One Big Adventure

Reads 4,898
Votes 193
Parts 19
Time 3h 20m

Reads 4,898
Votes 193
Parts 19
Time 3h 20m

1 new part

Meet Serena The Hedgehog who is Sonic, Manic and Sonia's cousin while being the brains of the group. After being partly roboticized she uses her new skills to fight Robotnik and search for Queen AleenaAll Rights Reserved

Table of contents

19 parts

#42robots

Content Guidelines

You may also like

It's a real Scourge of emotions [Fleetourge] by LizzyBoop007

Scourge can't catch a break Fiona tries to capture him after he finds out she was cheating on him, Sonic is at war with his father and Fleetway for helping Scourge. Despite all that he finds himself entangled in a love story that will change his life for the better

Sonic Underground: The Truth Reveals ~Completed~ by CogaPlush

This will be the Prequel/Sequel to "The Final Victory" by AnyokaDyolf, please read it! Tails, every Sonic has to have a Tails, right? Well, in Sonic Underground, Tails doesn't exist, right? Who really told the Oracle that Sonic was ready to meet his siblings? Who really told the Oracle that Sonic needed to connect to them with music? Who really foretells everything that is going on? Was there really a Tails in this universe? If so, where is he? What happened to him? Why is't he with Sonic? Trailer -------------- Narrator: Who is the most important character in every Sonicverce? Tails, without him, who knows what would have happened. Sonic Underground? Tails never happened, replaced with sibling, or is he? -- Sonic is running to the Robotnik base from Sonic 2 on the Game Gear with the chaos emeralds and runs to a room -- "ROBOTNIK!" Sonic shouts -- They made a deal, Sonic brings the emeralds, he frees his best friend ... ... ... ... ... ... ... ... ... ... ... ... He was one emerald short

No Longer Human (Sequal To Only Human) by ShallotStudioz

[NOT COMPLETED] After the events of Hedgehog Havoc, the Freedom Fighters and the rest of New Mobotropolis are still grieving over Y/n's death. However, they finally win their years long war after defeating Dr. Ivo "Eggman" Robotnik. Unfortunately, a new evil forces rises to take the place of the Eggman Empire. And with the help of a new foe, they become an increasingly worse enemy than Eggman ever was. However, this new enemy has a closer connection to the Freedom Fighters than anyone realizes.

The Ultimate Lifeforms by HannaCleveland

It's been a week since Solaris was defeated. Sonic and Shadow are 'brothers' now and Shadow has moved in with him and Tails. In his quest to uncover the rest of his past, Shadow is forced to work for Eggman to obtain the pages to Professor Gerald Robotnik's journal from him. Receiving a few of the pages, Shadow makes a shocking discovery connecting him and Sonic. It seemed they were even closer and more similar than previously thought. This is a SEQUEL. If you haven't read the first story, Return to Robotropolis, I suggest you do. I originally posted this story on FanFiction.Net.

sonic boom x sonic underground by ALCPpro

this story is based on the sonic boom and underground universes it includes the next ships: sonamy, creamails, knuckuge, silvase, manicks(manic x sticks) and shadonia(shadow x sonia). You have been warned ALL CHARACTERS BELONG TO SEGA pd: this is our first story so please if you coment something than please be possitive and if its not then be something to help with the book, please and thank you, and Good Bye haters

My Sonic Underground [Moved To AO3] by PhoenixGirl26

Same storyline as Sonic Underground except for one detail. They're not triplets, they're quadruplets! Dr. Robotnik has captured their youngest sister, Ambrosia, Amber for short. Using her as bait, he informs them that at the end of the week, he'll Robotisize her. Terrified at the prospect of losing their sister before they've even found their mother; the three siblings come up with a rescue plan...

Sonia The Hedgehog (Genderbend Insert) by Silcat682

The world needed a hero, it got a hedgehog. Powered with incredible speed, Sonia embraces her new home on Earth, until she accidentally knocks out the power grid, sparking the attention of uncool evil genius Dr. Robotnik. Now, it's supervillain vs. supersonia in an all-out race across the globe to stop Robotnik from using Sonia's unique power to achieve world domination. I don't own the movie, it all goes to SEGA.

The son of eggman: The final horizon (Female sonic harem X male son of eggman) by Theswankyseal

(This story is a sequel to the story: The son of eggman) Months have passed since the black arms invasion and the death of black doom and of Y/N robotnik the brave hero who gave his life to protect those he loved. Sonia and the others struggle to move on having lost the boy so close to their heart. But as one tragedy ends another looms across the horizon. Sonia and her friends must once again band together to protect the world from an ancient threat that has remained hidden on Kronos island for centuries. Get ready for a journey like no other where the stakes have never been higher, where friendships are tested and where hero's rise from the grave.

Katia, a young white, ginger, and black kitten, accidentally causing a massive power outage after being called a burden. Her power reaches all the way out to the planet, Mobius. Drawing the attention of Sonic, Tails, and Knuckles. They learn that a large stone like Emerald that originates from Mobius has been found. the Phantom Emerald. Which has the ability to turn thoughts into reality. But they aren't the only ones tracking the source. The evil tyrant roboticist, Dr. Robotnik, back from the Swamp planet after the Death Egg crash in "Sonic and Knuckles", his Imperial Badniks and their allies the Dark Echidna Legion start building a new Death Egg and round up Katia's family and friends. It is now a race against time to prevent Dr. Robotnik from enslaving Earth and Mobius.

RWBY: Sonic the Hedgehog Sonic the Hedgehog is not safe. Everyone is out to get him. The only person on his side is Weiss Schnee, heiress to the Schnee Dust Company. She is not the best company to have. Together they must recover Sonic's rings of power so he can escape to the mushroom planet. But to do that, they'll have to outrun the evil Dr. Robotnik and his army of robots. Fortunately for Sonic, outrunning people is what he does best.

It's a real Scourge of emotions [Fleetourge]

Scourge can't catch a break Fiona tries to capture him after he finds out she was cheating on him, Sonic is at war with his father and Fleetway for helping Scourge. Despite all that he finds himself entangled in a love story that will change his life for the better

More details