Disclaimer: I own nothing in this story. My Little Pony belongs to Hasbro and Thor, Loki, Odin, Laufey, and Frigga belong to Marvel. I also don't own Thor and Loki's pony designs, they belong to lizzytheviking from Deviantart. I also don't own Teslan Aegis, he belongs to JonathanMDful (even though Teslan Aegis is Flash Sentry before he was given a name and a pony design).

Back at Ponyville, the ponies were still trying to recover from the attack. The Main Six and Spike looked onward at what happened.

“I can see now what you went through that day, Twilight.” Rainbow sighed. “We’re sorry.”

“It was my fault…I should’ve stayed behind and saved Dinky. I should’ve let that Loki creep kill me instead.” Twilight said, holding back a sob.

“But if you did that, there wouldn’t be any Elements of Harmony, you couldn’t become friends with us, Shining Armor wouldn’t have a sister, and I would be dumped in an orphanage or cave.” Spike explained. “That’s what I’m worried about.” Fluttershy said with a concerned expression. “Thor was deeply affected when Princess Celestia was talking about the foal she found and gave to Odin to raise. Poor thing…”

“I know, right? Wherever that foal is now, he or she must be looking for revenge on somepony after finding out about what REALLY happened during the aftermath of the Ice Pony War.” Twilight said. “Do ya think there’s a connection between Loki and this foal?” Applejack questioned.

“We can only hope that Thor can figure that out on his own.” Pinkie sighed sadly. “I pity that foal, I cannot believe that he or she could be the last of his or her race…” Thor mumbled to himself as he entered the library.

“I am sure Twilight has a book about the war or Ponyheim’s history in general that explains the gender of this foal.” Thor said to himself, levitating through drawers and looking for a quill to write with. “Perhaps…” He then saw something, a purple book that could’ve been Twilight’s notebook she used while studying and taking notes on magic buried underneath all the quills and ink bottles.

Out of curiosity, the alicorn levitated the ink bottles and quills out of the way and levitated the book out. He hesitated, knowing it would be an invasion of privacy even though it wasn’t a diary. “Oh, to Tartarus with this…I am sure Twilight will not mind that I am looking at her notes from her studies.” Thor grumbled as he levitated the notebook and opened it. But then, he noticed a page of notes in the book and gasped. It read…

‘Ice Ponies were a monstrous race of ponies from the horrible realm Glacies ruled by Laufey. They were the sworn enemies of Ponyheim who’ve stolen the source of their power with Equestria’s help. The Ice Ponies were told in legends in the old days by parents to their foals at night. Side notes: I think that Loki or whatever his name was creep who killed Dinky is probably the last of this race since the Ice Ponies are now extinct. Ugh! Why didn’t I even have the chance to save her?! She couldn’t have risked her life like that!’

Thor looked stunned and sad at what he was reading. He couldn’t believe it…his adoptive brother is last Ice Pony and he killed Twilight’s foalhood friend. Could this all be true? Or was Twilight angry when she wrote the side notes? Going around the library, he skipped a few more notes and found something else.

‘In 970 ANMS, Odin, ruler of Ponyheim, waged war alongside Princess Celestia, ruler of Equestria, against the Ice Ponies and their leader, Laufey to prevent them from conquering Ponyheim and Equestria. The Ponyheim and Equestria armies defeated the Ice Ponies and had them executed and seized the source of their power, the Casket of Ancient Winters which is currently stored in Odin’s trophy room. According to legend, it’s said that Celestia found a foal that she gave to Odin which is said to be the Last Ice Pony and Laufey’s son. The Casket is said to only be handled by an Ice Pony; anypony else who attempts to use it would be burned by the cold that surrounds it. Side notes: I think it’s possible that the Casket kills ponies and immobilizes dragons, but how did Odin lose that one eye of his? Could it be one of the Ice Ponies’ weapons that they summon ice that can cut through anything since it sounds sharper than normal ice?’

Thor looked stunned and in disbelief. Loki was also Laufey’s son and Odin never told him about this? “Why?!” Thor growled as he levitated his hammer and knocked a bookshelf down.

“I thought my brother loved me! WHY DID FATHER NOT TELL ME ABOUT HIS TRUE PARENTAGE?!” Thor yelled, knocking down more bookcases and messing up the main room in panic. Once he was done, the alicorn collapsed as he shielded his face in his forelegs and sobbed uncontrollably.

Celestia and Luna looked at the stained glass windows with grim expressions about what happened while they were in the throne room.

“It appears we were too late.” Luna said with a sad sigh. “Loki’s forces had struck all over, except for some of the cities away from Ponyville, Cloudsdale, and Canterlot and the Crystal Empire.”

“And things are getting worse. Everypony found out that he’s Thor’s adoptive brother and believe that the legend about the Last Ice Pony being Laufey’s son is true.” Celestia added nervously.

“Indeed, I’m glad that Shining Armor left his wife to defend the Crystal Ponies while this war’s happening. We can’t take any more chances.” Luna nodded.

Back in Ponyville, the Mayor was in front of the ponies once more with the Main Six and Spike.

She announced, “Listen carefully! What happened before distracted us. So, I’m doubling the security in this town. School will end earlier than normal. Foals aren’t allowed out after dark, only emergency personal. Seek shelter in case of emergency.”

“But what about our nightly activities?” Lyra asked with a concerned expression.

“They’ll be canceled until further notice.”

Twilight sighed as Applejack spoke, “Ya need to show Thor those notes about the Ice Ponies and the war so he knows about his brother’s true parentage. I have a bad feelin’ that he already found out now.”

“You’re right. I need to tell Thor that Loki’s the Last Ice Pony and Laufey’s son while showing off the notes.” Twilight mumbled until Thor showed up just in time. “Oh, Thor! Good timing, I was going to tell you something.”

“Do not tell me anything…” Thor grumbled angrily to Twilight, much to her concern.

“Excuse me?”

“No excuses! But then, do not bother! My brother never loved me!”

“Thor, what are you talking about?” Rarity asked with concern. The other ponies looked on in confusion.

“This!” Thor snapped furiously as he levitated Twilight’s notebook to a set of notes. “‘I think that Loki or whatever his name was creep who killed Dinky is probably the last of this race since the Ice Ponies are now extinct.’ Try explaining that, Miss Sparkle and that Ice Ponies are monsters that parents tell their foals about at night and that Father never told me about Loki’s true parentage!” Twilight gasped in alarm…Applejack was right, he did find out about it.

Twilight gritted her teeth and then spoke up, “Thor, I was upset about Dinky when I took those notes! I shouldn’t have said those awful things! I regret doing so to this day.”

“That still does not explain this notebook!” Thor growled to Twilight furiously. “Now calm down, sugar cube. There’s no need to lash out and act all stubborn.” Applejack said to Thor in concern.

“Oh, you are one to talk about being stubborn, Miss Applebuck Until I Pass Out!” Thor snapped. “Or I shall call you ‘Second Place Coward’ since I heard that you sure as Tartarus ran away after not winning the prize money for that rodeo in Canterlot.”

“Hey, ya can’t talk to my sister that way!” Apple Bloom yelled angrily. “Oh, this is coming from somepony who does not have a cutie mark yet. Well, I have news for you, Blank Flank, FIND ONE THAT IS YOUR OWN TALENT!!!” Thor shouted at Apple Bloom furiously. Apple Bloom gasped in shock as tears welled up in her eyes.

“Hey! Come on, you can’t talk to her like that!” Rainbow yelled, defending Apple Bloom. “Look who just stood up, Miss Wonderbolts Academy Dropout! I heard you once had an ego as big as Trixie’s until you were outshined by Mare Do Well! Care for some advice? READ A REAL BOOK, EGGHEAD!” Thor scowled at Rainbow.

“Nopony yells at Rainbow Dash like that!” Scootaloo snapped. “Oh, goodness, the chicken who cannot fly; Oh wait, I guess you can, just not very well!” Thor yelled to Scootaloo which made her gasp.

“Now, Thor, I know you’re upset, but you can’t take your anger out on all of us.” Rarity said to Thor. “Since when the hay did you care?! And get a manecut, marshmallow! Your manestyle is so two seasons ago!” Thor scowled.

“EXCUSE ME?!” Rarity shouted, offended about what Thor said about her mane. “Thor, that was SO uncalled for!” Sweetie Belle yelled angrily. “You take back what you said about my friends right now!”

“I am ignoring you because I do not have anything rotten to say.” Thor grumbled before turning to Fluttershy. “You…I do not know what to say about you, but you are a coward!” This got Fluttershy upset as her eyes welled up with tears. “Thor, why are you so mean?” She whimpered.

“How about we all calm down and have a party?” Pinkie asked as she tried to cheer Thor up. “Ugh…Miss Pink Party Pony…you never learn to leave others alone, huh? Another question, am I getting through to whatever alternate reality you are living in now?” Thor snapped. Hearing this got Pinkie shocked. Thor then walked up to Twilight who looked at him with concern.

The alicorn snapped, “You are worst of them all! All you care about is your friends and…that fire breathing monstrosity that you call your assistant!”

“Don’t you DARE talk about my assistant that way!” Twilight shouted angrily. “That horrible creature does not deserve to be your assistant!” Thor retorted, making tears come out of Spike’s eyes.

“Thor, please calm down!” Twilight protested in sadness. “Oh, I understand alright…” Thor grumbled in a dry voice. Thor, sad and angry, glanced at the crowd of ponies surrounding him. “That my brother never loved me! He is just some monster that parents tell their foals about at night!” Thor pointed out angrily. Twilight and her friends flinched.

Spike called out, “Thor…” Thor yelled as he levitated his hammer to the skies and lightning shot out of it, making ponies gasp in shock as the sky turned gray. After that, the alicorn headed off, snapping, “I have had it with you mortal ponies! You can all rot in Tartarus for all I care!”

“Thor, don’t go!” Spike protested in despair as he tried to stop the alicorn, but with another yell, Thor hit the baby dragon with his hammer, making him scream as he fell to the floor with a bruise before resuming his leave. Spike started crying, not only in pain from the hit, but also from Thor hurting everypony’s feelings, especially his.

“Oh, man…” Twilight gasped in shock. “Spike, are you alright?”

“I’m fine, Twilight. I’m fine…” Spike replied in sadness.

“Spike, I need you to talk some sense into Thor…without having him attack you, ok?” Twilight asked. Spike nodded and ran to follow Thor, keeping a safe distance from him. Twilight sighed sadly as she buried her face in her forelegs, “I must be the worst weakest unicorn in all of Equestria…”

“Thor just needs some time to calm down.” Rarity reassured her.

“But how? It’s not safe for him or Spike in Ponyville especially since Loki could attack again to kill them.” Rainbow asked. Shining Armor sighed to himself and turned to a guard.

“You there! Go to the princess immediately and tell her to send a message to Ponyheim’s ruler, Odin ASAP!” He commanded. As he was giving out this order, Apple Bloom, Scootaloo, and Sweetie Belle were all crying from Thor’s rude remarks. “Yes, captain!” The guard nodded, flying off to Canterlot Castle.

Twilight sniffed then spotted the notebook on the ground. Thor must have dropped it as he left. The unicorn levitated it and flipped to a page.

“If only Thor read the side notes of the notes I was taking on ‘Ponyheim heroes and royalty’…” She sighed as she read the side notes to herself. “’I think it’s super cool that this Thor pony can control thunder and lightning. He would make one awesome ruler of Ponyheim. If I ever met him, I bet we’ll be like friends and I would tell him how cool he’ll be once he rules his kingdom…’”

“Everypony, I’m sorry for what happened, but I assure you, things will turn out fine in the end.” The Mayor apologized to the citizens.

In Ponyheim, an alicorn mare with brown eyes, a blonde mane, a sea green coat, and a light blue heart as a cutie mark wearing a light grey dress began flying towards the castle and through a window that led into a room where a bunch of guards in silver armor with gold helmets were meeting. She arrived where the guards were waiting, standing near a spot at the head of the table.

“There you are, my queen.” The captain of the Ponyheim guards, Teslan Aegis: a Pegasus stallion with blue eyes, a light blue mane with dark blue streaks, a light yellow coat, and a dark shield with a lightning bolt in the middle as a cutie mark wearing the same armor as the Royal Guards, but with a larger gold helmet, snapped. “When will your husband also known as our king arrive?”

“And I keep reminding you time and again, Captain Teslan; Odin will come when he will come!” The alicorn mare, whose name was Frigga, snapped back in annoyance with a British accent.

“But when? I want to help Equestria with some reports of attacks in Canterlot, Cloudsdale, and Ponyville.” Teslan Aegis demanded. “You shall get it soon, Captain Teslan. It is good to see you all.” A familiar voice spoke up in a British accent as the guards and Frigga turned to see the door open. An alicorn stallion with blue eyes (one was covered with a golden eye patch), a white mane and beard, a white coat, and grey hooves with a light blue cube as a cutie mark wearing gold armor with a yellow cape attached entered the room and went to his spot next to Frigga who nuzzled him. This was Odin, now fully grown and standing as tall as Celestia.

“And as are we.” The guards nodded, bowing before him. “The attacks have been slowing down Equestria recently.” Frigga explained. “I am surprised that the princesses didn’t send those six ponies to stop them.”

“We must find a way to help Equestria. I was friends with the princesses when I was a colt.” Odin mumbled.

Suddenly, without warning, a familiar puff of smoke appeared as the guards saw a small scroll appear. Odin levitated the scroll and opened it. The alicorn looked at the message, his good eye widening in shock. “So…the day has finally come.” He said nervously. “And which day is that?” Another guard asked as Odin read the message.

‘Dear Odin,

Our worst fear has been realized. Your adoptive son, Loki has struck Equestria and nearly tried to kill my student and her friends. We are trying our best to force him and his army out of Equestria, but we need your help like we needed it in the past.

The real reason is this: Your real son, Thor found out that Loki is Laufey’s son and the Last Ice Pony…and he lost his temper and the rest is too much to explain. With that said, I am sending him to Ponyheim for safety until this matter is settled as I fear that Loki may try to kill him for revenge at some point.

Thor will be waiting for you at the borderline between Equestria and Ponyheim with my student’s assistant, Spike. Expect him and your son soon.

Your old friend,

Princess Celestia of Equestria’

The alicorn nodded as he levitated the scroll into a shelf nearby. “It appears that our sons are in Equestria; one is trying to help it while the other is trying to hurt it.” Odin announced grimly. Frigga glanced at the letter nervously and asked, “Loki wants to kill Thor? Goodness, our son is in danger! And our adoptive son is behind all of the attacks in Equestria recently?!”

“Correct, dear; I need you to come with me to greet our son. Guards, I want half of you to patrol the area and make sure that Loki’s soldiers do not enter this kingdom. The rest of you must protect the castle.”

“Yes, sir!” The guards nodded, teleporting or flying off to different locations. The meeting ended as Odin and Frigga flew off to the border to meet Thor and Spike.

“Darling, when will you explain the truth to our son?” The female alicorn asked with concern. Odin paused and then replied, “The truth to Thor…may have already come to him.”

Thor frowned as he stopped and waited patiently for Spike to come. It had been arranged for him to be escorted to the borderline where his father, Odin, will be at to take Thor in for a while.

“Be sure to keep an eye on him, Spike.” Twilight reminded Spike as she hugged her assistant. “And be on the lookout for danger. I don’t want you to get hurt.”

“It’s gonna be ok, Twilight. Everything will be fine and I’ll be back as soon as possible.” Spike reassured her, hugging back and turning to Thor.

“Thor, you don’t have to go, you know. We can work this out, trust…” Before he could say another word, Thor growled at him. The baby dragon looked away in sadness. “Sorry.” He apologized quietly.

“Oh shut it, Spike…” Thor retorted angrily. “Hey, you don’t need to be a jerk about it!” Spike yelled.

“At least, I am not a fire breathing monstrosity like you!” Thor snapped. “With an attitude like that, you may as well act like your adoptive brother!” Spike scolded in protest.

Apple Bloom’s teary eyes narrowed as she glared at Thor while yelling, “Go on; walk away! If ya treat me, my family, and my friends like this, ya don’t belong here anymore! I HATE YA, YA BIG BULLY!” Then, the red maned filly ran off in the opposite direction, crying.

“Apple Bloom!” Applejack yelled in concerned, running after her sister. “Come on, Thor. Time to go.” Spike sighed sadly as he walked alongside Thor who didn’t look back. The ponies who chose to say their goodbyes waved to the alicorn.

“I hope he never returns to Ponyville. I mean, did you hear—“Rainbow began, but was cut off by Fluttershy.

“Rainbow, come on!” Fluttershy sniffled. “I’m hurt by his mean words too…but Thor was just upset. Oh, I hope he’ll be ok.”

Twilight looked down in sadness, knowing that Thor didn’t even bother to say goodbye or look back. It looked like she just lost a friend.

As the army continued their preparations, Loki stood on top of one of the pedestals that once had the Elements of Harmony on them. He grumbled, “I should’ve killed Thor when I had the chance…when ‘Father’ promised that both of us were born to be kings…”

Flashback:

Odin was telling a young Thor and Loki the story of how Ponyheim and Equestria won the Ice Pony war and took the source of their power. “…But the day will come, when one of you will have to defend that peace.” He concluded.

“What if all the Ice Ponies weren’t executed?” Loki asked in curiosity. “When I’m king, I’ll hunt the monsters down and slay them all! Just like you did, father!” Thor grinned in excitement.

Loki’s voice commented, “Even as a colt, Thor was arrogant and reckless. I always hated that about him. In fact, I hate everything about him.”

“A wise king never seeks out war, but he must always be ready for it.” Odin advised as he walked off. Thor turned to Loki and grinned, unaware of his adoptive brother’s smirk. The two colts ran after their father quickly and stood on either side of him.

“I’m ready, father!” Thor exclaimed. “So am I!” Loki added.

“Only one of you can ascend to the throne, but both of you are born to be kings.” Odin told them.

Then, the flashback skipped to years later and showed Loki, now an adult, in front of the Casket of Ancient Winters. Loki shook his head as he levitated the Casket and a voice yelled out, “Stop!” It was Odin, watching everything from a distance.

“Am I cursed?” Loki asked nervously. “No.” Odin replied with a stern expression. “What am I?” Loki demanded, levitating the Casket down.

“You’re my son.” Odin said. Loki turned around to face him, but his coat was dark blue and his eyes were blood red. “What more than that?” He growled as his coat and eyes returned to their normal color and he began walking towards Odin. “The Casket wasn’t the ONLY thing you took from Glacies that day, was it?”

Loki’s voice narrated, “Of course, I would make a better king than Thor, but no, father loved him more than me. Neither Ponyheim or Equestria deserves to have him as a ruler!”

Odin stared in concern as his adoptive son stared at him with an irritated expression.

“No.” Odin responded. “In the aftermath of the war, Princess Celestia, the ruler of Equestria, our neighboring kingdom, went into the temple and found a foal which she gave to me. Small for an Ice Pony’s offspring. Abandoned, suffering, left to die; Laufey’s son.”

“Laufey’s son?” Loki repeated in shock. “Yes.” Odin nodded.

“Why? You were leg deep in Ice Pony blood. Why would Princess Celestia have you take me?” Loki asked. “You were an innocent foal.” Odin replied. “No, Princess Celestia had you take me for a purpose, what was it?” Loki asked. “TELL ME!”

“I thought we could unite Ponyheim and Glacies before the Ice Ponies were executed. Bring about an alliance, bring about permanent peace…through you.” Odin explained. “What?” Loki questioned quietly, his eyes welling up with tears.

“But those plans no longer matter.” Odin added. “So, I am no other than another stolen relic? Locked up here until you might have use of me?” Loki asked while he began to cry.

“Why do you twist my words?” Odin demanded. “You could’ve told me what I was from the beginning! Why didn’t you?!” Loki sobbed. “You’re my son, I only wanted to protect you from the truth.” Odin responded.

“What? Because I-I-I am the monster that parents tell their foals about at night?” Loki asked sadly. “No, no…” Odin muttered to himself. “YOU KNOW IT ALL MAKES SENSE NOW! WHY YOU FAVOR THOR ALL THESE YEARS BECAUSE NO MATTER HOW MUCH YOU CLAIM TO LOVE ME! YOU CAN NEVER HAVE AN ICE PONY SITTING ON THE THRONE OF PONYHEIM!” Loki shouted with an angered expression. Odin sighed and left, much to Loki’s anger and disappointment.

“I will have my revenge on Thor…I swear my life on it. I shall never remain a shadow, living in the shade of Thor’s greatness.” Loki grumbled.

End of Flashback

Loki snarled, “At last, I know the truth…that vengeance on Thor and anypony who stands in my way is the only answer.”

“Loki, are you talking to yourself?” A voice asked. The Alicorn turned around to see Trixie standing there while levitating something behind her.

“There are not many ponies who can sneak up on me.” Loki smirked evilly. “If you want to kill Thor so much, then check out this picture I found of the two of you as colts. It’ll remind you of growing up with him.” Trixie said, levitating a photo of the two colts smiling much to Loki’s anger and shock.

Loki’s expression remained emotionless as he levitated the picture towards him and onto the ground, slamming his hoof onto the ground which damaged the photo.

“You’re welcome!” Trixie nodded nervously as she stared at the photo and left. “Someday, he will be forgotten forever and the throne will be mine…” Loki grumbled.