Months after Chain of Generations, Sonic and Tails investigate a mysterious Interstellar Amusement Park, only to find it swarming with Heartless. Joined by a powerful new ally, they must save the captured Wisps and stop Eggman, seemingly back from the dead, before his sinister plan engulfs everything in darkness. Part of the KH x Sonic Blue Blur story arc.

(Sonic Frontiers Sequel) At age 24, Mytyl Kamizono was prepared for another day of college. At age 85, Mytyl Kamizono went to work in one of Eggman's factories. At age 14, Mytyl Kamizono received memories of hell on earth, courtesy of a corrupted gman. with no allies save for these two aliens and their AI, can she help Shadow and Rouge stop Sumeragi and save the world?

A re-write of my series "Harmonic Chaos Chronicles"; Follow the adventures of a red hedgehog known as Rage after they are sent to Equestria with Sonic following an encounter with Eggman and all of the antics that follow!

Thought-provoking. Ground Breaking. Extremely Obvious. The Sequel to RWBY The Hedgehog is here! Dr. Eggman is back to take over Westside Island and has kidnapped the people from AGES! Sonic, Team RWBY and the others are here and this time, Team JNPR will join the adventure as is new people as well! Double the People, Double the Zones, Double the Adventure. Are you up 2 it?

Sonic, recovering from trauma, along with Shadow and Silver, are dragged into Equestria, where they encounter mysteries upon mysteries connecting their world to this new place. They meet the Mane 6, and they all promise to help them get back home. All the while a looming darkness threatens everything. - CW: Blood, Swearing, Gore, Death-

During a incident with eggman Metal sonic and Amy are dropped into a world of Heroes and villains! What sort of adventure will they get into here? And will they ever return home?

After receiving information regarding the mysterious Terrans, the Knothole Freedom Fighters venture to the heart of the Efrika in the hopes of recruiting them in the ongoing war against the Eggman Empire. Blends elements from Sonic X, Sonic Boom, Archie Sonic, and IDW Sonic.

Sonic, Shadow, Silver, Knuckles and Gadget have been kidnapped and forced into competing in challenges held by a mysterious person. Will they suceed? Find out!

Pre-ME1 post-Frontiers Xover, in which the Sonic version of Earth replaces ME Earth. A Batarian planet suddenly turns invisible, and things only get weirder from there. That poor STG agent won't know what hit him, that's for sure. And neither will the rest of the galaxy - once Sonic and Eggman get there. Crossposted on Spacebattles and AO3. Rating may change. NOW ON TV TROPES!

After an accident with the Chaos Emeralds, Sonic is transported to another dimension, in a world where Demons and Gods are common. Befriending the Occult Research Club, it's up to them to help Sonic recover the Emeralds and send him home... before power-hungry demons or a certain egg-man finds them first... (Cover Art by Penguin SuperSaiyanGod)

Shadow uses a chaos emerald to accidentally transport himself to Equestria. During his time there, Shadow writes letters to his deceased friend and sister about a certain pink pony. Shadow the Hedgehog thought he could never find someone to love as much as her. But, it seems she has sent this person to him. Uh, pony.

Captain Toad farts his way past cool adventuring rump through Sonic's world.

Sonic would much rather not go to school, but she doesn't have much a choice, not while Eggman keeps hunting her down in order to fully control her (perhaps a bit too overpowered) Quirk. At very least, she'll get to enjoy the slower things in life with her new classmates. Maybe even her rivalry with the Doc's number one lackey won't be as much of a pain now.

Exactly as the title says. This is a oneshot that has Jenny from My Life As A Teenage Robot face off against E-123 Omega from Sonic the Hedgehog.

Um acidente no laboratório do Eegman que descobriu um poder de uma outra dimensão chamada "alquimia", mas o Sonic junto com os seus amigos tentam impedir ele. Porém quando Tails tenta desativar o portal de Eegman ocorreu um curto circuito que fez com que todos que estavam perto do portal fossem puxados e levados para Amestris, onde Sonic conhece os irmãos Elric .

After a failed attempt to take out the heroes at Crocodile Isle. Doctor Eggman has came up with a brilliant plan to use the seven Chaos Emeralds along with Bowser, King Dedede, Doctor Wily and one of the new villains name Megatron for world domination. Will the heroes be able to put a stop to Doctor Eggman's evil plan?

Powered with incredible speed, Sonic embraces his new home on Earth. That is until he accidently knocks out the power grid throughout half of the state, gaining the attention of the evil genius Dr. Robotnik. With the help of his new and colorful friends, they team up to defend from the mad scientist from using Sonic's powers for world domination.

After settling in Ponyville, Sonic is eager to prove he has what it takes to be a true hero. His test comes in when Dr. Robotnik returns with a new partner, Knuckles. Sonic teams up with his own sidekick, Tails, and with the Crusaders joining along, they embark on a globe trotting journey to find a mystical emerald before it falls into the wrong hands.

It's been quite peaceful for our favorite Freedom Fighter, Sonic The Hedgehog. Until a being of pure chaos has been resurrected once again and attempts to take over the multiverse and caused the Chaos Emeralds to scatter across different worlds. Now its up to Sonic and with the help of heroes from other worlds to collect the Emeralds and save the multiverse before its too late.

Casting a Shadow of doubt onto himself leads the ultimate lifeform hedgehog to be asking a particular question while getting himself into a Pokemon battle.

Tails and Cream babysit Muffin, but she gets grounded for causing a mess in the kitchen...

Strange things keep warping in and out for these out of place heroes.

When Luigi Lucheni ends in mobius and kidnapping rouge, its up to Elisabeth, Knuckles, Sonic, and Silver to save

Metal Sonic ends up on another planet named "Copper 9", with no memory on how he got here. Metal makes new allies and joins them as they discover the secrets of this "Absolute Solver". And what are these strange visions he's getting?

Shadow ends up going through the Tooie worlds with there being a radical twist that makes him feel like he's on a highway.