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Underground Reunion Tour by AealZX, HappyFoxx
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground
11 Sep 2025
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Summary
Triplets born, the throne awaits.
A seer warns of a deadly fate.
Give up your children, separate.Nineteen years ago Tikal warned a mourning queen that if she returned to her home with her new children, they would be killed. To save them, she placed each child in the hands of someone she trusted and upon arriving at her home to confront her husbands assassin she was quietly killed and Robotnik rose to power.
Nineteen years ago a plan was set in motion. The lost children of Queen Aleena will have to come together to bring it to pass, or the Eggman Empire will continue its spread across the planet until there is nothing left to save.Series
- Part 1 of Underground Reunion Tour AU
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STH: Bajo los cimientos by chai_ssr
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic Underground, Sonic the Hedgehog: The Animated Series
08 Sep 2025
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Summary
En un mundo sometido por Robotnik. Sonia y Manic intentan sostener los fragmentos de una profecía que ya no parece guiar a nadie.
Entonces, el destino les lanza a dos forasteros: Sonic y Tails. No saben cómo llegaron, ni cómo volver. Pero tienen claro que no pueden quedarse de brazos cruzados.
Aunque, para su desgracia… el rostro de uno de ellos resulta demasiado familiar.Crossover de Sonic de los juegos con la serie de Sonic Underground...
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STH: Under the foundations by chai_ssr
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic Underground, Sonic the Hedgehog: The Animated Series
05 Sep 2025
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Summary
In a world subdued by Robotnik. Sonia and Manic try to hold on to the fragments of a prophecy that no longer seems to guide anyone.
Then, fate throws them two strangers: Sonic and Tails. They don't know how they got here, or how to get back. But it's clear to them that they can't just sit idly by.
Although, to their misfortune... the face of one of them is all too familiar.A crossover between the Sonic games and the Sonic Underground series...
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Sonic The Hedgehog SatAM Re-Genesis 03x10 -- "CHILDHOOD'S END" by EricEmmanuel
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (IDW Comics), Sonic the Hedgehog (Video Games), Sonic the Hedgehog: The Animated Series, Sonic the Hedgehog (Archie Comics), Sonic Underground, Sonic SatAM
15 Aug 2025
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Summary
In the spectacular finale to Season 3... Sonic battles Eggman to keep Nibelium from falling into the wrong hands.
Series
- Part 30 of Sonic The Hedgehog SatAM Re-Genesis
- Part 10 of Phase III -- "THE NIBELIUM CRISIS"
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Sonic The Hedgehog SatAM Re-Genesis 03x08 -- "THE EGGMAN COMETH" by EricEmmanuel
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog (IDW Comics), Sonic the Hedgehog: The Animated Series, Sonic the Hedgehog (Archie Comics), Sonic Underground, Sonic SatAM
01 Aug 2025
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Summary
An old enemy returns in a terrifying new form.
Series
- Part 28 of Sonic The Hedgehog SatAM Re-Genesis
- Part 8 of Phase III -- "THE NIBELIUM CRISIS"
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Sonic The Hedgehog SatAM Re-Genesis 03x06 -- "ONE NIGHT IN GREEN HILL" by EricEmmanuel
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog: The Animated Series, Sonic the Hedgehog (Archie Comics), Sonic Underground, Sonic SatAM, Sonic Boom (Cartoon)
18 Jul 2025
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Summary
Sally and Bunnie do a little investigating work while Sonic becomes a guitar hero.
Series
- Part 26 of Sonic The Hedgehog SatAM Re-Genesis
- Part 6 of Phase III -- "THE NIBELIUM CRISIS"
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Sonic The Hedgehog SatAM Re-Genesis 03x05 -- "THE RED HUNTER" by EricEmmanuel
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog: The Animated Series, Sonic the Hedgehog (Archie Comics), Sonic Underground, Sonic the Hedgehog (IDW Comics), Sonic SatAM
10 Jul 2025
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Summary
The Chaotix's pursuit of Rouge the Bat leads Knuckles into The Hedgemony.
Series
- Part 25 of Sonic The Hedgehog SatAM Re-Genesis
- Part 5 of Phase III -- "THE NIBELIUM CRISIS"
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The Blood of the Covenant and the Water of the Womb by WeStaySillay
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Live Action Universe), Sonic Underground, Sonic Boom (Cartoon), Sonic X (Cartoon 2003)
07 Jul 2025
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Summary
“I'm sorry.”
She apologized. Apologized for not saving her brother, for failing her father, for leaving her mother all alone in that big castle with no family. She apologized for the life she'd live under Longclaw and her filthy hands.
“I'm sorry.”
She apologized for moments that haven't happened but knew would come. Moments where Longclaw would have another episode and will forget Maureen altogether, moments where the pain in her heart would be too much and spill onto her daughter (Holy shit, her daughter. Longclaw wasn't even sure she should be calling her that).
Longclaw was raised for taking lives, not nurturing them.
“I'm sorry.”
Or, an AU where Longclaw raises Sonic as part of the owl tribe
Or, I am going to give Sonic so many mommy issues
Series
- Part 1 of Claw and Fang
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Sonic The Hedgehog SatAM Re-Genesis 03x02 -- "DISTANT SHORES" by EricEmmanuel
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog: The Animated Series, Sonic the Hedgehog (Archie Comics), Sonic SatAM, Sonic Underground
26 Jun 2025
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Summary
Sonic, Sally, Tails, Nicole, and Bunnie head for The Hedgemony. Rouge discovers who her mystery buyer is.
Series
- Part 22 of Sonic The Hedgehog SatAM Re-Genesis
- Part 2 of Phase III -- "THE NIBELIUM CRISIS"
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Sonic Underground: Continued [Episode 0: Prologue] by ShinyMisty
Fandoms: Sonic Underground
23 May 2025
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Summary
Relive the events of Sonic Underground with Robotnik's hired Bounty Hunter, Sleet, as he recounts the trials and tribulations of the last three years of his life. Experience the moment he and his partner, Dingo, were hired by the tyrant to capture the dishonored Queen's three children, and each agonizing failure he deals with.
What was going through his mind during each defeat? What caused him to do the things he did?
Beta Read by Rusoji.Series
- Part 1 of Sonic Underground: Continued
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fight and run away by transjesterr
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground
18 Apr 2025
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Summary
“What are you doing!” she screams, and she hits him over and over again. He doesn’t blink or flinch, but his eyes are teary and he’s frowning and he looks so sad.
And behind them, the lair explodes, destroying what little hope they have of saving Manic.
Devastated by the loss of his brother, Sonic had run from Robotropolis, leaving behind the only family member he’s got left. He tries to forget everything that’s happened, but he can only run for so long before the past catches up with him. And, frankly, he’s tired of running.
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Rediscovered Dynasty by Tybs_is_Tybalt
Fandoms: Sonic Underground, Sonic the Hedgehog - All Media Types
14 Apr 2025
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Summary
A rewrite of Sonic Underground with a lot of my head canons and personal worldbuilding, I plan on rewiring most of the original 40 episodes and including ones of my own. Some episodes will have the triplets be fifteen but most of the story will take place with them ages up to twenty-one. slow updates but lots of stuff planned.
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Sonic the Hedgehog: Heroes of Mobius by Thomas_Holmes_the_Second
Fandoms: Sonic the Hedgehog - All Media Types
20 Feb 2025
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Summary
With his siblings and his loyal friends at his side, Sonic continues his fight against Robotnik's tyranny with speed, coolness and various obstacles along the way.
Series
- Part 5 of The League of Freedom
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Ghosts Of The Past Never Leave by Lark_Clan_and_Beach_Clan_Archives
Fandoms: Warriors - Erin Hunter
01 Feb 2025
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Summary
A (in)complete story of Catch's life, as they went from being Cinnamon to Catch, alone to loved.
- Language:
- English
- Words:
- 327
- Chapters:
- 1/?
- Hits:
- 3
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Not So Dumb by metallixgirl
Fandoms: Sonic Underground, Sonic the Hedgehog - All Media Types
22 Jan 2025
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Summary
Sleet thinks Dingo is as stupid as they come. Maybe on this adventure that might change a bit...
- Language:
- English
- Words:
- 324
- Chapters:
- 1/1
- Kudos:
- 3
- Hits:
- 20
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Dead Zone by General_Lee
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog: The Animated Series, Sonic Underground
15 Jan 2025
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Summary
After surviving Robotnik’s takeover, Nack and his mother adjust to a new life, a new location, and new rules.
Series
- Part 1 of War Crimes
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Sonic Underground Remake Season 1 by Julayla
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground, Conker's Bad Fur Day, Banjo-Kazooie (Video Games)
18 Dec 2024
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Summary
(Slight rewrite due to certain OCs changed and such) The first season on Sonic learning that he is of royalty, reunites with his long lost siblings, them allying with new friends and foes and taking on the likes of Dr. Robotnik and his crew alongside other adventures with some lore expansion alongside involvement from the worlds of Banjo-Kazooie and Conker's Bad Fur Day.
Series
- Part 1 of Sonic Underground Remake: The Series
- Language:
- English
- Words:
- 3,960
- Chapters:
- 1/?
- Kudos:
- 2
- Hits:
- 70
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Ready Or Not: Underground by goofnutgav
Fandoms: Ready or Not (Video Game), Sonic Underground
25 Nov 2024
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Summary
David "Judge" Beaumont is an LSPD SWAT sergeant who's been given command of a squad to deal with the growing crime wave in his city of Los Suenos, California.
But, just as he deals with a conspiracy he is somehow involved in, his whole world is changed forever by a tyrannical Roboticist and his army of machines, who invade his home dimension and throw everything into chaos.
Series
- Part 1 of Fight for Freedom
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Summary
A Cinderella/Romeo & Juliet story but instead of a charming prince it's a bounty hunter who's going after the resistance that you're apart of!
- Language:
- English
- Words:
- 2,305
- Chapters:
- 1/1
- Kudos:
- 3
- Hits:
- 45
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Sonic Heroes to the rescue by Imanepilepticfreak
Fandoms: Sonic the Hedgehog - All Media Types
31 Jul 2024
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Summary
Sonic gets a call from someone she hadn't seen in a while for help. Will she be there?
Series
- Part 10 of Sonic/Sonic Underground