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The True Anti Sonic! by Cinos92
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (IDW Comics), Sonic the Hedgehog (Archie Comics), Sonic the Hedgehog (Video Games), Sonic Underground
30 Jan 2026
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Summary
Imagine if someone with a personality that is the absolute antithesis of Sonic the Hedgehog besides morality is somehow given a second chance at life, emerging not just as any character, but specifically as Anti-Sonic from the Archie Comics universe. Someone who embodies traits that are diametrically opposed to Sonic's vibrant energy and free spirit, being reborn amidst a world that thrives on speed, anarchy, and decadence. (CROSS POSTED ON WEBNOVEL AND WATTPAD!)
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Might Not Have, Did Not Lose by The_O_IsSilent
Fandoms: Sonic Underground, Sonic Boom (Cartoon)
29 Jan 2026
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Summary
Even though he’d grown up for a good portion of time without them, finding his triplet siblings Manic and Sonia was the best thing that ever happened to Sonic.
Saying goodbye to them was the worst.
After a failed mission to get their mother back ended in disaster, Sonic decided they needed to switch tactics. The only way to do that seemed to be splitting up, as much as they all hated it.
Now it had been five years, and he hadn’t seen his siblings since that day. Sonic was living out his days in a beach hut on some unnamed island, keeping things steady and laying low. Until Sonia and Manic show up out of the blue with the first new bit of information they’d heard about their mom in years, and the peaceful life Sonic had come to know disappeared in an instant.A song-fic set on the Sonic Boom Island but with Sonic Underground Background. This whole funky little universe is inspired by a random text my roommate sent me that said "Sonic Boom Sonic is def Sonic Underground Sonic and the bandana is to cover his necklace" so that's what we're working with.
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The Gamester by TalyllyntheIronWarrior
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Archie Comics), Sonic Boom (Cartoon), Sonic Underground, Sonic the Hedgehog: The Animated Series, Sonic the Comic, Sonic the Hedgehog (Video Games), Adventures of Sonic the Hedgehog (Cartoon)
29 Jan 2026
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Summary
When the Knothole Freedom Fighters responds to an S.O.S to investigate suspicious activity located near a relay station and encounter the Destructix, they assumed that Scourge's gang was the threat to the relay station's safety. They would be mistaken for they are all under threat by an entity calling themselves the Gamester. As both groups quickly learn, they are merely unwilling players in a dangerous game of life or death hosted by the unknown foe and the cost of failure is their own lives.
Union between uneasy allies will be crucial, cooperation between enemies will be vital and teamwork between people on opposite sides will be essential...
Series
- Part 5 of The Talyllyn Sonic Universe
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One celebration can expose something else by Imanepilepticfreak
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground
28 Jan 2026
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Summary
A secret can only last so long.
Series
- Part 34 of Sonic/Sonic Underground
- Language:
- English
- Words:
- 3,457
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 24
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Mobius by Millie_Kalypso
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog (IDW Comics), Sonic the Hedgehog (Archie Comics), Sonic the Hedgehog (Live Action Universe), Sonic Underground, Sonic Boom (Cartoon), Sonic X (Cartoon 2003)
28 Jan 2026
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Summary
How Sonic’s World Came To Be.
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More Than Blood by Levender_Sonic
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Boom (Cartoon), Sonic Underground
28 Jan 2026
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Summary
Sonic has always been good at keeping secrets. Some are small, some are heavy, and some change everything. He has a family he chose, a life he’s built carefully, and a past he doesn’t talk about. When the Royal Family of Mobotropolis arrives in Hedgehog Village searching for answers about a lost princess, those secrets start pressing closer than Sonic is ready for. Between love, loyalty, and blood ties he never asked for, Sonic is forced to face a question he’s been avoiding for a long time: what actually makes a family — the one you’re born into, or the one you fight to keep?
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The Queen's Oldest Son and The Island's Thief. | Sonadow by yourdadshouldvepulledout
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Prime (Cartoon 2022), Sonic Underground
27 Jan 2026
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Summary
Sonic was suddenly called to the palace for an arranged marriage he never wanted to happen. Even after all his protesting. His mother claimed how it was to bring peace to the land. Which wasn't completely untrue. Shadow was called to be a spy in the palace. To eliminate the queen's oldest son. He was disguised as a knight and never knew who he was really after. After not being spared many details and rushed out the door. Neither knew each other was there until a sudden call changed everything.
Sonic always knew he was from a Royale family. Yet he never said anything to his friends back on Green Hill. Felt as if it would mess everything up. Felt as if they would treat him differently. That was until his biggest secret broke out..
Shadow was disguised as a knight and never knew who he was after until a family picture on the wall. He was after his beloved and it pained him so. Now he had to figure how to keep his love alive but not betray the organization. One decision can change everything.
(I changed the rating and warnings bc have you seen the first chap and my foul mouth? 100% not kid friendly.)
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The Way Around The City Walls by voidsonic
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground
25 Jan 2026
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Summary
Nicky, a escaped slave finally found freedom.
that great escape led him to finding his loved ones, something he never grew up having.
Eventually it led him to Shadow, a freedom fighter,
the mobian who changed everything about him. -
Two Hedgehogs, Many Emotions by AsterTheFlower696
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog (IDW Comics), Sonic Underground
24 Jan 2026
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Summary
During winter break, Sonic and Jet broke up on awkward terms and Sonic has been dreading the start of the second semester at the high school he and his brother and sister, Manic and Sonia, attend, however, all winter break he was also thinking over his relationship with Shadow the Hedgehog, and what he feels about the black and red striped hedgehog.
- Language:
- English
- Words:
- 697
- Chapters:
- 1/25
- Bookmarks:
- 1
- Hits:
- 41
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The Mystery of the Mobian Royals by FortuneSpirit
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground
22 Jan 2026
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Summary
It was supposed to be a normal day. Like every other day. But one little conversation, one life-altering revelation just had to come by and ruin everything. Sonic might just have to acknowledge his past again. But is he ready for it? For what that will change?
And is his past ready for him?
Series
- Part 5 of When to Fight, When to Wait
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Running (Back to You) by five_hour_anxiety
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic Underground
21 Jan 2026
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Summary
Sonic had been running with his friends for a few years now, and had come to accept his lot in life - a super fast hero that occasionally became a god to save the world. Simple, really, even when you feel like you're unwanted and forgotten by your family.
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Sonia and Manic had been running together for a few years now, and had come to accept their lot in life - a pair of royal siblings that are expected to lead their nation to prosperity. Simple, really, even when you're drowning in grief for the dead triplet that should have completed your family.
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The Crowns Three Notes by Its_Just_Zuniper, Swirl_Girl
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Archie Comics), Sonic Underground
20 Jan 2026
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Summary
The war is over. Robotnik is gone. So why does victory feel like a prison?
Six months after saving the world, Sonic the Hedgehog is trapped. Not by badniks or lasers, but by silk sheets, political expectations, and a crown that feels three sizes too small. The freedom he fought for is a distant memory, replaced with council meetings and a cage made of gold in the palace he now calls home.
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Sonic Underground: The Remake by Jinren_chan
Fandoms: Sonic Underground, Sonic the Hedgehog (Live Action Universe), Sonic the Hedgehog - All Media Types
19 Jan 2026
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Summary
(Sonic) Triplets born, the throne awaits
A seer warns of a deadly fate
Give up your children, separate
Bide your time, lie in wait!Sonic Underground
Sonic Underground
They made a vow, their mother will be foundThe children grow, learn what's right
Leaders of the freedom fight
They seek their mother, she knows they do
Is it time? If she only knew
Will the prophecy come true?Sonic Underground
Sonic UndergroundQueen Aleena: I long for my children, but I have to wait
To act too soon could seal their fateThey made a vow, their mother will be found
Sonic Underground!- Language:
- English
- Words:
- 3,955
- Chapters:
- 1/?
- Kudos:
- 4
- Hits:
- 68
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A Tale of Tails by jaybee30
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog (Archie Comic), Sonic Underground
18 Jan 2026
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Summary
Keeping secrets are a bad idea. A Lie will remain a lie no matter how many people believe it. Tails hadn't known how badly a person can screw things up until he learns it the hard way. After an argument ultimately leads to Sonic being put out of action, it's now up to Tails to help protect the world from the concequences of a madmans actions. But how can you save the world when the enemy wears the face of the one you love the most.
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A Sonic the Hedgehog AU - The Freedom Fighter Chronicles by Minneee
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground, Sonic the Hedgehog (Archie Comics)
18 Jan 2026
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Summary
For centuries, the Aleenas and the Acorns ruled Mobius in an uneasy diarchy. Eventually, Queen Aleena the Hedgehog came to become the sole ruler of the throne, bringing prosperity to Mobius. However, darkness was looming over the horizon as Robotnik came, swarmed, and took over the nation of Mobius as Mobius' forces faltered. Queen Aleena herself disappeared and the Acorns went into hiding; leaving her triplets in the care of loving families among the commoners to protect them from Robotnik. The trio grew up and learned of their royal origins, banded together to overthrow Robotnik, made a lot of friends along the way and restored the royal dynasty to rule Mobius. Sally Acorn and Sonic the Hedgehog ruled together, bringing a ten year peace to Mobius.
However, this peace was not to last. A famine has struck Mobius, and there is only enough rations to go around. Bandits roam freely and terrorize villages, and villages themselves are disappearing without any explanation along the border. To make things even more precarious, an isolated city-state is now knocking on Mobius' door conveniently as things are getting harsh for Mobius. Will the Freedom Fighters be able to rally together and keep Mobius free?
Series
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Alone Together by AealZX, HappyFoxx
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground
17 Jan 2026
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Summary
Before Sonia met her brothers, Sonic found Manic and helped hold the pieces of his brother together after Ferrell, Manic’s adoptive dad, was roboticized by Robotnik for stepping out of line. After spending so much time only catching glimpses of Manic’s life, Sonic is suddenly thrown into learning everything about him. About his dad, his role as Court Jester, his powers, what the people of the Resistance really think of him, and how it all affects his health and heart.
The time between losing Ferrell in the main fic and finding Sonia in the main fic.
Series
- Part 2 of Underground Reunion Tour AU
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The Midnight Rose by HiddenGem98
Fandoms: Sonic the Hedgehog - All Media Types, Sonic Underground
17 Jan 2026
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Summary
22 years after Sonic defeated the time eater he's settles down into a quiet life with Amy, but when their 18 year old daughter gets taken by Eggman right from their Green Hills back yard one of his biggest secrets gets revealed. And now Shadow is set to be his son in law? Surely that will go well.
Series
- Part 1 of The Midnight Rose
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How Are You! Nicky the hedgehog by ShardAC
Fandoms: Sonic the Hedgehog (Manga 1992), Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Archie Comics), Sonic Underground
17 Jan 2026
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Summary
Nicky opens his eyes…. To not what he remembers closing them to. Instead of his nice and (mostly) peaceful town he is greeted by a war against a tyrant trying to take over the world. And why does he seem older? Wait that’s not his reflection…..
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Sands of Chaos by Lava_Serpant
Fandoms: The Mummy (Movies 1999-2008), Sonic the Hedgehog - All Media Types, Sonic Underground
15 Jan 2026
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Summary
Basically the Mummy 1999 but with a bit of a twist. (Sonadow).
Sonic stumbles upon an old trinket that looked really important so he took it to Sonia, his book smart sister, who discovers it was the key to finding Hamanaptra. Ancient city of the dead. Always ready for adventure Sonic was all set to be there for Sonia every step of the way. Until she insists they bring the very person who found the artefact in the first place.
Shadow the Hedgehog, broody, emo, rival Shadow.
Just when Sonic thinks it can't get any worse a undead mummy is awakened and becomes convinced Sonic is his ancestor and won’t take no for an answer. It's a race against time as the three work to send this undead stalker back to the underworld.
Sonic’s never lost a race before, but there’s a first time for everything right?
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Family, and all the Complicated Feelings That Come With by AdverseFlyer909
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic Underground, Sonic the Hedgehog (IDW Comics)
14 Jan 2026
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Summary
“Didn’t even look like Sonic, honestly-” Amy starts, and Tails continues.
“Green spikes, really messy bangs- brown eyes I think? I think he called you Arthur first- said a friend told him you were here.”
“He did? I didn’t even hear that- he was so quiet asking the receptionist. I didn’t catch it-” Amy tilts her head as she processes the new information. Tails nods, but stops as he notices Sonic has gone deathly still.
“....Sonic?” The hedgehog in question blinks as he remembers where he is. He looks to Knuckles, who has very conveniently gotten very quiet. A ping comes in on Knuckle’s communicator, and Sonic glances down at it for a moment before making eye contact with an increasingly uncomfortable echidna.
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or -After Sonic Forces, a certain hedgehog has had enough with the lack of contact from his brother, and finally makes a move