows: 5 - Updated: 3/11 - Published: 2/23 - Stella, Ben T.
Priestess 10 - Christmas Boogaloo by SilverSoulmmc reviews
Yukiko doesn't wish for a lot, but what she does doesn't seem like much to others. All she wants is to celebrate her joint birthday with Ben and Gwen, and to have the Tennysons enjoy their first time in Inaba. Unfortunately, Yukiko is unaware that the holidays are known for opening up old awkward family wounds. Oh, and rouge alien attacks too.
Crossover - Ben 10 & Persona Series - Rated: T - English - Family/Drama - Chapters: 3 - Words: 12,308 - Reviews: 8 - Favs: 28 - Follows: 27 - Updated: 3/10 - Published: 1/16 - Ben T., Gwen T., Max T., Yukiko A.
Gus 12 by BlueKnight-X2 reviews
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 vocation.
Crossover - Ben 10 & Owl House - Rated: T - English - Adventure/Drama - Chapters: 12 - Words: 102,750 - Reviews: 30 - Favs: 14 - Follows: 10 - Updated: 3/9 - Published: 4/26/2023 - Luz N., Eda, Willow, Gus
My Alien Academia by The Incredible Muffin reviews
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.
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Friendship - Chapters: 60 - Words: 551,591 - Reviews: 1870 - Favs: 2,715 - Follows: 2,769 - Updated: 3/9 - Published: 11/26/2019 - Ben T., Izuku M.
Persona 4 Golden Demon by Artzilla406
some say, when you look into the fog, you'll see what you wish to see with ignorance, but if you look pass the fog and into the clearing, you'll be able to move and grow. join Koan as he joins the Detective group within Inaba and solve it's mysterious case of the Midnight Channel and it's murders.
Crossover - Ben 10 & Persona Series - Rated: M - English - Chapters: 1 - Words: 24,079 - Favs: 3 - Follows: 3 - Published: 3/8
The First Second Chance by Dracorex.the.1steBorn reviews
A guy gets reincarnated but it's God,Zeus or Odin he doesn't care what you call him, first time doing it so there will be unexpected things happening.
Crossover - Ben 10 & Anime X-overs - Rated: T - English - Fantasy - Chapters: 1 - Words: 1,813 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 3/8
Bleach: Ultimate Alien Remake by Bigby the Big Bad Wolf reviews
It was a peaceful day in Bellwood and Ben is bored out of his mind, until a mysterious man arrives and sends him to another universe. Landing in the desert sands of Hueco Mundo, Ben meets the mysterious yet charismatic Aizen, who requests his help in a war in exchange for helping Ben get home. What's a hero to do?
Crossover - Bleach & Ben 10 - Rated: T - English - Supernatural/Sci-Fi - Chapters: 27 - Words: 282,527 - Reviews: 800 - Favs: 993 - Follows: 972 - Updated: 3/7 - Published: 6/6/2015 - S. Aizen, T. Harribel, C. Stark, Ben T.
The Avatar's Ultimate Hero by ReximusProductionsYT reviews
In the Gwen 10 Timeline, Gwen's cousin, Ben, was on a routine mission for the Plumbers. Deliver the recently confiscated Ultimatrix that Albedo recreated, along with the Nemetrix, to Azmuth for safe storage. But upon arriving on Galvan Prime, Ben was sucked into a dimensional time portal that sent him to a realm where humanity has learned to bend the elements. Guess it's hero time!
Crossover - Ben 10 & Legend of Korra - Rated: T - English - Sci-Fi/Romance - Chapters: 2 - Words: 7,130 - Reviews: 22 - Favs: 73 - Follows: 86 - Updated: 3/5 - Published: 5/21/2023 - [Ben T., Korra]
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