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Echoes of Chaos by ShaddySoup
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games)
08 Sep 2025
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(aka shadow and biolizard chill because theyre both failures, the AU)
THIS IS AN AU. IF YOU DONT LIKE AUS. WHAT ARE YOU DOING ON THIS WEBSITE. EXPECT CRAZY THINGS TO HAPPEN THAT ARE VERY OUT OF CANON. i mean just read the title
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The Biolizard couldn’t speak, not in a traditional way. It was still just a dumb lizard. However, it was somewhat sentient. Somewhat. To communicate, it could create a link with a fellow user of chaos energy and from there it would be able to share its extremely simplistic thoughts and feelings.Shadow was the only one around it could share its thoughts with. So it did.
Little Shadow- that's what the creature had named him. The hybrid wasn’t sure the reason behind it, whether it be his size compared to the lizard or whether it saw him as something of a younger sibling.
As if on cue, he heard an intrusion in his thoughts as the lizard formed a link.
“Little Shadow.”
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yeah, uhm. shadow is marked as a failure after an experiment goes crazy wrong and is forced to kind of chill with the biolizard until hes needed
TAGS WILL BE ADDED AS IT PROGRESSES. IM JUST ALWAYS ON A TIME CRUNCH. -
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Amy has a new friend! Now the real question is where did she find this mysterious black and red patterned octopus? Well, he can't be that bad right? However, it turns out Amy has to leave her new friend with Sonic for a few days as she goes and attend important business! What's the harm in leaving a hungry mysterious creature and Sonic alone in a room together?
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Sonic Awakening by aloftinthebreeze
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog (IDW Comics)
22 Aug 2025
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Four months after the War ended, Sonic finds himself waking up in Tails' bed without much memory of the prior night. He discovers that, thanks to Rouge, he and Shadow finally spent a night together, after circling one another for years. The pair can finally be honest with themselves and each other, admitting and commiting to the feelings they've harbored for so long. Just as soon as Sonic admits to Shadow that he remembers nothing of their first night together, that is.
Meanwhile, the Doctor is digging up ancient evils again. The team understands the stakes too late and Sonic is once again separated from them. Shadow and team must recover him once again while dealing with a menagerie of threats, chief of whom seems not to be ancient, but very much modern. Sage, Dr. Robotnik's fully autonomous generalized artificial intelligence agent, is rapidly gaining strength, influence, and complexity. Faced with a foe without a body to destroy, will the team be able to save the planet before it is too late?
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Plot Centric Adventure/Suspense Story with occasional heavy spice and occasional graphically violent action sequences.
Complex multi threaded narrative
Knuxouge SubplotCurrently in Arc 2 of 3.
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Handle Me With Care by bluprismwrites
Fandoms: Sonic the Hedgehog (Live Action Universe), Sonic the Hedgehog - All Media Types
18 Aug 2025
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Shadow survived the fall after the ARK explosion, and is now alone in the middle of nowhere. Or, so he thinks - he quickly encounters a tiny purple mouse called Kaia, merely only 8cm tall, similar to himself and Sonic, who withstood some of the impact from his crash into the Earth. Racked with feelings of guilt, Shadow checks to see if the tiny mouse is fine, only to discover that she is incredibly chatty and insists on travelling with him for protection, much to his dismay.
Along the way, Shadow uncovers more about himself, with the help of his newfound tiny friend. Events/elements of the Shadow the Hedgehog game and Sonic X Shadow Generations will be loosely incorporated throughout the fic.
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Stars Align by initforthelolz
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Live Action Universe), Sonic Boom (Cartoon), Sonic Prime (Cartoon 2022), Sonic the Hedgehog (IDW Comics)
15 Aug 2025
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After witnessing a terrible tragedy, Shadow is frozen in stone for five hundred years. When the spell finally ends, he has only one goal: revenge. But he'll need a bit of extra fire power to make his enemies pay. Unfortunately for him, a certain blue hedgehog is hell bent on making sure that this power doesn't fall into the wrong hands.
OR
Sonic and Shadow chase each other across the globe and beat each other up a whole lot along the way.
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The Ultimate Parasitic Lifeform: That Freak of Nature by AZWritesStuff
Fandoms: Sonic the Hedgehog - All Media Types
29 Jul 2025
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Sonic the Hedgehog's life was far from boring, that's for sure. Unfortunately, he was suffering through one of those slow days between grand adventures. Tails seemed to be interested in something though: this strange signal he received from some abandoned facility barely connected to the EggNet. It wasn't an emerald, no, but something else messing with the ambient energy inside.
Huh. Well, that doesn't just happen outta nowhere.
To kill their boredom, Sonic and Tails decided to go and investigate the signal, expecting to find an abandoned project of sorts within that old base.
Well...they weren't wrong about what it was, but they weren't expecting it to be an actual living being hiding in the building's ventilation shafts where it wasn't supposed to be at all.
Nor was Sonic expecting to become an unwilling host to something that genuinely made him feel uneasy.
...Would it bad idea to ask how things could possibly get worse from here?
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Metal Sonic Comes Across Shadow in This Doom morph In battle... And Things get a bit Sidetracked.
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"He wasn’t a guy who was so easily scared, much less of Shadow, but… Somehow, Sonic felt goosebumps trailing through his body, as if some instinctive part of him felt that something was wrong. His survival instincts screamed that he would have a better chance of staying safe on the raging storm outside than continuing inside, which was a ludicrous idea. Sonic knew Shadow wouldn’t hurt him (not much, at least), so why was he having such a dreadful feeling growing in the pit of his stomach?"
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Shadow is missing, and Sonic is called into a mission to find and bring him back. Even with the lingering feeling that something is wrong, Sonic still agrees to help, but maybe he should've listened to his instincts this time.
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How long can you pine after a single death, before the emotions run stale?
How many lifetimes can pass before you stop caring about new faces and eons run together?Shadow didn't count, but his estimation was around ten thousand since Sonic died.
But the day a bundle of joy fell on his lap forced him to reconsider his priorities.
Because at first, Shadow only saw the baby Silver as a promise: a way to escape to the past and change it all.
And now as a second bundle fell from the sky, he was left to weigh the importance of one life over another.✦✦✧✦✦☆✦✦✧✦✦
Spoilers:
[ Non-Black knight: "Shadow is a single dad in the woods" ]
[ Familial: Silver/Shadow ]
[ Romantic : Shadow/Sonic ] -
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Captain Sonic’s first space mission went spectacularly off-course—in every possible wrong way. Now, stranded on a derelict ship with a deadly, seductive alien, he’s caught between fighting for survival and surrendering to something darker… and far more dangerous than he ever expected.
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Trusting you(rself) by runalien for Ryuuki (Impydragon)
Fandoms: Sonic the Hedgehog - All Media Types
19 Jun 2025
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After acquiring his new Doom powers in white space, Shadow begins feeling out of control again. Luckily, Sonic is there to give him some encouragement...
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you’re insecure (don’t know what for) by jasons (jasonsgraceless)
Fandoms: Sonic the Hedgehog - All Media Types
05 Jun 2025
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Shadow’s not too keen on having Sonic see him in his new, monstrous form. Convinced he’s too hideous for any sort of affection.
Sonic’s hell-bent on proving him wrong.
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Gee, Amy Rose, How Come You Get TWO Monster Boyfriends? by MMMOTH
Fandoms: Sonic the Hedgehog - All Media Types
02 Jun 2025
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Amy Rose finally has what she wanted. Granted, it took damn well a decade for Sonic to return her feelings, but she can confidently say that, one year into their relationship, they are very much in love. To top it off, they've both won Shadow's heart as well, and suffice it to say, “SonShadAmy” has become Mobius' #1 Power Triad, and Amy couldn't be any happier. Although as their relationship blooms and becomes more physical, she may get more than she bargained for.
Or: In Which Amy Is A Monsterfucker.
A trio of stories involving Amy Rose, her boyfriends, and their tendencies to transform, shapeshift, and just have weird anatomy in general.
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Sonic the Hedgehog is a hard guy to scare. He's faced eldritch abominations that completely eclipse his measly hundred centimeter height with nothing but the straps on his shoes, a cocky grin, and an attitude big enough to compensate for his stature.
That being said, Sonic was fucking terrified at the moment.
Sonic doesn't know about Shadow's freaky alien forms.
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Shadow wants to help his daughter Maria.
Series
- Part 1 of sonamy/(bio) sonadow fankids AU
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”World Famous Sonic the Hedgehog is actually an OMEGA?!”
“FAKER! The Blue Blur has Played Us All!”
“Our Favorite Speedy Hedgehog has been LYING to us!”
Sonic couldn't hide his snickers as he scrolled through his phone.
Sonic makes a little post on social media, the internet freaks out about it, and Shadow pops off on his fellow alphas.
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Sonic is already used to his heat cycles and takes a time off to nest while he's under the influence of such strong hormones.
Shadow doesn't quite understand the whole thing and suggest to the blue that he could stay at his house meanwhile.Oh, he really wasn't ready for what was coming to him...
.....it's Shadow's first ever rut.
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Blue in the Shadows by lightrivals
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games)
03 Apr 2025
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Blue Hedgehog: If you get the time, come meet me right outside Central City for a race in an hour.
Shadow: I don't have time for this.
Blue Hedgehog: Do you ever have time for anything?? Anyway, it sounds to me like you're giving up already! Another win for Sonic the Hedgehog! So lame; can't even put in a little effort, you cranky old hog?
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When Sonic shared he could still transform into the werehog every full moon, Shadow predictably challenged him to a fight. Little did he know their little spat would reactivate the dormant Black Arms DNA in his genes he thought he left behind in White Space.
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Shadow, heir to the black arms throne, longs to go to earth. When given the chance he takes it.
But he finds out more than he bargain for about his past.
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Doomorph, Wings & AU by MaryAkatsuki19
Fandoms: Sonic the Hedgehog (Video Games), Sonic the Hedgehog (Live Action Universe)
14 Mar 2025
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Sonic was quiet at night when something outside of the house was near.
Series
- Part 7 of Shadow Bottom Week 2025