Transformers Crossovers
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Primus's Blessing by RaisingHeartExelion
Sequel to ATYoS. Stella is forming a mage squad when she receives the news that she is pregnant with Optimus's child. Together with the Autobots, she recruits members to the mage squad during the nine months she is pregnant. What might happen during these months? Find out. RE-POSTED
Crossover - Magical Girl Lyrical Nanoha & Transformers - Rated: T - English - Humor/Family - Chapters: 9 - Words: 36,011 - Favs: 3 - Follows: 2 - Updated: 17h - Published: 7/24 - [OC, Optimus Prime] Raising Heart - Complete
Transformers and Sonic the Hedgehog: The Decepticons Strike Back by T-Rock14
After Sonic finally proposes, things are looking up for the Knothole Freedom Fighters and Autobots. But when Code Red is critically wounded and left fighting for his life, things take a turn for the worst. Little do the Freedom Fighters know that the Decepticons and Robotnik have been planning a new malign plot, one they hope will spell certain doom for the Freedom Fighters...
Crossover - Sonic the Hedgehog & Transformers - Rated: T - English - Sci-Fi/Hurt/Comfort - Chapters: 19 - Words: 62,912 - Follows: 1 - Updated: 7/26 - Published: 6/17 - [Sonic, Sally] Max A., OC
Transformers: Chaos and Harmony by Ben Klaassen reviews
Three-pronged crossover; Sonic, MLP and Transformers. Full description of story in chapter one. Just be ready for some Giant-robot-on-giant-robot violence. Rated T for swearing.
Crossover - Sonic the Hedgehog & Transformers - Rated: T - English - Adventure - Chapters: 11 - Words: 12,086 - Reviews: 3 - Favs: 1 - Follows: 1 - Updated: 7/26 - Published: 6/24 - Sonic, Tails, Optimus Prime, Sideswipe
Cloud Hopping by wolfsrainrules reviews
Jazz dies and the Allspark is destroyed. That is fact. Except Primus decides it's time to interfere with his creations and suddenly everything that was changed into everything that could be. HAPPY BIRTHDAY NORTH. Have the plotbunny that mutated.
Crossover - Katekyo Hitman Reborn! & Transformers - Rated: T - English - Chapters: 1 - Words: 10,512 - Reviews: 6 - Favs: 59 - Follows: 47 - Published: 7/25 - Skull, Arcobaleno, Jazz - Complete
Beyond the Dark Horizon by Jazz's Girl reviews
Skylight Trilogy Book 2 Taken from the world she has come to call home, leaving everything she has come to love behind, Katie tries to reconstruct her live the best she can. As new friends are made and old enemies arise, will she be able to come to terms with the past? Or will the ghosts of Vrons past be more then she can bear?
Crossover - Transformers/Beast Wars & Transformers - Rated: T - English - Adventure/Suspense - Chapters: 25 - Words: 61,130 - Reviews: 91 - Favs: 34 - Follows: 42 - Updated: 7/24 - Published: 1/4 - Optimus Prime, OC, Prowl, Barricade
Auto reinforcements by bladewolfzic
This is a colab story between me and Wingbladeweaver Hikari and Ven call for reinforcements
Crossover - Kingdom Hearts & Transformers - Rated: T - English - Adventure - Chapters: 2 - Words: 2,971 - Updated: 7/24 - Published: 7/19 - Ventus/Ven, OC, OC
Son of Primus by RavenMechanical reviews
Optimus Prime has returned from his search for the creators with no luck. Shortly after his return, he finds a badly damaged Autobot with little to no story about his past, or so he wants him to believe. The Autobot in question, named Stripes, can't, or won't talk about his past. However, the Decepticons have a great interest in him, and that's just the beginning...
Crossover - Transformers & Need for Speed series - Rated: T - English - Drama/Suspense - Chapters: 22 - Words: 16,010 - Reviews: 30 - Favs: 2 - Follows: 3 - Updated: 7/20 - Published: 5/29 - [OC, Nikki] Optimus Prime
Stargate: Those Left Behind (REBOOT) by Neodammarung the Destroyer reviews
It has been three years since the formation of the Compound Alliance, which thrust the forces of N.E.S.T. and Stargate Command together to confront their mutual foes. Yet now, as their enemies gather strength in the shadows, a mysterious signal from Pegasus heralds the return of an old friend and an even older enemy. (Sequel to 'Same Side' by Era Yachi)
Crossover - Stargate: Atlantis & Transformers - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 38,787 - Reviews: 3 - Favs: 4 - Follows: 3 - Updated: 7/18 - Published: 2/23 - John S., Aiden F., Optimus Prime, Shockwave
Sparks of Magic: Riddikulus of Wizards by ChocoholicDiabetic1412 reviews
Short chapters of what happens in between Sparks of Magic. Be prepared for foolish moments with both of the twins, some Animagus moments and a proposal. If you have not read Sparks of Magic, read it first or you will be confused. Hope you enjoy and rated T because there will be some violence involved as this is Transformers and Harry Potter.
Crossover - Harry Potter & Transformers - Rated: T - English - Humor - Chapters: 2 - Words: 5,302 - Reviews: 9 - Favs: 38 - Follows: 38 - Updated: 7/17 - Published: 1/14
Bioformers 2, Part 1: Rise of the Insidious by Biomarvel740 reviews
When an ancient Makutacon general rises to take revenge on all of Bioniclekind, it's up to Paradox, Green, and the others to save the world once more. Along with this, they will learn a bit more about the reasons of the exile and with the stakes raised higher than ever, will they be able to prevent the continuation of Insidious's dark legacy?
Crossover - Bionicle & Transformers - Rated: K+ - English - Spiritual/Adventure - Chapters: 15 - Words: 97,364 - Reviews: 3 - Favs: 1 - Follows: 2 - Updated: 7/15 - Published: 3/4
Transformer and Vampire by masterwill117 reviews
Fates are forever intertwined when an Autobot Spy, a Vampire, and a former Mercenary Solider unexpectedly come together to find the great Autobot leader Optimus Prime and restore order to Earth.
Crossover - Rosario + Vampire & Transformers - Rated: T - English - Romance/Adventure - Chapters: 17 - Words: 58,754 - Reviews: 3 - Favs: 5 - Follows: 5 - Updated: 7/11 - Published: 1/19
The Curious Demigod's Family by angelslaugh reviews
"I don't care what it takes. I will always fight for my family." Jayla Witwicky. All of her adventures have been compiled into one long story-a story about how one young woman rose from the ashes and found a family. T for some bad language.
Crossover - Percy Jackson and the Olympians & Transformers - Rated: T - English - Chapters: 27 - Words: 30,960 - Reviews: 9 - Favs: 17 - Follows: 10 - Updated: 7/10 - Published: 4/17/2015
Harry Potter: LifeSpark by LadyLament reviews
Set during the end of the 4th book, Harry is left to remember the horrible memory of Cedric's death. Hoping to occupy his mind he sets to fix the broken toys piled in his room. He originally set out to fix toys and forget, he didn't know what to do when the toys he fixes start calling him Maker. Inspired by Ie-maru's story go check it out. To old viewers changes ch3 onward FYI.
Crossover - Harry Potter & Transformers - Rated: T - English - Chapters: 11 - Words: 20,220 - Reviews: 549 - Favs: 1,277 - Follows: 1,620 - Updated: 7/5 - Published: 11/16/2014
Rise of the Predacons by KrissyKat91 reviews
AU When a freak electrical storm triggers the residual AllSpark energy within him, Sam Witwicky finds himself stuck in a body not his own. However, the form the AllSpark has chosen to gift him with is... interesting, to say the least.
Crossover - Transformers/Beast Wars & Transformers - Rated: K+ - English - Sci-Fi - Chapters: 8 - Words: 8,619 - Reviews: 69 - Favs: 169 - Follows: 195 - Updated: 7/4 - Published: 3/15/2014 - Sam W.
Six Times The Machine by Zaraen reviews
She was ready for her final stand. Ready to take as many as those alien bastards down as she could. Only, things didn't turn out how she expected. Death didn't claim her and now she's on the one planet they all swore to protect, but there's one difference. Someone else found it and now she's an alien to her own heritage. A machine in the eyes of this Humanity. Then there's that AI.
Crossover - Halo & Transformers - Rated: T - English - Adventure - Chapters: 20 - Words: 139,362 - Reviews: 171 - Favs: 195 - Follows: 254 - Updated: 7/3 - Published: 8/2/2014 - SPARTAN-B312/Noble Six, W. Lennox, Optimus Prime
Copy-Paste Game by dreamaholicme reviews
I was surfing through my readers' profiles when I found this game. It was simple, answer it then post it... I didn't think that it would take me to that universe and make me experience those! What the heck! How many questions were there? How long will I stay here! My world had just gone tumbling off and into the servos of my favorite mechs and femmes.
Crossover - Transformers/Beast Wars & Transformers - Rated: T - English - Adventure/Humor - Chapters: 5 - Words: 8,493 - Reviews: 4 - Favs: 5 - Follows: 7 - Updated: 7/3 - Published: 11/24/2015
An Alien War on Earth by RaisingHeartExelion reviews
Being born with a mysterious power didn't make Stella's life easy. After her parents died, she moved in to her mother's younger cousin's family in the US to start a new life. One day, Sam bought a car that turned out to be more than meets the eye. And Stella found out her power came from an alien source. RE-POSTED
Crossover - Magical Girl Lyrical Nanoha & Transformers - Rated: T - English - Supernatural/Friendship - Chapters: 10 - Words: 39,040 - Reviews: 2 - Favs: 10 - Follows: 6 - Updated: 7/3 - Published: 7/1 - [OC, Optimus Prime] Raising Heart, Sam W. - Complete
Life Notes of The Adopted Daughter of Tony Stark by Dragon-Child of Lightning reviews
When Joyceann, a supposed mutant, is swept from her street life in to the world of S.H.I.E.l.D. and NEST, her life is changed for the better when Tony Stark claims her as a long lost adopted daughter. But when secrets & surprises are basically around every corner, can Joyceann find out who she really is, & what she is? (1st story in Life Notes of a Storm Tamer series; OCs are mine)
Crossover - Transformers & Avengers - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 10,385 - Reviews: 1 - Favs: 8 - Follows: 6 - Updated: 7/2 - Published: 6/24/2014 - Bumblebee, OC, Iron Man/Tony S., Loki
Lost Penny by IceWarrior13 reviews
Transformers: Prime & RWBY. What if Penny Polendina wasn't destroyed that night in the arena? What if a green portal opened, and she fell through time and space into a little town called Jasper, Nevada? I don't own TFP or RWBY. More RWBY characters to be added.
Crossover - Transformers & RWBY - Rated: T - English - Adventure/Humor - Chapters: 22 - Words: 41,653 - Reviews: 106 - Favs: 100 - Follows: 100 - Updated: 6/26 - Published: 3/23 - Ratchet, Optimus Prime, Penny
I will not say i am in love by ambernlucas95 reviews
I have to hate him its the only way to save my sole but i can't help it i have fallen in love with a con and his name is Megatron. {I only own Amber and her siblings no one else the Carpathian belong to Christine Feehan a great Author who's book I greatly love, Lastat is from Queen of the Dammed, and Ade is from Hellboy.}
Crossover - Transformers & Twilight - Rated: T - English - Romance/Adventure - Chapters: 20 - Words: 17,846 - Reviews: 2 - Favs: 1 - Follows: 1 - Updated: 6/21 - Published: 2/9 - [Megatron, OC] - Complete
Retribution Of Rahab by BlackbloodedSoul2
With the Fallen threatening to rise once again, there is little to be done, hope is dwindling. But with the help of Rahab and the Autobots, Earth might just stand a chance. Second book to Rahab: the Angel of death. I think I should also say, a lot happened between the two books, I may or may not create an in between story, just focusing on Ra and her two years of life on the run
Crossover - Maximum Ride & Transformers - Rated: T - English - Chapters: 2 - Words: 369 - Favs: 1 - Follows: 1 - Published: 6/20
El chat de los amigos UNIDOS by RossKousukePrime reviews
Mary, le da a cada uno de sus amigos, un teléfono super inteligente, pero por medio de ese, todo empiezan a chatear, pero se descubrirá muchas cosas, amistades nuevas, revelaciones, confesiones, triángulos amorosos, harem reverso, perversiones, albures, chistes, drama, entre otras muchas cosas más XD P.D. Crossover de animes, videojuegos y películas
Crossover - Transformers & Avengers - Rated: K+ - Spanish - Friendship/Parody - Chapters: 10 - Words: 6,426 - Reviews: 7 - Updated: 6/19 - Published: 11/9/2014 - Bumblebee, OC, Captain America/Steve R., Hawkeye/Clint B.
Equestria Girls: Friendship Transformed by GO4theStars reviews
Sunset Shimmer and her friends are going to graduate soon. Everyone else is going their separate ways, but Sunset doesn't know what will happen to her. But after meeting a new student, who has a secret about his car, she and her friends are thrusted into a war between two races of alien robots. As she helps the good robots and her new friend, she soon learns a more powerful magic.
Crossover - My Little Pony & Transformers - Rated: T - English - Chapters: 3 - Words: 8,668 - Reviews: 3 - Favs: 5 - Follows: 5 - Updated: 6/19 - Published: 6/17 - [Sunset Shimmer, OC] Bumblebee, Optimus Prime
Sparks of Magic by ChocoholicDiabetic1412 reviews
Harry, betrayed by members of his family leaves Britain and moves to America along with Sirius, Remus, Fred and George just in time to join an alien war. Rated T for violence and some Dumbledore/Molly/Ron/Ginny bashing. Romance will be way later in the story with pairings already decided.
Crossover - Harry Potter & Transformers - Rated: T - English - Fantasy/Adventure - Chapters: 14 - Words: 101,483 - Reviews: 222 - Favs: 719 - Follows: 870 - Updated: 6/13 - Published: 8/1/2015 - Harry P., George W., Fred W., Optimus Prime
Saving The World: Sunstreaker and Sideswipe by Wild Birdie reviews
Bumblebee's spark-bonded was killed by Deceptions after he left to go to Earth with Optimus's group. His daughter was just a new-spark and was on the ship her mom was killed on. She arrived on earth and was immediately found by her father and the autobots. Over the years she befriends all the autobots and even gains some decepticon friends. She finds love and family. r & r please!
Crossover - Transformers/Beast Wars & Transformers - Rated: T - English - Romance/Adventure - Chapters: 3 - Words: 786 - Reviews: 5 - Favs: 17 - Follows: 15 - Updated: 6/13 - Published: 7/21/2013 - Sideswipe, Sunstreaker, Bumblebee
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