Follow the Creed, Blade of Light, Run with the Wind.

After the events with the window and creature. It was currently lying on a bed with the Doctor investigating if any damage had actually come to the creature from the impact. He was surprised to find that the creature hadn’t been damaged at all by the impact, but was only knocked out.

As the doctor finished testing its heartbeat, he heard the doors swing open as the Mane six and Princesses walked in.

“How is he Doctor?” Twilight asked.

“Well, he appears to be fine. He’s just unconscious for the moment.” He replied.

“Thank you Doctor Stable. Now can you leave us alone with this creature for a minute?” Celestia asked.

“Of course, Princess.” Doctor Stable said before leaving the creature and the ponies alone.

“Now, when the creature wakes. We must greet it properly and question if it knows anything about those signs and creatures we saw.” Celestia said, the entire group nodded. Except for Rainbow Dash.

“Alright. I know we saw this guy fighting all those monsters, but how can we trust him so quickly?” she said. Her wings flung out as she stared to hover over the creature.

“I mean, he could be a spy!” she said as she pressed her muzzle against the creature’s nose. She continued to glare at him until its eyes slowly fluttered open. The two both jumped back in shock, causing the creature to bang his head and Rainbow Dash to fall onto her rump.

“Ow. Man that hurt.” The creature said rubbing its head. He then noticed the other ponies and freaked out again.

“What the- Ow! Again?” the creature said, who had hit its head again.

“Please stay calm. We mean you no harm.” Celestia said.

“Wha-What or who are you?” the creature asked, slowly sitting up.

“I am Princess Celestia. Princess of the day.”

“I am Princess Luna, Princess of the night.”

“Okay, but what are you? Ponies?” the creature asked.

“Yep! Hi! I’m Pinkie Pie!” she said as she somehow levitated in front of the creature holding her hoof out for a shake. The creature slowly raised its hand and shook the hoof of the levitating pony. Pinkie Pie giggled before joining the rest of the group.

“Alright. But why do some of you have wings and horns?” the creature asked. Getting off the bed and standing on his legs.

“Simple, there are three main races here. Earth ponies, Pegasus and Unicorns. But the Princesses like myself, Celestia and Luna are alicorns, which have both wings and horns.” Twilight said.

“Now, it’s time you tell us who you are.” Celestia said.

“My name is Luke. I am a human.” Said the creature.

“Nice to meet you. My name is Twilight Sparkle.” Twilight said. Luke nodded.

“I am Rarity darling.”

“Howdy, I’m Applejack.”

Luke noticed Fluttershy hiding behind Twilight.

“Is she alright?” Luke asked.

“Oh, this is Fluttershy. Sorry she can be a bit-“

“-Shy?” Luke finished.

“Yeah.”

Finally Rainbow Dash started to fly in the room again.

“I’m Rainbow Dash.”

“Hey. I have a question for you. How long where you watching me sleep for?”

This question made Rainbow Dash blush furiously, and the others to try and hid their laughter.

“W-What!? I wasn’t watching you sleep!”

“Then why did I wake up to see your face right above mine?” Luke asked again.

“W-Well. Uh…Ya see. Uh…” she kept on trying to come up for an excuse for ten minutes straight.

“Ya see- ahh…uhm.”

“Will you please stop?” Luke asked.

“NO! Wait!.. Umm.” Luke sighed.

“Alright, I’ll let it slide this once.” Luke said. Rainbow Dash sighed in relief. It was then Luke noticed the metal brace on his left arm.

“I don’t remember this. Did you put it on me?” Luke asked.

“No. we found it on you when you crashed.” Luna said. Luke noticed the button with a sign he knew too well.

“How?” he whispered, he slowly and carefully. Pressed the button down.

“Wait! That might not be-“but before Twilight could finish. The brace suddenly shine a bright white light before blinding everyone in the room.

As their vision returned to them. Their jaws dropped as Luke had completely changed. He now had a small beard and as wearing the clothes and weapons of the creature that had killed the Changelings in Manehatten. He slowly touched his beard and grinned.

“Cool. I look just Like Edward Kenway… apart from the hair.” He said as he pulled out one of the swords.

“Hmm…I think these are Pistol Swords.” He said as he put the sword away and pulled a pistol out of his chest holder.

“Golden pistols. Nice.” He said as he put them back. He then saw all the ponies with terrified faces.

“Oh no! I wouldn’t use it on any innocents. I swear!” he said, putting the pistol back. He then saw his left metal brace had the sign, but instead it was below the button. Which had another sign he knew, a blue lined heart. He pressed that as he then transformed back into his normal self.

“Wait…maybe I have one.” Luke said.

“One what?” Rainbow Dash asked.

Luke said nothing, he looked at his right hand before holding it out in front of him. Everypony in the room’s jaws dropped again as a bright flash and in his hand was the key that had slashed those dark creatures attacking Ponyville.

“A Keyblade.” He said.

“Oh! Oh! Me! Me!” Pinkie Pie said waving her hoof in the air. Luke chuckled at this display.

“Yes Pinkie?” Luke said as he slowly lowered the weapon.

“Is that what a Keyblade is?” Pinkie asked pointing to it.

“Yes, it is.” He said as the Keyblade disappeared. He noticed the gold ring on his right hand and the small button with an emerald on it.

“I don’t know what this is.” He said as he pressed the button. He glowed again except he was completely different. He looked like the Red hedgehog from the Grey guard attack in Canterlot.

“Ahh. That makes sense now.” He said.

“Luke. I believe there is something we should show you.” Luna said as the group of eight ponies and one hedgehog made their way to the hallway. They soon arrived at the painting that had appeared.

“Luke, do you know what any of these signs mean?” Celestia asked.

“Yeah, I do. There all signs from games back where I’m from. ” He said.

“This sign here. The one that looks like an A. it’s the sign of a very special creed. Called the Assassin’s creed.” He said. The reminder of Luke’s weapons and what they saw before made them tremble in their boots…at least the princesses anyway.

“This sign here. The blue heart. Stands for something called Kingdom Hearts. And the keyblade was your main weapon in the game.” He said.

“And this is a Chaos Emerald. There are seven in total on the planet Mobius. They contain the power to create peace or destruction.” He finished.

But before anypony could reply, a giant explosion shook the ground below them. Once the tiny tremor stopped. The group looked outside and gasped. A hole had been blown out of the Canterlot wall. And little grey blurs where pouring into the city.

“Well, time to see if I have the same powers as Sonic.” Luke said as he got ready to run for the door.

“Who’s Sonic?” Rainbow asked. But she was soon shocked as Luke had ran out of the hallway in a blur. She watched as the red blur made its way through the city, towards the grey blobs.