Here's the Lab Sonadow! This takes place in the Sonic X verse, a bit of an AU if Prison island closed down at somepoint and became over grown with the island life. I kind of like the AU of Shadow being freaked and feral him he was left alone long enough. (I was at fist point to make a sequel due to my friend reading over my shoulder.) this is also my first time writing in Knuckles and Tails in a fanfic...so yeah

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With an unusual amount of caution, Sonic moved through the remains of a lab beneath prison island.

Machines lay busted and destroyed from what appeared to be an explosion. The walls charred from years old soot and molding age. A wet dripping sound was the only thing that filled the silence. A hole in the ceiling the cause, the edges rusted heavily as a broken water main continued to drip reddened water.

Thick vines broke through a steel wall at some point, the plant life eloping and somewhat crushing the inactive machinery.

Sonic frowned a huff, his emeralds closing for a moment. With how poor conditions were in here, how was Tails going to extract files from here?

He didn't know why his young brother needed the files, but he did know they needed to get them before Eggman.

Sonic sighed softly as he pushed away a broken mug on the ground. He really wished he knew more about what was going on lately.

First half of the moon explodes, then Knuckles came bragging about stopping the robotic part in space from eclipsing the planet. There was also some grumbles about a bat lady, but he sort of zoned out after that.

Next thing he knew, he and Tails were back at prison island. The hedgehog having been there before, yet not in the lower levels. He saved a rabbit girl that day.

The peach arms crossed as he felt a chill roll down his spine, gently rubbing them to regain warmth.

This place was super creepy.

Why did they need to split up again?

Sonic sighed, knowing it was probably his own fault for not staying with the young fox. But Knuckles WAS with him….That didn't bring much peace of mind to the cerulean hero, but he knew Knuckles could handle anything should it happen.

Passing a high platform, Sonic paused again as he felt as if something were staring at him. Curious, he turned backward. Seeing nothing.

With a high shrill sound, the raised platform crumbled down as the support beams gave out. The azure teen zipping to the other side of the room.

He pretended he didn't squeak in panic as his heart rate slowed again. "Ok...that happened…," he said, cautiously walking back to the now lowered platform.

His breath caught in his throat at the sight.

It was a holding capsule, smashed open from the inside out. The breaks were old minus the few rattled shards that fell from the fall from above. There was something brown and dried on the broken old glass. Beneath the grime of age and dust from the ceiling.

Sonic began to feel a really bad Aliens vibe going on.

"Ooookkkk…...Broken tube...check…..abandoned lab…..check…..creepy atmosphere….," he looked around," Check…..mysterious moving darkness in the corner, check- WAIT.," he snapped his attention back to the corner.

There was nothing.

"OK. WELP. THAT'S ENOUGH INVESTIGATING FOR ME. YEP. NOT GETTING ALIEN BABIES LAID IN MY TUMMY TODAY. NO THANKS.," he began to scoot towards the door, his head snapping towards a quick movement.

The spines on his back bristled slightly in fear as he flicked his emeralds around for a long while. His breaths quick as he tried to remain calm.

It was then he saw a pair of red eyes staring at him before darting away fearfully.

That caught the teen's attention.

Curiously, he scooted towards where they last were," Hello?," he asked quietly, pausing when something scuttled and hit a metal table with a soft yelp of panic.

Sonic's curiosity only grew at the noise. "It's ok, I won't hurt you. Promise," he said gently.

He could've sworn he saw a flash of red fur before it moved away again. There was something hiding under the table.

This just made him more determined.

Sitting down slowly, he waited. "It's ok, I won't hurt you!," he repeated, forcing himself to stay stationary.

After what seemed like hours, something finally moved away from the table.

Shakily, a starved looking ebony and red streaked hedgehog crawled out from the shadows of the underside of the table. His fur mess and unkept, a long scar going down one side of his face. The old wound making one of his startling ruby eyes dull in respect.

He was low to the ground, his white fluff brushing against the floor as he cautiously moved.

Sonic made no move as the other seemed to sniff around him, slowly coming to a halt in front of him.

"Hey there…," he said softly, the other tilting his head slightly, his upturned but ragged quills tittering softly together.

"What's your name?," Sonic asked, the rubies never leaving him.

He remained painfully still as the other shifted closer again, right up next to his knees as he sniffed further. Carefully, Sonic upturned his hand. Startling the other slightly, a hard flinch coming from the other's action.

"Oh! It's ok!," he hushed softly, the crimson orbs looking up fearfully for a moment.

"I'm Sonic…," he said softly," Do you have a name?," he asked softly.

"S….son-ic….," the other tried quietly, his deep vocal tone near a whisper. Yet the blue teen smiled and nodded," Yep, that's me!," he said gently, noticing a tiny smile on the dirty tan muzzle. Sonic let him rest his chin cautiously in his hand, a soft purr rumbling from him.

It was then he noticed the sharp claws on his feet and hands. It must've been a long time since he'd cleaned up last. Gently, he let his gloves hand rub the underside of his chin, the purr growing in volume brought a small smile to his face.

"Cute…," he said softly, letting his stiff legs unfold as the other rested more relaxed against him. He soon found him stroking his back gently, feeling each bump of his spine with a small frown. "You must be really hungry, huh fella?"

"WHAT'S GOING ON? WE HEARD A HUGE CRASHING SOUND!," a panicked gruff voice said from the doorway. The dark hedgehog let out a yelp and was quickly followed by a crackle of energy.

Startled, Sonic looked at the now empty space on his lap. "Knuckles!," he said, his arms resting on his hips with a huff," You went and scared him!"

The red echidna seemed shocked before scowled," Who? We thought you died!," he growled softly. Finally, a young kit managed to finally catch up. "Are you alright?! We got here as fast as-" the words caught in the golden fox's throat as he noticed the other hedgehog in the room. "It's him!," he said, Sonic looked confused.

"Who?"

"Project Shadow!," the kit said, fumbling with a pocket book before opening it," What files we found told about experiments to create an ultimate lifeform. Project Shadow it was called.," the kit pointed," And that's the hedgehog from the pictures in the old files! Which is weird because they're from years ago.," he added in an after thought.

Sonic felt his emeralds flick to the broken open capsule, a pang of sadness hitting him as he saw how panicked the hedgehog was. "They….experimented on him?," he asked quietly.

When he stood, he felt something brush behind his legs.

Looking down, he saw the other take shelter behind his legs. "It had something to do with Chaos energy and black arms...whatever that is," the fox said, closing the pocket book and putting it back in his bag. "So...Egghead's after...him…," the echidna said with little belief.

A small hiss from the dark hedgehog came in response.

Sonic immediately became protective. "Well I'm not letting him anywhere near Shadow!," he said. Knuckles sighed," What? It's his name!," the blue teen retorted, letting his hands rest on his hips.

"Well….we can't let him get taken by Eggman because of how powerful the files say he is…," Tails said, scratching his cheek fluff gently," And he's practically a skeleton."

"So what? One of you's gonna keep him?," the echidna looked amused.

Sonic glanced down at the shaking hedgehog, startled at how fierce he looked suddenly. "I'll take him home and clean him up," he said suddenly, catching the two off guard. "Tails can help with the check ups and stuff," he said, looking determined.

The echidna scoffed softly as he started to walk away," Whatever you say.," he muttered, ignoring the look from the fox. "Well, let's go then. The structure of this place is really unstable."

Sonic nodded, smiling down at the striped hedgehog," Come on Shad, let's go," he said, surprised that the other actually followed him out.

Suppose he grew attached to the blue hedgehog.