Transformers Crossovers
Filters
1.1K | « Prev Page 1 2 3 4 5 12 .. Last Next »

The Spark of Something Forbidden by Denim Jean
Disaster strikes in LA. In a fight against the Decepticons, Optimus bumps into Fio by accident. She's a mutant who saves him. The Autobots face a new threat, Magneto. The Autobots meet Prof. Xavier and the X-Men (the new asset Fio among them), and they realise Megatron and Magneto have joined forces. Our heros will need to team up to survive. But Fio's got a huge problem... OP/OC
Crossover - X-Men & Transformers - Rated: M - English - Romance/Hurt/Comfort - Chapters: 3 - Words: 22,663 - Published: 12/20/2019 - Charles X./Professor X, James H./Wolverine/Logan, OC, Optimus Prime
Drive by uoduck reviews
Five Times Harry Slept in Optimus Prime's Cab and One Time Optimus fell asleep on Harry. Pre-slash.
Crossover - Harry Potter & Transformers - Rated: M - English - Sci-Fi/Drama - Chapters: 6 - Words: 11,767 - Reviews: 89 - Favs: 605 - Follows: 615 - Updated: 12/15/2019 - Published: 5/15/2019 - Harry P., Optimus Prime - Complete
That's some dangerous prime steak by gypseyprime
The Rift cracks open again, but this time it lets through something unlike ever before. It's,, a robot? *EXTREME CRACK DON'T READ*
Crossover - Transformers & Pacific Rim - Rated: T - English - Humor/Parody - Chapters: 1 - Words: 146 - Favs: 1 - Published: 12/11/2019 - Optimus Prime, Raleigh B., Mako M., Gipsy Danger - Complete
Shots by BlueStar19 reviews
Summary inside. Rated T and M.
Crossover - Transformers/Beast Wars & Transformers - Rated: T - English - Romance/Hurt/Comfort - Chapters: 9 - Words: 20,482 - Reviews: 3 - Favs: 2 - Follows: 1 - Published: 12/3/2019
Steel and Hellfire: Mechagodzilla's Vengeance by meliaravonfuchs reviews
It has been a year since the Events of Thanos' Snap, Meliara Von Fuchs is alone. Her father had been dusted and she was left with her friend and her lynx. She didn't know what to do, except. She knew that there was very little she could do as an individual to get revenge. Unless she decided to get help.
Crossover - Godzilla & Transformers - Rated: T - English - Fantasy/Hurt/Comfort - Chapters: 3 - Words: 3,524 - Reviews: 1 - Favs: 4 - Follows: 1 - Updated: 12/3/2019 - Published: 11/26/2019
Crossout: A Legacy Born by Cyanosis the Numeric Dragonair
Something I came up with while playing Crossout on 11/20/19. Crossout is a game where you start off with a basic pickup truck and upgrade your vehicle until the stage where you can have a titanic armored personnel carrier, or as the game calls it, a Leviathan. Kinda like Mad Max. Summary: Nexus failed to make a portal, it exploded, and now he's in the Blood Rocks.
Crossover - Game X-overs & Transformers - Rated: M - English - Adventure/Humor - Chapters: 5 - Words: 2,037 - Updated: 11/25/2019 - Published: 11/20/2019
The Voyagers in - Hong Kong by RevvEmUp reviews
Ninth installation of The Voyagers. The Voyagers are on another routine mission, this time to Hong Kong. Because of Springer and Fallback's injuries, they are unable to transport the team. As a result, Minerva has employed the help of the Rescue Bots!
Crossover - Transformers & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 8,011 - Reviews: 22 - Updated: 11/25/2019 - Published: 11/4/2019 - Finn, Jake, Simon P. - Complete
How to train your dragon to survive a cybertron war by The Cowardly Christian reviews
Fall of Cybertron AU! The tranformers have crashed into the archipelego and have dragged their war with them! Will this change the fate of Hiccup and his friends, your fraking right it will! Major AU! Inspired by coyoteprime1100.
Crossover - Transformers & How to Train Your Dragon - Rated: T - English - Sci-Fi/Supernatural - Chapters: 1 - Words: 1,823 - Reviews: 3 - Favs: 5 - Follows: 4 - Published: 11/11/2019 - Optimus Prime, Hiccup
Let Her Go by Ironhide's Girl 103
King is stranded in Manganese Mountains, a storm is brewing, a storm that will bring cold air, snow and even death. Most inhabitants wouldn't dare venture out into those mountains unless one knew what they were doing. For King it was to protect a small, unprotected innocent sparkling from falling into the grabs of Megatron.
Crossover - Brave Saga & Transformers - Rated: M - English - Family/Adventure - Chapters: 3 - Words: 4,485 - Published: 11/9/2019
Five Worlds Wars: The Machine Invasion by darkmachines reviews
One of the SternRitter has taken over the Capital of Fiore and taken Princess Hisui as prisoner. Only the 4th and Defense Divisions are left to free the Capital and Princess against the powerful SternRitter M and his army of Machines and Robots.
Crossover - Bleach & Transformers - Rated: T - English - Adventure/Tragedy - Chapters: 6 - Words: 34,615 - Reviews: 31 - Favs: 12 - Follows: 9 - Updated: 11/8/2019 - Published: 6/17/2017 - Vandenreich, OC, Barricade, Blackout
Rules for Jazzy by Alalaya2
Jazzy is a friend to the Allspark in the Fan to Tran AU when she was little her genius put her under a lot of pressure so now she acts out the People of NEST have made a set of rules for her to follow so her brand of craziness doesn't drive them up the wall. And hopefully stop her from braking the fourth wall but they don't believe it will after all she is the Angle of Chaos.
Crossover - Cartoon X-overs & Transformers - Rated: T - English - Humor/Adventure - Chapters: 3 - Words: 4,673 - Favs: 5 - Follows: 5 - Updated: 10/28/2019 - Published: 1/14/2014 - OC, Que/Wheeljack
Till All Are One by Wacko12 reviews
With Cybertron restored, the Autobots believed they can take a breather. But the threat of Unicron still remains. Worse still, old and new enemies unite that threaten the entire universe. The Autobots and their human will need the aid of other heroes as well as unexpected allies to face this approaching doom. For they must work together to survive, or fall one by one.
Crossover - Transformers & Avengers - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 30,518 - Reviews: 134 - Favs: 77 - Follows: 77 - Updated: 10/23/2019 - Published: 11/22/2018
The Voyagers in - Mexico by RevvEmUp reviews
Eighth installation of The Voyagers, updates Mondays. After a relaxing week in Paris, The Voyagers return to Ooo, only to be called to action, this time in Mexico. They soon find a relic of the past within the cemetery of a city; one of the Thirteen Primes.
Crossover - Transformers & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 8,011 - Reviews: 23 - Updated: 10/21/2019 - Published: 9/29/2019 - Optimus Prime, Finn, Jake, Simon P. - Complete
Mass Effect: The Transformation Effect by ren1234 reviews
A race that had evolved from war and metal, how would the council deal with an alliance of two races, one which is notorious for its adaptability and unpredictability and the other that goes against everything that they believed in for such a long time?
Crossover - Mass Effect & Transformers - Rated: T - English - Chapters: 4 - Words: 7,444 - Reviews: 21 - Favs: 109 - Follows: 168 - Updated: 10/20/2019 - Published: 10/17/2019
From the Stars by KrissyKat91 reviews
Instead of Smallville, Kansas, Kal-El's escape rocket lands in a little Nevada town called Tranquility. ABANDONED.
Crossover - Superman & Transformers - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 6 - Words: 6,884 - Reviews: 16 - Favs: 20 - Follows: 29 - Updated: 10/7/2019 - Published: 3/10/2014 - Clark K./Kal-El/Superman, Optimus Prime - Complete
Lara's American Adventure by Maethoriel Artemis reviews
17 year old Lara Croft is about to embark on a year-long trip to the United States. It quickly proves to be an adventure never to forget when she inadvertently gets caught in the middle between the Autobots and the Decepticons thanks to her ancestors glasses and a shape shifting talisman she found in Peru.
Crossover - Tomb Raider & Transformers - Rated: T - English - Family/Friendship - Chapters: 13 - Words: 34,634 - Reviews: 18 - Favs: 36 - Follows: 25 - Updated: 10/7/2019 - Published: 8/6/2019 - Lara Croft, Bumblebee, Optimus Prime - Complete
Demons of Flesh and Metal Revival by BreAnna M. Higgins
Being invited to work with a secretive government agency is a privilege, but a dangerous one at that. For mechanic and tech guru Bonny Moore it gets a lot harder when her new coworkers are Cybertronian behemoths that she's supposed to help repair and keep in check. Revisiting Demons of Flesh and Metal.
Crossover - Transformers & Transformers/Beast Wars - Rated: M - English - Tragedy/Romance - Chapters: 2 - Words: 6,441 - Favs: 5 - Follows: 5 - Updated: 10/4/2019 - Published: 10/2/2019 - [Ratchet, OC] [Barricade, OC]
Blood isn't Always True Family by AmaltheaLuchiaAizen reviews
When Sam was taken to Hoover Dam by Sector 7, he NEVER expected to find his missing 13 year old cousin being held and used as a test subject or that she was able to form a parental bond that defied even what Gods thought was capable with the other living test subject, NBE-1 AKA Megatron. the end of Mission City takes a strange turn but proves to be for the best for all involved. AU
Crossover - Harry Potter & Transformers - Rated: T - English - Family/Fantasy - Chapters: 4 - Words: 13,862 - Reviews: 128 - Favs: 875 - Follows: 855 - Updated: 10/4/2019 - Published: 5/20/2016
Sunstreaker Chronicles by masterwill117
(Spinoff to Transformer and Vampire) After being in stasis for a long time Sunstreaker decides to have adventures of his own, joined by his sidekicks, adventure awaits for Sunstreaker and his friends as they travel across the North American continent.
Crossover - Rosario + Vampire & Transformers - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 12,334 - Favs: 1 - Follows: 1 - Updated: 9/29/2019 - Published: 10/5/2018
Sparks Among the Stars by Kenya Starflight reviews
The Allspark has found its way into humanity's hands... but not the humans of Earth. Instead, Optimus Prime and Megatron's desperate race to find the artifact brings their war to a galaxy far, far away...
Crossover - Star Wars & Transformers - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 21 - Words: 87,948 - Reviews: 222 - Favs: 198 - Follows: 242 - Updated: 9/23/2019 - Published: 3/1/2017 - Luke S., Darth Vader, Optimus Prime, Megatron
Transformers: Battlemask - the Rewrite by Cyber Alpha reviews
Fuchsia Prime was trained in a different universe from her own. Then, she went with the Daleks to save her second in command of the team, Alphabots; lost her memories; doing unspeakable things under the Dalek's control. And when she finally escapes and gets back to her universe, she remembers most of her life. Follow her adventure!
Crossover - Doctor Who & Transformers - Rated: T - English - Hurt/Comfort/Family - Chapters: 20 - Words: 30,015 - Reviews: 4 - Follows: 2 - Updated: 9/22/2019 - Published: 5/9/2019 - Daleks, Optimus Prime, OC
The Voyagers in - Paris by RevvEmUp reviews
Seventh installation of The Voyagers, updates Mondays. The Voyagers are brought to the city of Paris by Minerva to relax as a reward for all their hard work. Unfortunately, danger follows them in the form of two villains seeking treasure!
Crossover - Transformers & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 8,011 - Reviews: 20 - Updated: 9/16/2019 - Published: 8/26/2019 - Finn, Jake, Simon P. - Complete
mighty morphin power rangers and the crisis on cyberton by C.D.Helt reviews
another crisis has begun between the universe of cybertron and angel grove. why is optimus prime in angel grove? what does megatron have against zordon eltar? all this will be answered.
Crossover - Power Rangers & Transformers - Rated: T - English - Adventure/Drama - Chapters: 3 - Words: 856 - Reviews: 1 - Favs: 2 - Follows: 2 - Updated: 8/31/2019 - Published: 8/22/2019 - Optimus Prime, Megatron, Jason L. S., Tommy O.
The Will of the Transformers III by TheVoidHunter250 reviews
Sequel to the Second, the Allies race the Decepticons for the moon only to discover the Ark. However, Optimus' old commander Sentinel Prime, betrays them and aligns with the Decepticons to save their race. Now Jane and her team will face both the Decepticons and within the government as they prepare for their toughest battles they will face before. Violence, Language,
Crossover - Green Lantern & Transformers - Rated: T - English - Adventure/Romance - Chapters: 13 - Words: 28,548 - Reviews: 22 - Favs: 15 - Follows: 16 - Updated: 8/25/2019 - Published: 9/11/2018 - [OC, Optimus Prime] Megatron, Sentinel Prime - Complete
Perfectly Alien (rewritten) by SignatureDish reviews
Harry had only wanted to get the Hoover Dam tour over with, he didn't know what he did wrong. Why did that mysterious cube turn him into a robot? Had everyone known there was a huge laboratory underneath the dam? And what was going to happen to him now? Poor Harry felt lost in his little Sector Seven cell. But it wasn't all bad, at least he had Lord Megatron there to protect him.
Crossover - Harry Potter & Transformers - Rated: T - English - Hurt/Comfort/Family - Chapters: 11 - Words: 104,251 - Reviews: 774 - Favs: 2,601 - Follows: 3,195 - Updated: 8/21/2019 - Published: 11/8/2016 - Harry P., Megatron
1.1K | « Prev Page 1 2 3 4 5 12 .. Last Next »