Disclaimer: I don't own any character, name, place या whatever mentioned in this story, everything belongs to Cartoon Network, and Pendlenton Ward. And THIS IS SERIOUSLY NOT MY STORY.
Adventure Time: The Awakening of Heroes!
I: The Gathering
Tale 1: A usual beginning!
Inside BMO's screen…
Two warriors stare at each other waiting for their fight to begin. The announcer starts the count: "3 – 2 – 1…GO!" The warrior on the left, an 8-bit ninja, makes the first हटाइए and starts running towards his enemy, an 8-bit pirate with a big black hat.
"WOW! This battle has become an explosive display of awesome techniques and extremely dangerous moves as the two mortal enemies drop blood and teeth everywhere on the now destroyed stage." The video game narrator exclaimed. "Things are becoming pretty intense as a powerful blow attempts to bring our battle to an epic endi-…"
"Aw fudge! Beemo's batteries run out! Jake did आप remember to recharge Beemo like I told आप this morning?" A young boy with a funny white hat with भालू ears on चोटी, शीर्ष said.
"Define recharge." The yellow bulldog अगला to him answered.
"Jake!"
A large group of फ्रेंड्स were sitting around the सोफ़ा, सोफे where two girls tried to kill each other, inside the video game of course. Most of them held a glass filled with "Pepcoke" soda and a bunch of पॉपकॉर्न was scattered on the floor. It was around 11:30 pm and the stars shined bright over the पेड़ fort, Finn and Jake's home.
They were planning to enjoy the friday night with a small video game contest as they did every महीना when its name ended with "-ber". The most expected fight was always between the most opposite rivals आप have ever known; Marceline The Vampire क्वीन and Princess Bubblegum, but it seems that today wasn't the दिन to resolve their differences in the virtual battle field. Now they'll have to wait until September...and they were on December...bad luck guys.
"I'm sorry Finn…man I was busy preparing the snacks for tonight's video game tournament."
"What tournament?" Replied Finn a bit upset.
"Yeah dude how are we supposed to finish our match without Beemo, आप genius?" A girl with long black hair कहा while hitting her head repeatedly with one of the controllers.
"Hey Marcy it's okay a least आप were saved from being humiliated byyyy me!" Another girl कहा pointing herself with a big smile on her face.
"You? Haha what kind of joke is that princess? या has the poor Bonnibel just forgotten that my ninja was about to destroy your pathetic pirate?" The black haired girl कहा comically.
"Oh yeah look at me my name is Marceline and I'm better than all of आप stupid mortals!"
"Indeed." The vampire क्वीन कहा at the time she crossed her arms and raised her head up with pride.
"Ugh! आप are impossible!"
"P.B., Marcy! Calm down there's no need to fight." Finn intervened jumping over the सोफ़ा, सोफे and sitting between them.
"See? Even Finn is और educated than you." Princess Bubblegum कहा pulling him close to her.
"Sure everyone knows ninjas are waaay much better than pirates." A smiling Finn said.
"Yes! …No…What?" P.B. कहा totally confused.
"Hehe that's my little hero. Give me five runt!" Marceline कहा sticking out her forked tongue at the princess.
"Yeah Marcy! ...Wait who are आप calling runt?"
"No, no, please bro, ninjas are cool but I have to say pirates are pretty awesome." This time it was Jake the dog talking. "I mean just think about it: They are rude, they never bath and they live in the sea having adventures and finding treasures! Hehe I could write a song about it…ah the sea." he watched outside the window sighing.
"The sea? आप mean the ocean right? You're sick man." Finn replied frowning.
"Don't tell me our big bad hero is afraid of the ocean! Hehe." Marceline कहा laughing over the सोफ़ा, सोफे while patting Finn's head .
"Don't bother he is working on it! Right buddy?" Jake said.
"Yeah…"Finn replied blushing a little.
"Hehe! And what about आप have आप worked on your…VAMPIRE PROBLEM YEARRRGH!" The vampire क्वीन yelled दिखा रहा है her fangs and making her eyes explode in fire. "Hehehe."
"YAAAAAARGH! NO! I MEAN YESSSS…"Jake screamed throwing himself behind the couch. "You know I'm not afrai…afraid of आप any…mo mo more."
"Hahaha mo…mo…mo…" she कहा mimicking him "Really? Ha! Then why are आप shaking?" she asked noticing his shivers.
"Because आप freak me out when आप do stuff like that. Any normal person would!"
"Hahaha I'm never going to get tired of this." Marceline कहा while passing her arm around Jake's shoulder without him noticing. "BOO!"
"Mommy!" Everyone in the room laughed. "What's so funny? Yeah! I still call out for my mommy. BIG DEAL! I bet all of आप do!" Jake कहा somewhat offended.
"Guys! C'mon stop arguing about pirates, ninjas and stuff, I'm lumping bored!"
"Okay L.S.P (Lumpy अंतरिक्ष Princess) do आप have any other suggestion since Jake ruined our video game contest?" Finn asked.
"HEY!" the yellow dog replied trying to defend himself.
"Oh shut the lump up, आप known it's true puppy, and no, I have no idea, आप know what? It's getting late, maybe we should end this "party" and return to our homes. If I don't get a proper rest there's a chance that my beautiful face turns a little bit ugly…I don't want to take any risks if आप know what I mean." L.S.P. Said.
"…Oh… sure? Beautiful??" Answered Finn a little bit unsure.
"YAAAAWWWNNN! I think miss beautiful here has a point." Marceline कहा floating over the सोफ़ा, सोफे resting her head on her own arms. "This is getting pretty boring, I have better things to do and I don't have the whole night…" "You know what I mean." the vampire mimicked L.S.P'S voice.
"I hate to say it but she's right guys, I need to get a good rest too, tomorrow is going to be a very important day", "you know what I mean." Princess Bubblegum कहा mocking the lumpy princess as well.
"Will आप please stop copying me? Glob…." L.S.P. shouted.
"So I guess that's it for tonight, huh?" Finn said.
"Yeah, sorry for ruining the party, I can be pretty distracted", "if आप know what I mean." Jake कहा chuckling.
"I कहा STOP IT!"
"Whatever, well, see आप later guys." Marceline कहा flying outside the window.
"Bye Marcy!" Finn कहा waving at her.
"Okay time for me to go too, L.S.P do आप want me to give आप a ride?" P.B. asked while riding Lady Rainicorn's back.
"Oh, but of course! But आप need to know that I'm living with my parents again…so आप better take me to the Lumpy अंतरिक्ष Kingdom fast या they will get mad at me if आप know what I mean."
"Sure, now hold on tight I don't want to chase आप if आप fall off…you know what I mean." Princess Bubblegum कहा giggling.
"Haha…funny funny huh? HURRY UP! Darn it…" L.S.P. कहा crossing her arms and turning her face away.
"Bye guys!" P.B. कहा taking off from the पेड़ Fort.
"잘 자거라, 아가야!"Lady Rainicorn कहा to Jake.
"Hehehe…bye girl." Jake कहा blushing.
/
After everyone leaved the two "brothers" cleaned up the mess on the living room and climbed the stairs to get inside their bedroom. A small candle अगला to Finn's बिस्तर illuminated their room. Jake's बिस्तर consisted of an opened cabinet's drawer with a huge grey cushion while Finn's was covered द्वारा various monster's pelts, probably killed द्वारा himself and an नारंगी, ऑरेंज sleeping bag. I don't know why but both beds look very cozy to me.
"Hey Jake, even if we couldn't finish our tournament, it still was a great night, don't आप think so dude?" Finn कहा while sitting on his बिस्तर putting and his red pajama on. "Oh I'd better put Beemo in his charge station…Here आप go buddy!"
"Yeah even though things didn't go out as planned, whenever आप are spending a good time with your best friends, I always have the feeling that everything will be all right." Jake कहा covering himself with his blanket.
"Whoa आप sound like a philofffis-fifflosophiss-piss-peepee-poopoo…whatever."
"Philosopher, Finn. I don't know maybe I start saying strange things whenever I'm awake this late." Jake कहा yawning.
"Yeah…" he replied "Talking about strange things...Whenever I'm awake this late, I can't help but thinking in Flame princess…where could she be now? Does she feel alone? I'd wish she could have spent the night with our फ्रेंड्स too…" Finn whispered staring at the ceiling.
"Finn, my little brother don't worry, I'm sure some day... she'll come back, and I hope she learns how to control her emotions because I hate getting a toasted butt…Glob it still hurts." Jake कहा rubbing his short tail.
"Hehe, I hope so too! Well goodnight bro." Finn कहा blowing out the candle in his night table.
"Yawnnn…Goodnight…bro." Jake replied finally falling asleep.
And so our हीरोस went to sleep…it was a fresh night, they've had fun and everything seemed to be all right…no, nothing could be wrong…or could it?
/
"Tralalala…you look so cute sitting in your boat…I wanna suck out your eyeballs and ripe OUT your throat…yes I wanna…suck out your eyeballs and drink OUT your blood!" Marceline sang while flying over the grasslands on her way home.
"Man it's late! I'd better hurry या the sun will come out and burn me…hehe!" she laughed at her own joke "It's good for a song…I'd better hurry या the sun will come out and burn me! Glob I'm a musical genius hehe!" A shiver went down her spine "Huh?" She quickly stopped herself. "I feel something strange in the air…" Marceline frowned "Whatever it is… I've felt it before…and I know it means something bad!" she started flying as fast as she could. "I can't let my guard down" the vampire whispered "I just hope everyone arrives घर safely" she thought "Shoot... I've become pretty soft-hearted…"
/
Marceline is right something terrible is about to happen, the air was suddenly filled with a chilling breeze, and she couldn't help but to sense death around her…
What terrible fate awaits our heroes? Will everyone in the land of Ooo be save? Will Finn and Jake have the strength to fight it?...
Adventure Time: The Awakening of Heroes!
I: The Gathering
Tale 1: A usual beginning!
Inside BMO's screen…
Two warriors stare at each other waiting for their fight to begin. The announcer starts the count: "3 – 2 – 1…GO!" The warrior on the left, an 8-bit ninja, makes the first हटाइए and starts running towards his enemy, an 8-bit pirate with a big black hat.
"WOW! This battle has become an explosive display of awesome techniques and extremely dangerous moves as the two mortal enemies drop blood and teeth everywhere on the now destroyed stage." The video game narrator exclaimed. "Things are becoming pretty intense as a powerful blow attempts to bring our battle to an epic endi-…"
"Aw fudge! Beemo's batteries run out! Jake did आप remember to recharge Beemo like I told आप this morning?" A young boy with a funny white hat with भालू ears on चोटी, शीर्ष said.
"Define recharge." The yellow bulldog अगला to him answered.
"Jake!"
A large group of फ्रेंड्स were sitting around the सोफ़ा, सोफे where two girls tried to kill each other, inside the video game of course. Most of them held a glass filled with "Pepcoke" soda and a bunch of पॉपकॉर्न was scattered on the floor. It was around 11:30 pm and the stars shined bright over the पेड़ fort, Finn and Jake's home.
They were planning to enjoy the friday night with a small video game contest as they did every महीना when its name ended with "-ber". The most expected fight was always between the most opposite rivals आप have ever known; Marceline The Vampire क्वीन and Princess Bubblegum, but it seems that today wasn't the दिन to resolve their differences in the virtual battle field. Now they'll have to wait until September...and they were on December...bad luck guys.
"I'm sorry Finn…man I was busy preparing the snacks for tonight's video game tournament."
"What tournament?" Replied Finn a bit upset.
"Yeah dude how are we supposed to finish our match without Beemo, आप genius?" A girl with long black hair कहा while hitting her head repeatedly with one of the controllers.
"Hey Marcy it's okay a least आप were saved from being humiliated byyyy me!" Another girl कहा pointing herself with a big smile on her face.
"You? Haha what kind of joke is that princess? या has the poor Bonnibel just forgotten that my ninja was about to destroy your pathetic pirate?" The black haired girl कहा comically.
"Oh yeah look at me my name is Marceline and I'm better than all of आप stupid mortals!"
"Indeed." The vampire क्वीन कहा at the time she crossed her arms and raised her head up with pride.
"Ugh! आप are impossible!"
"P.B., Marcy! Calm down there's no need to fight." Finn intervened jumping over the सोफ़ा, सोफे and sitting between them.
"See? Even Finn is और educated than you." Princess Bubblegum कहा pulling him close to her.
"Sure everyone knows ninjas are waaay much better than pirates." A smiling Finn said.
"Yes! …No…What?" P.B. कहा totally confused.
"Hehe that's my little hero. Give me five runt!" Marceline कहा sticking out her forked tongue at the princess.
"Yeah Marcy! ...Wait who are आप calling runt?"
"No, no, please bro, ninjas are cool but I have to say pirates are pretty awesome." This time it was Jake the dog talking. "I mean just think about it: They are rude, they never bath and they live in the sea having adventures and finding treasures! Hehe I could write a song about it…ah the sea." he watched outside the window sighing.
"The sea? आप mean the ocean right? You're sick man." Finn replied frowning.
"Don't tell me our big bad hero is afraid of the ocean! Hehe." Marceline कहा laughing over the सोफ़ा, सोफे while patting Finn's head .
"Don't bother he is working on it! Right buddy?" Jake said.
"Yeah…"Finn replied blushing a little.
"Hehe! And what about आप have आप worked on your…VAMPIRE PROBLEM YEARRRGH!" The vampire क्वीन yelled दिखा रहा है her fangs and making her eyes explode in fire. "Hehehe."
"YAAAAAARGH! NO! I MEAN YESSSS…"Jake screamed throwing himself behind the couch. "You know I'm not afrai…afraid of आप any…mo mo more."
"Hahaha mo…mo…mo…" she कहा mimicking him "Really? Ha! Then why are आप shaking?" she asked noticing his shivers.
"Because आप freak me out when आप do stuff like that. Any normal person would!"
"Hahaha I'm never going to get tired of this." Marceline कहा while passing her arm around Jake's shoulder without him noticing. "BOO!"
"Mommy!" Everyone in the room laughed. "What's so funny? Yeah! I still call out for my mommy. BIG DEAL! I bet all of आप do!" Jake कहा somewhat offended.
"Guys! C'mon stop arguing about pirates, ninjas and stuff, I'm lumping bored!"
"Okay L.S.P (Lumpy अंतरिक्ष Princess) do आप have any other suggestion since Jake ruined our video game contest?" Finn asked.
"HEY!" the yellow dog replied trying to defend himself.
"Oh shut the lump up, आप known it's true puppy, and no, I have no idea, आप know what? It's getting late, maybe we should end this "party" and return to our homes. If I don't get a proper rest there's a chance that my beautiful face turns a little bit ugly…I don't want to take any risks if आप know what I mean." L.S.P. Said.
"…Oh… sure? Beautiful??" Answered Finn a little bit unsure.
"YAAAAWWWNNN! I think miss beautiful here has a point." Marceline कहा floating over the सोफ़ा, सोफे resting her head on her own arms. "This is getting pretty boring, I have better things to do and I don't have the whole night…" "You know what I mean." the vampire mimicked L.S.P'S voice.
"I hate to say it but she's right guys, I need to get a good rest too, tomorrow is going to be a very important day", "you know what I mean." Princess Bubblegum कहा mocking the lumpy princess as well.
"Will आप please stop copying me? Glob…." L.S.P. shouted.
"So I guess that's it for tonight, huh?" Finn said.
"Yeah, sorry for ruining the party, I can be pretty distracted", "if आप know what I mean." Jake कहा chuckling.
"I कहा STOP IT!"
"Whatever, well, see आप later guys." Marceline कहा flying outside the window.
"Bye Marcy!" Finn कहा waving at her.
"Okay time for me to go too, L.S.P do आप want me to give आप a ride?" P.B. asked while riding Lady Rainicorn's back.
"Oh, but of course! But आप need to know that I'm living with my parents again…so आप better take me to the Lumpy अंतरिक्ष Kingdom fast या they will get mad at me if आप know what I mean."
"Sure, now hold on tight I don't want to chase आप if आप fall off…you know what I mean." Princess Bubblegum कहा giggling.
"Haha…funny funny huh? HURRY UP! Darn it…" L.S.P. कहा crossing her arms and turning her face away.
"Bye guys!" P.B. कहा taking off from the पेड़ Fort.
"잘 자거라, 아가야!"Lady Rainicorn कहा to Jake.
"Hehehe…bye girl." Jake कहा blushing.
/
After everyone leaved the two "brothers" cleaned up the mess on the living room and climbed the stairs to get inside their bedroom. A small candle अगला to Finn's बिस्तर illuminated their room. Jake's बिस्तर consisted of an opened cabinet's drawer with a huge grey cushion while Finn's was covered द्वारा various monster's pelts, probably killed द्वारा himself and an नारंगी, ऑरेंज sleeping bag. I don't know why but both beds look very cozy to me.
"Hey Jake, even if we couldn't finish our tournament, it still was a great night, don't आप think so dude?" Finn कहा while sitting on his बिस्तर putting and his red pajama on. "Oh I'd better put Beemo in his charge station…Here आप go buddy!"
"Yeah even though things didn't go out as planned, whenever आप are spending a good time with your best friends, I always have the feeling that everything will be all right." Jake कहा covering himself with his blanket.
"Whoa आप sound like a philofffis-fifflosophiss-piss-peepee-poopoo…whatever."
"Philosopher, Finn. I don't know maybe I start saying strange things whenever I'm awake this late." Jake कहा yawning.
"Yeah…" he replied "Talking about strange things...Whenever I'm awake this late, I can't help but thinking in Flame princess…where could she be now? Does she feel alone? I'd wish she could have spent the night with our फ्रेंड्स too…" Finn whispered staring at the ceiling.
"Finn, my little brother don't worry, I'm sure some day... she'll come back, and I hope she learns how to control her emotions because I hate getting a toasted butt…Glob it still hurts." Jake कहा rubbing his short tail.
"Hehe, I hope so too! Well goodnight bro." Finn कहा blowing out the candle in his night table.
"Yawnnn…Goodnight…bro." Jake replied finally falling asleep.
And so our हीरोस went to sleep…it was a fresh night, they've had fun and everything seemed to be all right…no, nothing could be wrong…or could it?
/
"Tralalala…you look so cute sitting in your boat…I wanna suck out your eyeballs and ripe OUT your throat…yes I wanna…suck out your eyeballs and drink OUT your blood!" Marceline sang while flying over the grasslands on her way home.
"Man it's late! I'd better hurry या the sun will come out and burn me…hehe!" she laughed at her own joke "It's good for a song…I'd better hurry या the sun will come out and burn me! Glob I'm a musical genius hehe!" A shiver went down her spine "Huh?" She quickly stopped herself. "I feel something strange in the air…" Marceline frowned "Whatever it is… I've felt it before…and I know it means something bad!" she started flying as fast as she could. "I can't let my guard down" the vampire whispered "I just hope everyone arrives घर safely" she thought "Shoot... I've become pretty soft-hearted…"
/
Marceline is right something terrible is about to happen, the air was suddenly filled with a chilling breeze, and she couldn't help but to sense death around her…
What terrible fate awaits our heroes? Will everyone in the land of Ooo be save? Will Finn and Jake have the strength to fight it?...
the scene start with an alarm ringing at 06:00 AM so finn and jake wake up,so they get ready for school,so theyre कहा bye to joshua and margaret (their parents)
while in the way,they met bonnibel,so they walk together,when they walk in the corridor,they met tiffany,finn's enemy from other class,
tiffany:well well,who is it now(intimidate)
finn:what do आप want now tiffany
tiffany:oh i'm just pass द्वारा and (suddenly confront finn)
finn:what the.. आप shrimphead!
so they had a great fight jake helps finn and bonnibel just watch them fight and finn wins,tiffany runs to his class
finn:yea run आप wimp
so the go to the class
to be continued
ps:sorry for the bad english,i'm just a kid from jakarta
while in the way,they met bonnibel,so they walk together,when they walk in the corridor,they met tiffany,finn's enemy from other class,
tiffany:well well,who is it now(intimidate)
finn:what do आप want now tiffany
tiffany:oh i'm just pass द्वारा and (suddenly confront finn)
finn:what the.. आप shrimphead!
so they had a great fight jake helps finn and bonnibel just watch them fight and finn wins,tiffany runs to his class
finn:yea run आप wimp
so the go to the class
to be continued
ps:sorry for the bad english,i'm just a kid from jakarta
Shelby, Shelby!
Yes Jake?
um mm, we're going for a walk in the forest, stay here and watch the house cuz we are taking BMO as well.
yes Jake
(Finn,Jake and BMO go out)
Sooooooooo, what to do? what to do..
(NEPTR pops out)
Hello Shelby, wanna play hide and seek?
Nah.
oh man!
mmmmm, why don't i trash a party, i'll call all (shelby is calling all his friends)
the door घंटी, बेल rings...
come on in guys
हे Shelby, i bought snacks
nice one Bob!
i gots some games...
awesome!
so the worms set the party... then it was party time!
AFTER SOME HOURS....
oh my glob, i feel like im about to explode!
(the door opens)
Shelby, what have आप done!?
Oh god Shelby, आप jacked up our place.
Get out worms, get! yeah that's right!
And आप Shelby, Don't आप ever, ever mess with me again!
(shelby went back to jake's viola, crying)
Yes Jake?
um mm, we're going for a walk in the forest, stay here and watch the house cuz we are taking BMO as well.
yes Jake
(Finn,Jake and BMO go out)
Sooooooooo, what to do? what to do..
(NEPTR pops out)
Hello Shelby, wanna play hide and seek?
Nah.
oh man!
mmmmm, why don't i trash a party, i'll call all (shelby is calling all his friends)
the door घंटी, बेल rings...
come on in guys
हे Shelby, i bought snacks
nice one Bob!
i gots some games...
awesome!
so the worms set the party... then it was party time!
AFTER SOME HOURS....
oh my glob, i feel like im about to explode!
(the door opens)
Shelby, what have आप done!?
Oh god Shelby, आप jacked up our place.
Get out worms, get! yeah that's right!
And आप Shelby, Don't आप ever, ever mess with me again!
(shelby went back to jake's viola, crying)
Hey, guys! I'm sorry to bring up a sore subject but after looking on a few क्लब्स I found out how some people have easily bagged a medal.
They were here first, and I mean it, literally. All आप need is some major club activity in the early days of the site and you'll be an instant fan, then you'll progressively rise up and up every time आप make a move. Eventually, you're on the चोटी, शीर्ष five in the page.
I haven't tried it myself, and I don't plan to, but this is the most evident way I can find.
And another thing I noticed is how आप हटाइए towards a much higher ranking if आप write articles. Something I noticed when I wrote a few लेखाए here (My rank was moved three times).
So that's all! Don't try and point fingers on who आप consider the culprits are, true as it may be, and we don't know. It isn't supposed to be a serious subject matter, but then I brought it up, lol, never mind. I just wish to inform you.
They were here first, and I mean it, literally. All आप need is some major club activity in the early days of the site and you'll be an instant fan, then you'll progressively rise up and up every time आप make a move. Eventually, you're on the चोटी, शीर्ष five in the page.
I haven't tried it myself, and I don't plan to, but this is the most evident way I can find.
And another thing I noticed is how आप हटाइए towards a much higher ranking if आप write articles. Something I noticed when I wrote a few लेखाए here (My rank was moved three times).
So that's all! Don't try and point fingers on who आप consider the culprits are, true as it may be, and we don't know. It isn't supposed to be a serious subject matter, but then I brought it up, lol, never mind. I just wish to inform you.
Fathers and Sons
PROLOUGE: EXPERIMENTS
"Thank आप for like saving my life Finn and Jake."LSP said. LSP ran off. "Bye LSP."Finn said. "Phew! What a दिन man."Jake कहा as they walked along. But they didn't notice that Ice King was lonely. Despair. Loneliness. All he wanted was something और than a princess. He just can't put his finger on it. Maybe if he steals some hair from Finn, he would know the answer to his problem.
Later that evening when Finn and Jake were asleep, the Ice King flew carefully inside. All he brought was a pair of scissors. He gently removed Finn's hat, cut a piece of Finn's hair, put the hat back from Finn and flew away. Ice King has an installed DNA scanner that was kept in for years. He opened it, cut his beard, put Finn's hair and his beard in the scanner and waited for two hours.
2 hours later...
Ice King heard a beep signal. He woke up. He checked and discoverd the truth.
PROLOUGE: EXPERIMENTS
"Thank आप for like saving my life Finn and Jake."LSP said. LSP ran off. "Bye LSP."Finn said. "Phew! What a दिन man."Jake कहा as they walked along. But they didn't notice that Ice King was lonely. Despair. Loneliness. All he wanted was something और than a princess. He just can't put his finger on it. Maybe if he steals some hair from Finn, he would know the answer to his problem.
Later that evening when Finn and Jake were asleep, the Ice King flew carefully inside. All he brought was a pair of scissors. He gently removed Finn's hat, cut a piece of Finn's hair, put the hat back from Finn and flew away. Ice King has an installed DNA scanner that was kept in for years. He opened it, cut his beard, put Finn's hair and his beard in the scanner and waited for two hours.
2 hours later...
Ice King heard a beep signal. He woke up. He checked and discoverd the truth.