What would you do if you were immortal? Most people don't have to answer that question. I suppose I should clarify, my name is Jack, and five hundred years ago I arrived in the country then known as Equestria, in the body of a monster known as a necromorph, namely a slasher necromorph. The first hundred years of this I spent in madness, until I was found by a benevolent being known as Luna. She reached out to me, and released my mind from the grasp of a group of beings known as the Brethren Moons. They were the ones that sought to control my mind, and they wanted nothing less than for me to be the weapon by which they razed this world. Luna fought them off, and suddenly I was my own being again. Even with this, Luna went further to help me, using powerful magical objects known as the Elements of Harmony to mend my form. I was reborn from that, given a body into not quite human, and not quite necromorph. My form was human in build, but of black, inky flesh and burning yellow eyes. I went forward to repay my debt to her, and so I became one of this world's defenders against the reach of the moons that had held me for so long. As I went forth I changed, becoming stronger in mind and body. I bore the powers of the demons that haunted me, and I used these powers against their followers. In the four hundred years I have lived by my own will I have seen many things, and I learned much.

I have raised children, both adopted alongside my wife and then taken in as students. I have taken in children, adolescents, and even adults as my followers and I have trained them as I could so they might fight beside me in the defense of Equestria.

I have buried too many friends to count, and too may of their children and descendants alongside them. I act as a guardian and friend to all their descendants that last to this day, and I will follow this duty to my grave.

I have been the sword of Equestria, and the Guard I have built its shield and so with the students I take and the soldiers I train I have kept Equestria from harm for all these centuries.

I have slain dragons, manticores, hydras, and so much more. Many have fallen in my path as I refuse anything that would harm the inhabitants of the Equestrian Empire to pass me by.

I have seen combat extensively, and I have trained my mind, body, and soul to be stronger than ever before. I have made myself a master of almost all of the schools of magic, and  have made myself a builder of machines of highest caliber.

I wield armor made from the scales of one of my earliest battles. I wield a sword made of his fangs and I fought for the liberation of those he enslaved.

I have loved and lost.

I have hated and destroyed.

I have wept and nearly been lost in sorrow.

I have heard the voices of the fallen and the lost, and I have heard he voices of demons that would be gods.

I am Jack the slayer, and I have seen the end of days.

Five hundred years ago I arrived to Equestria.

Four hundred years ago I was set free and I found reasons to live, and along with that I made friends, became a warrior, and fell in love.

Four hundred years ago I fought and played a role in the banishment of the monster Sol Daemonius that stole my friend Celestia away, and so began to prepare for Marker of Tartarus and to destroy those who follow it.

Three hundred years ago my first friends in this world save my princess, my wife, and my pet all lay slain. My team, fallen either to age or in the defense of Equestria now buried.

Three hundred years ago it was found that my body was biologically immortal. I could grow, change and improve, but unless I was killed then I would never die.

Two hundred years ago it came forward that those who followed the Marker still lurked in the shadows beyond the Equestria Empire.

One hundred years ago my wife died, fighting alongside me to defend our home, and in the same battle I lost myself for only a moment, but still when I awoke to my actions, all my foes lay slain and my own soldiers looked on me with fear.

Fifty years ago it was found that the poison of Unitology, despite our warnings to the world, had been ignored by the King of Griffica (the land of griffins) and the Emperor of Minos (the land of Minotaurs).

And now, I face a threat unlike those before.

War is on doorstep of Equestria, and I face it alone.