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English
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Published:
2025-06-25
Completed:
2025-10-27
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158,006
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16/16
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Where the Frost bites back

Summary:

In a twist of fate, it isn’t the Man in the Moon who saves Jack but an ancient Bewilderbeast, drawn to the boy’s good heart and selfless sacrifice. Reborn as a rare frost-scaled hybrid with shimmering wings and piercing glacial eyes, Jack awakens with fractured memories and instincts that scream of both human and dragon.

 

Cast out by dragons and feared by humans, Jack drifts between two worlds, until he stumbles into a ragtag bunch of oddballs who look at his wings, frost breath, and memory loss and go, “Eh, we’ve seen weirder.”

Notes:

Chapter 1

Memory: Missing
Wings: Present
Dignity: Debatable.

(This is my first fic in my third language, please be gentle)

Some drawings of what i imagine jack lookes like in this universe.
https://www.deviantart.com/artemisz16/art/When-the-frost-bites-back-art-1211903622

Chapter 1: Memory: Missing. Wings: Present. Dignity: Debatable.

Notes:

Hello everzone! This fic is officially finished! I am currently re-reading it. This was my firts fic and first everything. So the Formatting was almost nonexistend apart form sectioning. So now that I got a handle on ao3 editing. bold letters picture inserts and what not im going to go throught the whole fic, making it pretty. So if you see a discrepency with how the chapters look its probably because you read faster then I format. This one is Officialy done, save for art works i'll make or commision for it in the future.

Hopping onto two! Have a fun read!

Chapter Text

Darkness, that's the first thing he remembers.

It was dark, it was cold, and he was scared.

But then he saw it. It was so big and so bright, it seemed to chase the darkness away.

And when it did? he wasn’t scared anymore.

Why he was there and what he was meant to do, that he didn’t know. Part of him still wonders if he ever will.

 

 

Jack staggered onto the ice as the creature behind him vanished beneath the surface. Moving chunks like they were leaves in a water basin. He gasped for air, the oxigen rushing to his aching lungs. A startled grunt escaped his throat. He rushed to the water's edge, after the being, the source of comfort, but before he could submerge his feet, the surface crackled and froze solid beneath him.

Claws?

He fell backward in surprise, a puff of frozen mist spiraling around him, tried to stand on two legs, but his body felt off-balance. Instinct took over, and he shifted onto four limbs. Something brushed behind him. He turned... and there it was: a long, elegant tail of white and shimmering blue, carving patterns into the snow.

A single word echoed in his mind.
Dragon.


The thought chilled him more than the cold. Why was that terrifying? 

 

Turning slowly, he watched the tail swish again. With a cautious shake, he tested it. Yep. That was definitely part of him.

A grin crept across his face as he gave a few test hops. Snowflakes exploded into the air with every bounce. His eyes lit up in wonder. He stretched his limbs further, wings unfurling for the first time. What? He wavered, then slowly opening and closing the light membranes as if they were sails on a traders ship. A ship? His grin grew into a breathy laugh.

                                               

He began bounding across the fozen expanse, feeling it thicken beneath him with every contact. Claws providing traction. This is...New. Jump after jump, he rose higher. Wings beating uncertainly at first then harder, stronger. Lets try turning. He tipped sideways, landed face-first, and skidded across the slick surface with a gleeful holler. Ow. Shook himself off. Then he took to the air once more, this time with real momentum.

He soared and soared, climbing, pushing against the torrent faster and higher. With no real concern for the snow or the cold, until he broke through the cloud layer. The fog and silence gave way to an endless canopy of stars. Up here, everything slowed. His breath caught. The stars were so close, so vivid -

Until they vanished. He’d forgotten to flap.

Laughter burst out of him as his wings caught the wind again sending him tumbling downward in joyful chaos. He twisted in the air, letting the cold soak through him like a second skin. His limbs shook from the strain by the time he stopped chasing the invisible current, leveling out into a quiet glide. Eyes tracing the shore he emerged from, finding docks, a path, and further uphill? A light, flickering in the distance.

People.

He swooped downward, clumsily landing in a snowbank on the edge of a forest, just where the trodden path shifted to worked stone. Snow fell heavily around him, but the voices were close, inviting. Warm? The smell of winter slowly mingled with more, food, hot coal. Home? He bounded towards them with childlike excitement.

 They screamed.

Sharp objects whizzed through the air, before he could make sense of what was happening. Past his head. A misunderstanding, surely. He tried to speak, but the sounds that came out were unfamiliar to his ears. He understood their words: Dragon, Monster, but he couldn’t form them himself. Another arrow, this time it connected too. So he ran.

 

 

He learned quickly, humans didn’t welcome him. Neither did other dragons. At least dragons gave a warning. Usually.

The younger ones from both species sometimes showed curiosity, but their encounters never lasted long. Nothing ever went deeper than fleeting glances. A few encounters with angry parents thought some valuable and painful lessons.

He grew cautious.
The Years passed along with the seasons, or at least they shoukd have been. Flowers and birds meant spring right? The snow clung to him never let them thrive for long. With the prepetual cold he stopped counting. Eventually it got better. Slowly but surely the frigid aura subsided, letting more and more in. Seasons started to show again.

He made an island his home, a quiet, dragonless place. Spent his days in relative calm, making tiny snow or stone sculptures depending on the weather. At least, until a newcomer arrived: a mother dragon seeking a safe lagoon to hatch her young. Usually he would scare off most dragons not wanting the inevitable clash with them. Better to establish his territory early. But he couldn’t do that to a new mom.

Jack watched from the cliffside as she nudged her eggs into the water. A few excruciatingly long moments later, four tiny hatchlings broke the surface like playful seals. Not that he panicked when he thought they might be drowning. Nope. Definitely not. He didn’t step out from the shade of the cliff with the intention to dive for the babies, despite the fact that he can’t actually break water surfaces properly. That would be idiotic.

Naturally the mother spotted him. Puffed a low warning, positioning herself protectively, putting herself between Jack and her children. Dejected, but not surprised Jack backed off. He had thnings to do anyway. Right. Make friends with the neighbours? Catastrophic faliure.

Fishing is next on the agenda. A disaster, as usual.

Every time he reached into the water, it froze solid around his claws. Using his face wasn’t much better, soaked face equaled scraping ice for the rest of the day. Not ideal. Sometimes he got lucky and a fish actually stuck to the fast forming block. just... not this time. Berries and small game it is. Plenty of that on the island. Steering clear of the strand of beach nearest his cave. That entrance was a little too close to the new family’s comfort zone. He'll just have to tough it out.

Still, Jack watched.

The mother guarded the lagoon like a true protector. She gave more and more annoyed Huffs at Jack. So he started calling her Huffjaw in his head.

Since that first awakening on the ice, Jack had never managed to regulate his body heat. No matter how long he basked, warmth never quite reached his core. Yet even the harshest blizzards didn’t faze the dragon part of him. Now the areas not cowered by scales? They chilled fast.

His cave, tucked deep in a cavern system off the shore, held the warmth he craved. The soft pile of furs he’d found, totally not stolen awaited his return. Sunlight used to pour through the crevices, warming the space just right.

But Huffjaw still blocked the entrance.

So instead, Jack sprawled at the far end of the beach. Away from the hatchlings, as far as possible. Every now and then, he had to reposition himself when the frost of his own presence started cooling the sand. He yawned as he settled on his latest spot. The waves whispered against the shore, making him close his eyes, lulled by the sound. He was hungry and exhausted, the heat of the beach did exactly what it was supposed to do, warming his chest and arms. Then… a new warmth. Wet, yet rough wriggly warmth.

He cracked one eye open, cautiously lifting a wing.

The hatchlings were snuggling up against him like oversized, scaly caterpillars. They purred with pleasure in the cold he radiated. He froze - no pun intended. They didn’t stir, just nestled closer, small sighs echoing by his side. He didn't dare to move. They stayed like that for hours. He was the happiest he’d ever been. They sought his presence and enjoyed it. No way in hell he was gonna end it sooner then necessary. He was content staying here forever if it would mean more warm cuddles.

 Jack stiffened at the sound of an angry mother landing. She bolted towards her children in a panic, steps thundering even on the soft sand, only halting as she saw them. Safely tucked beside him. She sniffed Jack thoroughly, nostrils flaring. He held perfectly still. Don't move, don't move...

After an agonizing minute she rumbled softly.

She took a few steps back, satisfied, regurgitating a pile of fish freshly caught fish. A single burble is all it took, the four little nuggets wriggled out from under Jacks wings, rushing the pile of food.  Instantly missing the heat, Jack slowly streched began backing away,  when a smaller nudge caught his eye. The mother rolled a single fish toward him.

He blinked, then delicately took it, waiting for anz protest, when none came he swallowed it whole. A warm trill rose from his throat as the hatchlings clambered back towards him to play.

From that day on, their quiet companionship grew.

Jack adapted. So did they. Days blurred into laughter and pawprints, endless fun. Whenever the hatchlings grew too warm, their mother would gently roll them into the ocean, where they flopped into the waves, steam hissing from their scales.


Jack named them after the sounds they made when they touched the water: Crackle, Burp, Whistle and Fizz. He looked after them while mother was fishing.

When visitors, other dragons unexpectedly neared the island, Jack led the young ones deeper into the tunnels. He showed them a sheltered cave, safe and snug. Not his own, not yet. The tunnels leading ythere were too narrow, and most of his belongings were, well... flammable. He chased anyone posing a danger to the babies. Only very rarely he lost a battle. Huffjaw took care of any threat he could not.

They remained underground on those days. Only the mother ventured out for food. Jack stayed behind, keeping the little ones cool and safe. Tending to his own wounds.

And for once in his life, that seemed like enough.

 

 

Winter rolled in a few month later.
This particular storm hadn’t let up for days. Sheets of snow and wind thick enough to cloak a dragon in flight. Jack took full advantage. He launched himself into the clouds, wings slicing through the air as he dove and tumbled through the howling currents. The roar of the wind, the way it tugged at his scales and tossed flurries around him, it was freedom. He let out a screech of delight, banking hard and looping through a gust like he was chasing his own echo.

Just as he began a steep dive, building up speed, a shadow flashed across his path, Fluid and wide and distinctly two headed.

A Zippleback. He smirked to himself.

They weren’t too fast, nor were they aggressive. In the rare occasion the passed through his island they seemed playful. And well a little fun never hurt anyone. He aligned himself, planning to slip neatly between the two swaying necks with a cocky flick of his tail.

But then, contact.

Not physical. Visual.

He locked eyes with the dragon’s right head—and something entirely unexpected looked back.

Not a dragon.

A human.

Panic slammed into him. He twisted midair, wings flaring out too late, and went tumbling backward through the blizzard. His breath came in icy clouds, ragged and sharp, as he tried to gather himself again.

Voices echoed through the storm, distant. Panicked.

Another shape cut through the cloud, a Nadder.

Jack hissed, low and instinctive. He hated Nadders. Fast, Deady, One of the Hottest flames, not at all playfull.

This is Just great.

 

He dropped back into the cloudbank, concealing himself in the swirling white. Another human. A girl. She was saying something-

"Tuffnut, stay quiet! We’re supposed to be scouting stealthily"

Then her eyes locked onto Jack.

Two humans. Two dragons. Too close. Too dangerous. He couldn’t lead them back to the little ones. HuffJaw, he had to warn her.

He dove.

One of the riders shouted after him, “Hiccup!” That meant nothing to Jack, he wasn’t sticking around to guess.

The Nadder gave chase, wings sharp and fast. It let out a stream of hot fire, narrowly missing him. Jack twisted midair and blew out a burst of cold fog, flipping upside down beneath them. As the Nadder lunged, spines flew, one slicing into Jack’s shoulder with a jagged stabbing of pain. He snarled and hurled an ice bolt at the Nadder’s tail, freezing the remaining spines in place just long enough to slow it down.

The girl yelled. Jack didn’t wait to hear what. He disappeared into the blizzard, wings stretched wide, gliding silently back toward the island.

A high-pitched whine struck his ears, growing louder. Something was on his tail.

He dove hard, skimming along jagged cliffs and weaving through icy pillars. He tried to stop and hide behind a few but the dark dragon kept locking in on him. He kicked off stone walls to change direction midflight, searching desperately for one of the hidden cracks he remembered, barely more than shadows in the mountainside. A purple blast exploded behind him. Smoke filled the air.

He used that as distraction let more fog seep into the air, obscure, hide. He spun, folding his wings, and dove straight into a fissure. Rock scraped his sides, and he slammed into the stone at full speed. Scrambling to his feet and hands, he bolted deeper in the cavern system, zigzagging through narrow tunnels, until he collapsed in a dead end. Frost spiraled out from his body in trembling waves, ice crawling up the walls. He tucked into himself, shivering, and let darkness take him.

A gentle croon stirred him.

HuffJaw. Her massive head nudged him softly, and behind her, four tiny forms scrambled forward, cooing and chirping. They curled up against him, their presence calming. Jack exhaled and slumped back into unconsciousness.

Next time he came to he mustered the strength to make it back to his cave leaning on the thunderpede as they slowly made their way through the passages. He flew up on the lest leg where she didn’t fit anymore. Crudely treating hid wounds then promptly before passing out.

When he woke again, it was in his own cot. His shoulder was bandaged, awkward but functional, the rags were discarded in a bloody heap beside him. He lay sprawled across his fur pile, soaking in the warmth… though something about the heat felt off.

Too warm.

He grunted and rolled off, dragging his aching limbs toward the tunnels below. He soared down. The air thickened with heat as he descended. At the lowest chamber, he found them, his little thunderpedes, panting in a shallow pool of molten rock. The room simmered with suffocating warmth.

Jack fired a few shots of frost against the walls, cooling them. Trying to make the heat bearable for himself. He moved closer, letting his ice spread across the stone floor. Steam hissed around his claws. The babies perked up immediately, squealing in delight as they scampered over to him, nuzzling his chilled wings and tail. He hissed a bit at the contact letting even more frost into the air to ease the little ones just enough so their touch would be bearable.

He lay with them for a while, but his mind wouldn’t settle. He didn’t know how long he’d been out, Huffjaw never let the babies get this bad. She should have returned by now.

His stomach growled. The little ones looked hungry too.

With a weary groan, he stood and headed back into the snowstorm. The wind howled against his hurting body, but Jack pushed through, sinking his claws into the snow to drag back a decent-sized deer. Poor stag didn’t stand a chance in this weather, even injured, he was in his element. As he neared the cave entrance, he caught something strange in the sky.

Flashing Lights.

Not lightning.

Dragons.

 

Jack froze, then abandoned the deer and launched into the air. Snow whipped around him as he climbed into the chaos above. Something was wrong. Very wrong.

Dragons wheeled through the air, some fleeing, others colliding. Flaming projectiles streaked across the sky.

He dodged them with sharp jerks and turns, crying out, calling for Huffjaw.

No answer.

 

Then, humans. The girl on the Nadder. Another rider on a Gronckle. Their attention seemed focused below. Jack spiraled through the clouds, the temperature plummeting as panic took hold. The snow thickened. Hail began to fall, bludgeoning dragons and riders alike. He could feel the temperature bending around his body, ice forming in the storm’s core.

Then, something new. A high pitch he recognized. Dark sleek wings. A rider standing tall on its back, scanning the clouds. A Windgnasher struggled under them, one leg bound by a rope, tethered somewhere below. Without hesitation, the human on the dark dragon crouched, then jumped.

 

Jack reeled in surprise. As wings unfurled from the human’s back.

He chuffed in disbelief as a dorsal fin snapped outward from the figure’s form. The human glided with practiced ease, slashing the rope from the tethered dragon clean before banking back toward the coal black one.

Then a flash of hail struck his wing.

He faltered. Swerved.

The Windgnasher’s tail clipped him midair with a sickening crack.

The human fell.

Without thinking, Jack dove after him.

 

The storm roared around them. Jack’s wings folded tight to his sides as he gained speed, tail angled to steer the wind. He reached the figure just before the sharp black edge of a ship collided with them. He grabbed him and swerved.

A sonic screech echoed overhead, but Jack didn’t look back.

 

He veered hard and sped around the island, vanishing into the tunnels once more. Twisting through stone corridors, he carried the figure gently into his den and laid him on his cot.

A crack lined the side of his head. Jack hovered, crooning anxiously. The figure stirred, breathed.

Alive.

Jack let out a heavy sigh and moved to investigate the wound. The scales were cracked and sunken until some of them fell away to reveal…

Hair.

Skin.

Oh. A helmet.

Jack gently pried it free.

A young man—blood streaked across one side of his face, jaw clenched in pain, but breathing steady.

Jack padded to the back of the cave, melting a patch of ice to wet his last remaining cloth. He mourned its loss. Winter made scavenging nearly impossible. Fewer Vikings doing laundry outdoors meant fewer supplies left out to borrow.

Still. Carefully, he wrapped the cloth around his claw and cleaned the blood from the human’s brow. The man was mumbling something about how he would prefer hands. Jack scoffed, like he had many options.

When he was finished, he sat back on his haunches, exhaling slowly.

What in the name of Thor was he doing?

Helping lost children through a storm was one thing. He was used to the threats and screams. But bringing one here, to his den, puts them all at risk.

Yet…

This human had saved a dragon. Risked his life without hesitation.

And the dragons he traveled with, though he’d only caught glimpses, hadn’t looked abused. They’d looked…bonded.

Jack sighed again, rubbing the sore spot where the Nadder’s spine had struck him. He couldn’t just toss this one outside. Not now. He’d never survive the storm.

His stomach rumbled. His ears perked up in anticipation. The deer.

He glanced at the sleeping figure, then trotted down to the northern tunnel entrance. The snow had begun to bury the carcass. It took great effort to dig it out. His jaws and claws got coated in its blood as he unintentionallz mangled the thing while dragging it out of its frozen spot..

He hauled the deer to the thunderpedes first. They squealed in joy, burning the meat into sizzling portions in seconds. Jack tore off a leg with practiced ease and left them to the rest.

Back up through the winding tunnels he went, the leg clutched in his tail. He reached the main chamber, halted when he heard shuffling ahead..

He padded softly to the entrance, letting out a curl of cold mist.

The human was standing, flaming weapon drawn.

Pointing at his belongings.