Rage of the Mountain Prince

gaster frantically packs pieces of paper and blueprints in to a suitcase, desperately trying to collect what he can and leave.

"stupid! clumsy! how could i let those fools see me, even for a moment?!"

suddenly, Gaster hears several vehicles pull up outside the warehouse he had been hiding in for several days now.

"NO! how is that possible?! how did they track me here so quickly? damn! things are proceeding faster then i expected. i can't let them ruin everything, not when i'm so close."
Gaster looks towards an unknown figure wrapped in chains with a bag over their head and smiles as a sinister idea enters his mind.
"hmm... perhaps my newest experiment could buy me the time i need."

just then the door to the room is kicked in and frisk along with their friends: Asgore, Toriel, sans, Mettaton and Undyne all enter the room and surround Gaster.
"ah! young frisk. sorry about the mess, i wasn't expecting you here so soon."

"it's over Gaster! we know you're the one stealing human and monster souls, and we know you have Asriel. NOW WHERE IS HE?!"
Gaster just laughs as the group grows angrier with him.

"you should have expected this frisk. Asriel was such an easy target. all i had to do was have one of my amalgamates draw him outside away from sans and papyrus, and the rest was... well... too easy, if i'm honest."

sans grows impatient and flips the table next to him sending paper all over the large poorly lit room.
"you know doc i used to act pretty half assed about most things. but after you took the kid, i upgraded!"

sans states as his left eye glows bright blue. but Gaster continues uninterested with sans' threats
"Upgraded? to what? three quarters ass? threaten me all you want, sans, it won't do any of you much good. besides, this old dog recently got some new teeth!"

Gaster then pulls out a remote control from his jacket pocket. the entire group immediately stands frozen in place, too scared to move thinking the remote is a bomb of some kind.

"what are you gonna do? blow us to bits, doc?"

"actually, Undyne, i thought i'd let my new friend beat you to death."

Gaster presses the remote activating a bright light on the other side of the room. everyone turns to see the mysterious figure with the bag on their head. Gaster teleports over to the mysterious figure, removing the bag over their head revealing their identity.

"ASRIEL?!" frisk shouts as everyone looks on in shock. there before them sits Asriel in his adult form, wearing a black robe with white sleeves and his name written in wing dings across his chest. Asgore steps forward in front of everyone trident in hand pointing it towards Gaster.

"IF YOU EVEN THINK OF HARMING HIM MY SON, I WILL RIP THE FLESH FROM YOUR BONES!"

"first of all, your highness: i'm already a skeleton, second: the only quote on quote, harm I've done to Asriel, is make him a little more... obedient to me, third: you won't hurt me because you're still the weak pathetic pushover of a king you were back in the underground. i can see you hand shaking. face it. if you had the guts to kill someone, you would have done it years ago. oh wait! you did."

Asgore, angered by this, throws his trident at Gaster, who teleports away just as the trident hits the wall where he was standing. Asgore and sans both curse in frustration over losing Gaster, leaving Toriel to calm Asgore down, while frisk dose the same with sans.

"DAMN IT! we had him right there and he still slipped away?!"

"it's all right sans. we'll get him next time. for now lets get Asriel, home."
sans starts to calm down as his eye changes back to normal.

"alright... lets get Asie, outta here."
sans reaches to try and take the chains off of Asriel, but the moment he touches them Asriel opens his eyes a dark purple light emitting from them, startling sans, for a moment. everyone looks to Asriel, but before anyone can say a single word Asriel, stands up and breaks the chains wrapped around his body.

"hey... k-kid. you alright? you look kinda mad."

"💧︎ ︎■︎⬧︎✏︎"

Asriel, grows in an unknown language as he looks down at the skeleton. Asriel, snarls angrily before picking sans up by his head. without saying a word, Asriel violently slams sans into the ground, knocking him out.

"SANS! ASRIEL, WHAT ARE YOU DOING?!"

Asriel just looks directly at frisk and growls like a feral animal

" ︎❒︎ ︎⬧︎🙵✏︎ ︎ ︎ ︎✏︎"

"something's wrong with him! everyone! STAY BACK!"

Asriel roars before charging straight at frisk. Mettaton sees the attack coming and shoves frisk out of the way.

"DARLING LOOK OUT!"

Asriel doesn't change direction though, instead grabbing Mettaton and charging straight through numerous walls eventually reaching a large open courtyard.

"Asgore, stay with sans. everyone else, with me. lets move!"

frisk and the others follow Asriel's warpath into the large courtyard area. Mettaton by this time wrestles free of Asriel's grip. the two stand several feet apart staring at each other. Asriel stares with a look only a wild animal would have, while Mettaton stares on with pure fear running through him.

"IF SANS COULDN'T STOP THIS RUFFIAN, WHAT CHANCE DO I HAVE?! Mettaton thinks to himself. "darling, Asriel, please! listen to me! just calm down. i don't want to hurt you! I- "

before Mettaton can finish his plea, Asriel, dashes over, grabs both of Mettaton's arms and tears them from their sockets showering sparks everywhere.

" ︎□︎📫︎⧫︎ ︎●︎🙵✏︎"

frisk and company finally make it outside to see Mettaton on the ground riving in pain, with Asriel, summoning and charging up his chaos buster cannon ready to finish off Mettaton. wasting no time, frisk, sprints towards the two.

"no frisk, come back!"

frisk ignores Toriel's protest, instead tackling Asriel, to the ground and causing him to drop his chaos buster, which loses its charge and disappears. Asriel, stares at frisk, angrily showing his teeth and growling like a feral wolf while frisk, stares back determined and unflinching.

"leave them alone Asriel! its me you want! fight me!"

Asriel throws his head back, giving deafening roar and causing rainbow coloured bolts of lightning to rain down all around the courtyard.

" ︎❒︎ ︎⬧︎🙵✏︎"

suddenly growing even more enraged upon seeing Frisk, Asriel, charges straight towards them, the dark purple energy emitting from his eyes growing stronger and brighter. luckily Frisk's quick reflexes let them dodge the attack, and throw a fist full of dirt into Asriel's eyes, temporarily blinding him and causing him to stumble and fall. while Asriel tries to wipe the dirt out of his eyes, Frisk runs over to Mettaton to check on him.

"Mettaton! are you alright?!"

"d-don't worry about me darling. with legs like these who needs arms anyway?"

"don't talk, save your energy." Frisk helps Mettaton get to his feet.

"get clear Mettaton! you're no good without your arms."

Mettaton nods and rushes to the side. Frisk looks back at Asriel, who by now, manages to get to his feet, but is still trying to wipe the dirt out of his eyes. Frisk, rushes at Asriel landing several punches and kicks, and easily dodging Asriel's blind jabs. but even without his sight, Asriel, is no pushover as he finally grabs Frisk by the throat.

"heh... guess you're still pretty fast, huh?"

" ︎□︎⧫︎📫︎ ︎ ︎⬧︎⧫︎📬︎ 💧︎⧫︎❒︎□︎■︎ ︎📬︎"

finally wiping the last of the dirt away and fully restoring his sight, Asriel, glares at Frisk, growling in frustration before punching Frisk square in the chest so hard they send Frisk hurtling across the courtyard, before smashing, back first into a large metal shutter, leaving a massive dent in it. Toriel, gives a loud gasp of horror and rushes over to help the winded Frisk. now the only capable combatant left, Undyne summons her spear in her hand and looks Asriel dead in the eyes.

"Guess its just you and me now, big guy. lets go punk! COME ON!"

"🕆︎■︎ ︎⍓︎■︎ ︎✏︎"

Undyne charges at Asriel full speed, stabbing her spear in to his stomach. but Asriel, barely phased by the near impalement, punches Undyne, aside. Asriel's wound quickly heals leaving little trace of the injury, except a few drops of blood on the ground. Undyne, gets to her feet in just a few moments, but in the blink of an eye, Asriel, dashes forward and bites down on Undyne's left forearm. Undyne, gives a brief yell in pain but thinking fast, knees Asriel, in the chest and stabs him in the side with her spear. loosening his grip just enough to escape.

"ARGH! DAMN IT! so... we're fighting dirty now, huh? guess all that brain washing junk didn't just make you talk all weird. it also made you into a beast, didn't it? fine by me, kid. I've been itching for a REAL challenge. you thought my training was bad? you haven't see what this royal guard can REALLY do!"

meanwhile, Toriel, kneels next to Frisk. using her magic to try and heal the large bruise on their back.

"it's okay my child, i'm here, stay with me."

Frisk starts to come to and opens their eyes before sitting up and seeing Toriel, smiling.

"thank heavens. you had me very worried, Frisk."

"thanks Torie. i'm fine! but right now we got bigger things to worry about, how do we stop Asriel?"

"I'm not sure! I've never seen Asriel, or any monster act like this before! at this rate he won't give up until all of us are dead!"

"He's not unstoppable, Toriel! there has to be a way." Frisk thinks for a moment before coming up with a plan. "WAIT! I've got it! Gaster's lab must have some sedatives or muscle relaxants we can use. Torie, go get as much as you can find!"

"NO! my child, i can't leave you! its too dangerous!"

"toriel, listen to me! i can do this, i'll hold off asriel, as long as i can, but you have to find something to calm him down! NOW GO! "
reluctantly toriel, rushes back into Gaster's lab. frisk, gets to their feet, only to see Undyne and Asriel, battling one-another. the duo stand respectfully on either side of the court yard with Undyne, throwing spears at Asriel while he just stands there, chaos sabers in hand.

"you feel that?! huh? DO YA PUNK?! you wanna kill me, you're gonna have to try a lot harder kid!" Undyne, smiles confidently despite the large bite in her arm causing her great pain. regardless, she continues to summon and throw spear after spear, while Asriel, either dodges or blocks the spears with his swords, that is until Asriel, catches one of the spears in mid air, wiping the smile off Undyne's face and causing her to briefly stop throwing spears.

"no friggin way!. no one's ever caught one of my spears before. what the hell kind of crazy magic steroids is this kid on?!"

Asriel, grabs the spear with both of his hands, corrupting it with a dark purple aura, before throwing it back at Andyne, at nearly twice the speed Undyne, originally through it. the spear just barely misses Undyne's head but slices over her shoulder, leaving a massive cut and causing immediate pain and blood-loss. the spear heads straight towards frisk, who luckily at the last second moves to the side as the it plants itself into the wall mere inches from frisk's head. paralized by pain undyne falls to her knees, profusely bleeding from her shoulder. frisk tries rush over and help their injured friend but asriel while walking over to undyne backhands frisk, knocking them aside. standing over the defeated Undyne, Asriel, growls-

"- ︎ ︎⬧︎⧫︎📫︎⬥︎□︎❒︎ ︎⬧︎✍︎"

undyne despite her pain, defiantly spits in asrile's face.

" S-still don't know what you're saying, kid. but if it's my time to clock out... go ahead... DO YOU'RE WORSE, PUNK!"

Asriel wipes the spit off his face, snarls and grabs Undyne's head. slowly, he starts to press his thumb into undyne's good eye, causing her to scream loaudly out in pain. her cries echo across the whole area, blood, starting to drip down her face, undyne, desperlys punches asriel's arms but he continues his torturous act. frisk, meanwhile, stands up but is immediately struck with fear.

"asriel... what has GASTER done to you. this isn't you. this isn't the Asriel, i know." Undyne, though her pain, desperately cries out for help.

"KID! PLEASE! HELP ME! EVEN IF YOU HAVE TO KILL HIM, JUST DO SOMETHING, ANYTHING! OH GOD IT HURTS!"

but frisk doesn't help her. instead frisk's fear completely paralyzed them in place. frisk just stands too terrified and mortified to help their friend.

"what the heck am i doing? i could have acted ten times by now. instead i'm standing here like a coward. i really am an idiot."

thankfully before Asriel, can do any permanent damage to Undyne's eye, he is stopped by the feeling of a hand on his shoulder. Asriel, lets go of Undyne's head who collapses to the ground unconscious from the pain. Asriel, then turns round to see his father, Asgore, standing there.

" ︎📫︎ ︎ ︎⧫︎ ︎ ︎❒︎✍︎"

"Asriel. my son. I am so disappointed in you."

Asgore, then headbutts Asriel, causing him to stumble and trip on Undyne's body. Asgore, stops Asriel, from falling by grabbing his arm and throwing him across the courtyard. before Asriel, can get to his feet he is kick in the face by Asgore, who crouches next to him and starts to pummel Asriel's face all while shouting at him.

"YOU! ARE NOT! MY SON! frisk snaps out of their fear and see Asgore, violently beating Asriel, into the ground.

"ASGORE! THAT'S ENOUGH! STOP!"

"Frisk?!"

Asriel, takes advantage of Asgore, moment of distraction and punches Asgore, away while getting to his feet. Asgore, rubs his bruised eye while Asriel, walks towards him. Asgore summons his trident and stands firm, ready for round two.

"Asriel! i don't want to hurt you. but i can't let you hurt anyone else!"

Asriel, roars and summons his chaos buster aiming it at Asgore. luckly before Asriel, can pull the trigger however frisk throws a brick at Asriel's back grabbing his attention.

"HEY! ASRIEL! we're not done with each other yet!"

Asriel, gives another roar and turn round firing a lazer at frisk, who swiftly dodges it. frisk charges at Asriel, dodging several lazers along the way. Asriel, tries to hit frisk, with a powerful uppercut. but in a fraction of a second, frisk, slides between Asriel's legs and jumps on his back causing Asriel, to drop his chaos buster and stagger around trying to get frisk off his back. Toriel, finally emerges from the hole in the wall created earlier, syringe in hand, only to see the insane war zone Asriel, has created. frisk sees Toriel, standing there and while holding onto Asriel's back yells to her

"Torie! it's now or never, give me the syringe!"

wasting no time, Toriel throws the syringe at Frisk, who catches it perfectly.

"sorry, Asriel. this might sting a bit."

Frisk, injects the needle into the back of Asriel's neck causing him to throw his head back and roar out in pain. Asriel, grabs frisk, and throws them off his back towards Asgore, knocking the wind out of both of them. Asriel, charges towards the pair but Toriel, dashes in Asriel's way. holding her hand out, she definantly stands in Asriel's way.

"Asriel! listen to me! STOP!"

to everyone's surprise Asriel, obeys. stopping dead in his tracks right in front of Toriel. Toriel creates a large ring of fire around the two keeping the others at a distance.

"Asriel. are you there? it's me! your mother, Toriel. i promise, we're here to help you."

while Toriel, tries to calm Asriel, the others slowly pick them self up and gather around Toriel's fire ring. Mettaton, dispite missing both arms still uses their emergency backup power to keep running and view whats happening."is Toriel mad? even with those sedatives Asriel, is still a mindless brute! then again she certainly is a lot braver then myself."

Undyne, despite her vision being blurry and mostly red from her blood, still barely makes out the sight of Toriel standing in the middle of the burning circle. "uh... what happened? did i kick ass? wait! is that? okay... either prince Asriel, screwed up my eye more than i thought or lady Toriel, is trying to talk down a guy who took a bite out of my arm and tried to tear rest of us in half like a phone book. wait till Alphys, hears about this!"

sans stumbles out into the courtyard and sees the havoc Asriel, recently cause. even with his splitting head injury he still manages, to crack a smile and a joke.
"looks like i missed one hell of a party! guess those guys got some guts to fight a fella who cause this kind of wreck. though to be fair, i am a skeleton. not like i had guts to start with."

finally Frisk and Asgore, slowly get to their feet and see Toriel, standing in the middle of the raging inferno. Frisk's eyes go wide and they immediately fear for Toriel's safety.
"No! what the heck is she doing?! HE'LL KILL HER!" frisk tries to run over to the pair, but Asgore, grabs frisk's arm stopping them.

"frisk, wait! it's alright, she's trying to calm Asriel, down so we don't burn through the sedatives too quickly! even if she fails that ring will keep him in place, even he can't get through those flames."

Asriel's breathing slows down and he begins to slowly calm down. his eyes change back to normal and he looks his mother in the eyes, a look of regret and sorrow on his face.

"it's okay my child, i'm here. WE'RE here. everything's going to be alright. but please, Asriel, i need you to calm down, okay? i don't know what Gaster did to you, but... i promise we'll find a way to fix you. my sweet Asriel, i promise. all you're anger will pass soon. this is all just a bad dream."

"💣︎📫︎❍︎□︎⧫︎ ︎ ︎❒︎📬︎📬︎📬︎ forgive me..."

Asriel, collapses to the ground unconscious and exhausted. his body changes back to his normal child form and his black robes change into a teal sleeveless medical gown. the ring of fire finally dies down and extinguish itself, revealing Toriel, standing tall holding Asriel's unconscious body. without saying a word she just walks pass everyone back to the vehicles everyone arrived in, all while holding back as many tears as she can.
frisk just gives a loud sigh of relief summing up everyone's feeling.
"we did it guys. it's over. Undyne! call Alphys and Papyrus, tell them we got a little ruffed up and might need some R & R, and tell them... tell them we're bringing my brother home."