Sonic Underground Crossovers
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King Sonic by jacquisup reviews
After defeating Robotnik with Sonia and Manic they get control of home again. But there's one small part of Sonic knowing he would find another place to steal so he leaves to defeat him for good. Two years later he gets a letter from someone with a problem. What will happen?
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: T - English - Family/Friendship - Chapters: 8 - Words: 8,718 - Reviews: 7 - Favs: 12 - Follows: 7 - Published: 10/27/2020 - Sonic Hedgehog, Sonia Hedgehog, Manic Hedgehog, Queen Aleena Hedgehog - Complete
Please forgive us by jacquisup
What if Sonic was blamed for something he never did and left by his friends? He only has one thing to do and go back home.
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: K+ - English - Hurt/Comfort/Friendship - Chapters: 11 - Words: 9,391 - Favs: 14 - Follows: 7 - Published: 10/21/2020 - Sonic, Knuckles, Sonia Hedgehog, Manic Hedgehog
Song of Angel Island by TheLostEris
Sonic, Knuckles, and Amy get transported to another dimension during a fight from chaos control. They leave their partners alone thinking they are dead. Will they ever get home? Sonic Underground and Sonic X crossover
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: M - English - Family/Romance - Chapters: 3 - Words: 3,784 - Favs: 1 - Follows: 1 - Updated: 10/8/2020 - Published: 6/18/2018 - [Amy, Manic Hedgehog] Sonic, Shadow
The Rise of Sonic Underground (BEING REWRITTEN) by Bananaboat2009 reviews
Manic and Sonia haven't seen or heard from their brother, Sonic, for 10 years now. As they reunite, they meet new friends, and find a long lost relative. (BEING REWRITTEN)
Crossover - Sonic Underground & Sonic Boom - Rated: K+ - English - Chapters: 9 - Words: 5,218 - Reviews: 5 - Favs: 9 - Follows: 8 - Updated: 7/20/2020 - Published: 2/16/2020
Ash and the Sonic Underground by DragonMasterWarrior reviews
When danger strikes in Mobius, it's up to Ash to help Sonic, Sonia and Manic come together to defeat Dr. Robotnik and save the world
Crossover - Pokémon & Sonic Underground - Rated: K+ - English - Adventure/Friendship - Chapters: 1 - Words: 5,044 - Reviews: 6 - Favs: 8 - Follows: 9 - Published: 4/30/2020 - Ash K./Satoshi, Sonic Hedgehog, Sonia Hedgehog, Manic Hedgehog
Kidnapped or Missing by CrimsonWarriorAngel reviews
Sonic and the team are having fun but the news show something that will change everything. This may uncover who Sonic really is after showing up in the village 3 years ago with no memories. At the same time the Royal family are trying to solve the mystery of what happened to Prince Samuel during the night 3 years and 6 months ago. Will they all find answers or are they lost for
Crossover - Sonic Boom & Sonic Underground - Rated: T - English - Mystery/Tragedy - Chapters: 5 - Words: 1,550 - Reviews: 2 - Favs: 13 - Follows: 14 - Updated: 3/14/2020 - Published: 10/27/2017 - Sonia Hedgehog, Manic Hedgehog, Queen Aleena Hedgehog, Sonic
Musical Hedgehogs by Netaltvx
The bear and bird are surprised to see that the hedgehog has siblings.
Crossover - Banjo-Kazooie & Sonic Underground - Rated: K - English - Chapters: 1 - Words: 102 - Published: 3/8/2020
Tempos da escola by IsTikal
está turma está se preparando para os dia de uma escola normalmente "normal" -Tosse- Só que não -Tosse- como quais quer alunos vão ter varias aventuras durante seus dia a dia escolares vamos ver no que vai dar
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: K+ - Portuguese - Family/Romance - Chapters: 1 - Words: 740 - Published: 1/26/2020 - Sonic, Amy, Shadow, Tikal
Mario and fuchs are rivals by elias346bo
Mario Meets a one artic german fox called "Fuchs" and fights
Crossover - +Anima & Sonic Underground - Rated: M - English - Tragedy/Hurt/Comfort - Chapters: 1 - Words: 103 - Published: 4/16/2019
Escape by TheWaffleKid reviews
After finding a boy with Enhanced Abilities in the desert, Manic the Hedgehog's life is turned upside down yet again as he's finally presented an opportunity to escape his miserable reality.
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: K+ - English - Family - Chapters: 10 - Words: 13,443 - Reviews: 2 - Favs: 3 - Follows: 3 - Updated: 3/12/2019 - Published: 9/1/2018
Sonic Underground Re-Surfaced by LilliahnInsanity reviews
Tails has been worried about Sonic's overly strange behaviour lately, so Shadow decides to help if only to learn more about his rival. Meanwhile Sonic wants to go visit his siblings properly without his friends worrying about his absence. The last thing he needs is for Amy to find out he's a real-life prince and not in just her fantasies.(Sonadow) [Hiatus]
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: T - English - Romance/Adventure - Chapters: 2 - Words: 1,658 - Reviews: 20 - Favs: 66 - Follows: 69 - Updated: 3/9/2019 - Published: 11/28/2018 - [Sonic, Shadow] Sonia Hedgehog, Manic Hedgehog
First Song-fiction by bajy reviews
My first song fiction. I have been thinking about this for a long while. Here's Sonic underground; Unison rebels of rhythm and dance style (love that old game!)! I do hope you enjoy this Parody I made! I don't own Sonic underground nor Unison rebels of rhythm and dance, just the lyrics of this Parody, okay?
Crossover - Game X-overs & Sonic Underground - Rated: T - English - Parody - Chapters: 1 - Words: 113 - Reviews: 4 - Favs: 2 - Published: 8/28/2018 - Complete
Sonic One-Shots by PhillipTheHedgehog reviews
A collection of one-shots featuring the Sonic cast
Crossover - Sonic Underground & Sonic the Hedgehog - Rated: K - English - Humor - Chapters: 2 - Words: 585 - Reviews: 3 - Favs: 4 - Follows: 2 - Updated: 2/17/2018 - Published: 2/15/2018 - Sonic Hedgehog, Sonia Hedgehog, Manic Hedgehog
Freedom Fighters by Dawn Totadile reviews
My version of how to combine every show, and a few of the games, of Sonic the Hedgehog that I've ever watched. I do apologize for the inaccuracy on some parts, but eh, this is a fanfic. So follow The Sonic Underground as they help the Knothole Freedom Fighters to defeat Robotnik, and find out what exactly Snively's hiding from his uncle, as well as the rest of Mobius.
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: T - English - Adventure - Chapters: 8 - Words: 25,884 - Reviews: 10 - Favs: 20 - Follows: 19 - Updated: 10/10/2017 - Published: 9/23/2015 - [Sonic, Sally] Manic, OC
Distance friends by CutsiePie3890 reviews
Ugh! School! That's something Sonic Underground and Sonic's comrades had to deal with. When it got them all down, distressed juvenile Tails remained neglected with no one to play with. That is till the school commenced the pen pal site. Cream takes investment when he begins overlooking her. Things get pretty heated. (Discontinued for now )
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: K+ - English - Friendship - Chapters: 1 - Words: 598 - Reviews: 3 - Favs: 1 - Follows: 1 - Published: 3/6/2017 - Tails, Cream/Cheese - Complete
harry potter read the mobion prince by Ghost the Fox reviews
well this harry potter has a secret and the rest of the wizards at Hogwarts well soon find out what it is and how is harry so fast and whats with the hedgehog on the cover of the book
Crossover - Harry Potter & Sonic Underground - Rated: T - English - Adventure/Family - Chapters: 7 - Words: 5,338 - Reviews: 19 - Favs: 81 - Follows: 80 - Updated: 1/22/2017 - Published: 1/13/2016
Chaos Elements by TheFireBurnings reviews
This is a story of how 2 worlds Meet And find love,sorrow,Adventure,pain,and Betrayal. See The Mane 6 And Spike Take on Möbius And Watch Sonic And His Friends Take on the challenge of sunset shimmer.
Crossover - My Little Pony & Sonic Underground - Rated: T - English - Romance/Adventure - Chapters: 32 - Words: 39,412 - Reviews: 51 - Favs: 19 - Follows: 13 - Updated: 1/22/2017 - Published: 4/13/2015 - Rainbow Dash - Complete
Bubbles and Tails X by RachePie reviews
The story of PPG, Sonic, RRB, Eggman, Mojo JOJO, etc...Tales of how they survived life as Superheros and Villains!
Crossover - Powerpuff Girls & Sonic Underground - Rated: K - English - Adventure/Mystery - Chapters: 11 - Words: 7,713 - Reviews: 4 - Favs: 2 - Follows: 1 - Updated: 12/27/2016 - Published: 11/23/2016
Sonic Underground-Equestria Girls Unleashed by Slender.EXE
The Sonic Underground, along with Silver and Shadow, attempt to stop another one of Eggman's diabolical plans. However, Mephiles aids the doctor, and the plan is successful... more or less. The five hedgehogs then find themselves in the EG world as humans, along with Eggman, Mephiles, and the Chaos Emeralds. With the aid of the Mane Six, Sunset, and Si-Twi, will they get back home?
Crossover - My Little Pony & Sonic Underground - Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 7,373 - Favs: 3 - Follows: 4 - Published: 12/26/2016
Reunite and Fight! by Zakayla the Hedgehog reviews
Lyric is Back and is out for revenge. It's up to the Sonic and the team to stop him. And guess who's joining the party? Shadow! And don't forget about Zakayla! Will everything fall? Will Lyric get his way? And Sonic has siblings! Come join them on an adventure to never forget! SonAmy
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: K - English - Adventure/Family - Chapters: 10 - Words: 12,101 - Reviews: 15 - Favs: 16 - Follows: 10 - Updated: 12/17/2016 - Published: 9/17/2016 - Shadow, Rouge, OC, Manic Hedgehog - Complete
69 by Dusk Mere reviews
696969696969969696969.5
Crossover - Shrek & Sonic Underground - Rated: M - Devanagari - Angst/Tragedy - Chapters: 1 - Words: 18 - Reviews: 2 - Favs: 1 - Published: 12/5/2016 - Complete
Forever Changed by FireflyLake
Everyone knew about their casual flirting and arguments, but no one knew about their late nights alone and how they actually got along quite well. It was never supposed to turn into anything more than just playful talk. Neither of them had actually planned on becoming close or tied down. After a night of pure passion and brandy everything changes. M for Lemon. [REBOOTED]
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: M - English - Drama/Romance - Chapters: 8 - Words: 9,508 - Favs: 4 - Follows: 4 - Updated: 8/19/2016 - Published: 8/17/2016 - Knuckles, Rouge, Espio, Manic Hedgehog
Water Drops by angelrose2001 reviews
"As if going on a first date and meeting your date's family wasn't enough, now I have to deal with having powers too! My life is just a little ray of sunshine, isn't it?" Z's point of view. Sequel to Z Hedgehog. Z Hedgehog should be read first, or you won't know what's going on and who Z is. Could probably be rated K. HAS NOT BEEN ABANDONED! I WILL finish it.
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: T - English - Romance/Suspense - Chapters: 11 - Words: 5,408 - Reviews: 16 - Favs: 1 - Follows: 2 - Updated: 8/12/2016 - Published: 7/19/2014 - OC, Sonic Hedgehog, Sonia Hedgehog, Manic Hedgehog
SU meets SatAM by TheRealKittyCraft reviews
When Sonic is having nightmares and is turning into a dark being every night, the Sonic Underground go to the Oracle who sends them to another world. When arriving there, they meet some people from Knothole and another Sonic! Two Sonic's what can go wrong? Can SU Sonic, Sonia, and Manic return home? Will they find their mother? Will Robotnik be stopped? (SatAM SU Crossover)
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: K - English - Friendship/Adventure - Chapters: 3 - Words: 3,641 - Reviews: 10 - Favs: 27 - Follows: 21 - Updated: 7/20/2016 - Published: 7/19/2015 - Sally, Sonic Hedgehog, Sonia Hedgehog, Manic Hedgehog
Ride Or Die - A Manourge Fic by SugarySweetSprites reviews
Manic's life has gone to crap. With the theft of a nostalgic pendant, everything in his life seems to have gone for the worse. And then another mean, green hedgehog came into his life...
Crossover - Sonic the Hedgehog & Sonic Underground - Rated: T - English - Romance/Humor - Chapters: 5 - Words: 16,384 - Reviews: 4 - Favs: 12 - Follows: 9 - Published: 6/30/2016 - Manic, Scourge, Sonia Hedgehog, Manic Hedgehog - Complete
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