-10 years later-
In a bar in random town outside of Equestria a lone black figure sits and reads over some pappers.
"Hey did you hear princess luna returned and that there are six magic relics that did it think might be worth somethin?" A random patron said.
"No they'd be protected heavily most likely canterlot." His table partner said.
'Well this is interesting, but not what im interested in. I need work, haven't been to Equestria in awhile.' the Witcher thought to himself.
Seeing as there is no monsters here the Witcher began to leave his puting on his cloak, collecting all the pappers on the table and paying the owner. Once outside looking around, he noticed something out of the ordinary a thestral standing nearby and looking him in the eye.
'That can't be good.' Thinking and moving to go the other direction only to see another thestral. 'This is not good what do they want?' When somepony cleared their throat behind him.
"Are you black scale?" the pony behind him asked.
"Yes" he spoke moving to his steel sword.
Turning around to look at who it is only to another thestral this one older.
"Good, we have a job for you" she said to him.
"Ok then when and where?" Asking sheathing his sword.
"Im merely a messenger, please come with us and everything will be explained to you" she said.
Seeing no point in asking anymore he gestured with his hand to lead the way. As they walked they came upon a carriage. 'Who ever owns that has monye lets see who it is.' The carriage was gold trimmed and white with purple curtains. Looking to the older thestral mare opening a door and gestured to get in. Upon entering he saw another pony inside.
"Princess" he spoke to her.
Then he noticed a smaller alicorn blue mane and tail and dark blue fur. "Who's the small one next to you?" He spoke to her.
"Mind thy tounge foal, tho not recognize your princess?" She spoke as the other one looked ready hit her upside the head.
"Luna! let me speak to him, well this is my sister luna and i'v come to asked you to do a job for me." The princess explained.
"Ok what is it? a monster your guards seem so eager flee from." The Witcher said. Noting the princess's face scrunch up then return to normal.
"No actually, I want you to bodyguard six mares. You'll be paid and will be provided accommodations as needed for you, the job is simple go to ponyville and keep them safe." She explained.
'seems easy, but nothing is ever easy.' looking to the princess he began "very well, but i will be paid weekly and ill chose where i stay." He spoke to her.
The blue one huffed. "Thou will do as instructed to do isth that clear peasant?" She spoke.
In a flash the clawed hand of the witcher wraped around her neck. "Make no mistake moon ill kill you for you seem to for get you have no power nor any say in the matter your sister is the contact holder not you." Letting go and sitting back down. As she got her breathing back under control she glared at the witcher
"Yes that seems acceptable" she spoke keeping her eyes on her sister.
"When do i start?" He asked.
"We can have you there soon if you wish?" She asked.
"Yes that'll be fine by me" he finished.
"Then lets be off, i take it you'd like to sleep?" She asked him hoping for the opposite.
"Yes id like to sleep so i can be ready for when we get there." Getting in a comfortable position.
Several hours later
(Twilights pov)
"Ok girls the princess asked us to meet her here apparently she's bringing somepony here and theyll be our bodyguard she'll explain more when she gets here." Twilight explained.
"Twi we dont need some stupid guard, all they'll do is get in the way of our lives." The prismatic pegasus complained.
"Actually rainbow she said it was one pony and a mercanry at that too, now that i think about it why a mercanry?" The purple unicorn asked aloud.
"Well ah sure think the same as rainbowdash here he ain't nothin more then a money hungry varmit. What can he do that makes the princess think he'll do better then the guard?" The farmpony asked.
At that moment the door to the library open up to a dark figured pony with ruby red eyes enter.
As he moved in the six mares noticed another fact THIS PONY IS ARMED AND DANGEROUS.
Twilight walked up to him slowly. "Hello um can i help you?" She asked maintaining some distance 'something about this pony is bad, my instincts tell me to run but why?' She thought to her self as he stood next to the wall and leaned against the wall.
"Well you sure know how make an entrance black" came a familiar voice.
"Princess Celestia" at that all except the Witcher bowed.
"When i received word you were comin and to get all girls together. But what is this about needing a bodyguard and who is this?" Pointing to the Witcher.
"Well he is your bodyguard twilight and it about the s-" she was cut off by the cloaked pony.
"As the six of you are unaware of, those elements are wanted by others outside of Equestria, i was in a bar several hours earlier and some were discussing that they would like to steel the elements but were discouraged when they placed in canterlot castle." The witcher explained. Everypony looked to him then to the princess.
"Yes thats the reason he is here, and this is not up for discussion. Iv also seen his skills." She explained.
"One ghoul doesn't count as a shiw of skill" the Witcher proclaimed.
"Well why show us your skills there are reports of monsters in the area and on sweet apple acres as well." She began at same time as a stack of pappers appeared on the table. "When your ready you may choose from these." She finished.
He reached down to look over the pappers most were just details about the beast, others were the casualty reports, only five remained and from them he chose one looking it over carefully. Placing it down moving up the stairs. "Ill need some time to get ready" disappearing upstairs.
Looking to the papper all the mares gasped in alarm even the princess's eyes widened in alarm, there on the table was the image of a beast that was just as dangerous as nightmare moon.
Minutes later and the dark pony returned coming down stairs was a black armored thestral 'wait thestrals are a military society and the princess said he was a mercanry what happen to him to be like this.' As he came down more details became lnow such as the necklace around his neck it was in the shape of a dragon, next was his swords instead of one there were two one with a standard guard and one with a triangular guard. Lastly was his belt another dragon head next to were vials and small spheres as well a hook and rope, a very large knife strapped to his right leg he was lean but not skinny his gloves looked like claws.
"I-is the by chace a better monster to fight? Maybe this one, it has a pack, or this one maybe?" As the princess continues he shook his head.
"No" at his answer he moves to the door and outside.
"We should get him back here now! He'll get himself killed." Applejack proclaimed.
"No try as we might he wont chage his mind, he is no doubt strong but im not sure if he can fight a creature like this." The princess explained.
Following the black pony out , he moves with sllw but steady pace.
"Has any ya'll noticed he dont make no sound?" Applejack asked.
"Yeah he steped on a kinds of leave on this path and not sound came from them. Where did you meet this guy at princess?" Rainbiwdash asked look to the monarch.
"10 years ago i meet him at small mining village, appeared when my retreated from the fight of a small a ghoul as he stated and killed it in one siwpe of his sword, after that i haven't seen him since but i received word of a pony of his description working outside of Equestria he may not look it but he is strong and dangerous smart too." As the princess finished the others look to her then him.
"Princess if he is a decade old then why does he look like our ages?" Rarity asked.
"Thats a good question Rarity and to that." She paused. "I don't know he is an enigma to even thestrals as well." She explained.
"I thoght so. His eyes are red draconic, thestrals have yellow catlike eyes." Twilight explained.
As they group continues to follow the dark thestral one thing is clear he is a mystery and one that shouldn't besolved.