Sonic the Hedgehog and Transformers Crossovers
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Transformers and Sonic the Hedgehog: The Defoliator Crisis by T-Rock14 reviews
On a routine raid, the team discover a terrifying new weapon that Dr Robotnik is developing. With this dark threat looming, the Autobots and the Freedom Fighters face a race against time to prevent Robotnik's malign scheme from coming to fruition.
Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 25,260 - Reviews: 5 - Favs: 1 - Updated: 14h - Published: 7/11 - [Sonic, Sally] Ironhide, OC
Transformers and Sonic the Hedgehog: New Friends, New Enemies by T-Rock14 reviews
When Autobot Special Operative Code Red is assigned to help liberate the planet Mobius from the evil Doctor Robotnik, Little does he realise exactly what he is getting himself into.
Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 21,683 - Reviews: 11 - Updated: 5/29 - Published: 3/28 - [Sonic, Sally] Ironhide, OC
a hedgehog's revenge by mkturbo02 reviews
seelkadoom kills sonic's and his sisters' parents and he wants revenge
Rated: K - English - Friendship/Hurt/Comfort - Chapters: 3 - Words: 1,003 - Reviews: 4 - Updated: 5/1 - Published: 4/24
Sonic Transformers by superkath547 reviews
Sonic, Tails, and Knuckles team up with the now revived Optimus Prime and the Autobots to stop Eggman, Megatron, and the Decepticons from in an all new war. As they earn new powers and allies to retrieve a dispersed Allspark and the powerful seven Chaos Emeralds, Sonic, Tails and Knuckles learn that, like the Autobots, there is more to themselves than meets the eye.
Rated: K+ - English - Adventure/Sci-Fi - Chapters: 3 - Words: 1,911 - Reviews: 6 - Favs: 2 - Follows: 1 - Updated: 2/20 - Published: 11/8/2014 - Sonic, Optimus Prime
Return of the lost soldier by canikostar99 reviews
"Is this truly how far he will go in his lust for power? To try and resurrect his armies?" "Yes, but it may be worse than that. He may go as far as to try to recreate the cube." "The cube is older than Cybertron itself. There is no way he could" "He has found a new power. One that may make it possible. And now, he drags a new planet and its people into the crossfire."
Rated: T - English - Chapters: 3 - Words: 3,034 - Reviews: 2 - Follows: 1 - Updated: 7/30/2014 - Published: 5/30/2014
The Ordonian War by Quilava Flare reviews
In a time when autobots were plentiful, a great war outbroke over control of the allspark, a great energy source. But only two sides of the story are told. A great bot named Ordonitron leads the neutral bots to freedom on a peaceful planet. But this planet has a secret lots of power hungry people would love to get their hands on...
Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 5,825 - Reviews: 9 - Favs: 7 - Follows: 5 - Updated: 5/31/2014 - Published: 11/18/2012 - Sonic