Fate: Executioner

Prologue

The Fourth Holy Grail War coming. A fierce battle between Magi and Servants, ancient heroes of legend. The Holy Grail, a supposedly omnipotent wish granting device, was discovered centuries prior by three powerful Magi families, the Tohsakas, the Einzberns, and the Matous.

Over the centuries, these wars had been fought with the seven Masters and there Servants: Saber, Archer, Lancer, Caster, Rider, Assassin, and Berserker, and whoever was the last Master/Servant pair was left standing would get both the Master's and the Servants wish granted.

However, this war was to be different. Unknown to the Magi, the Grail had been corrupted.

During the previous war, a 8th Servant had been summoned. Avenger was a weak servant without a Master. As result, this Servant had been eliminated easily and quickly by the other Masters. Instead of returning to the Throne of Heroes, where Servants stayed when not summoned, entered the Grail itself, becoming the devices consciousness.

And this 'consciousness' was currently deciding who would be this Wars Avenger. Since the Avenger class doesn't need to have a Master summon it, it was the Grails decision on who would be summoned. It was pondering what hero should fill it's former role as Avenger. It was debating what kind of hero this servant should be, since there was no set rule for what the Servant had to have done in life to get that title. Until I smiled, with as much as a grin that a bodiless entity could possibly create, as it decided on what type of servant Avenger should be.

As a Berserker needed to have been consumed by madness once in their life, Avenger would need to have died without vengeance. However, that was only half the job done, as it now needed to find a hero to match this parameter. It searched and searched throughout the entire Throne of Heroes, but none of them were worthy of fighting in the Former Servants eyes.

Until, it came across a pitiful excuse for a hero that had no legend, no one even knew his name, what his weapons were called, or what he had done in life to obtain Hero status, however, it had the most important part.

He could've been summoned as Berserker with how consumed with the lust for vengeance he was. He was unpredictable, merciless, and, most importantly, his personality made him very interesting in this dark entities 'eyes'. The Grails corrupted consciousness "smiled" as it realized it had found the perfect "hero" to be the Fourth Holy Grail War's Avenger.

Kiritsugu Emyia and his wife Irisviel Einzbern were still slightly shocked from the servant they had summoned, instead of the King of Knights, that had summoned some woman in a battle dress. Kiritsugu was about to ask who they were, when the circle lit up again.

Unlike the slow and gradual build up of the energy that happened when they summoned the last servant, it had begun to absorb Prana at a immense rate, seemingly trying to gain as much in the shortest amount of time possible.

The circle had started to release a high-pitched noise that made the two people and servant witnessing this event to cover their ears, and begun to glow so brightly that they had to turn away and squeeze their eyes shut.

But, as soon as the event began, all fell silent. As the confused group turned around, they all collectively gasped as they looked at the man who had appeared in the circle.

He wore what looked like once was a fine set of white robes, but the sleeves were ripped apart and he was barefoot, and it appeared he had wrapped torn sleeves and pants legs around his hands and feet. However, his most noticeable trait was a head of white hair that glowed in the moonlight, that had grown wildly down to his shoulder blades while a a few strands were in his immensely scarred face. Both of his eyes had been wrapped in cloth eyepatches, the one on his right eye was a black cloth with a pentagram dyed into it, while the one on his left was a white cloth with a cross.

He 'looked' around until he stopped at Kiritsugu and said in a surprisingly gentle voice and smile. "Thank you." Kiritsugu started blankly before regaining composure and replying. "For what?"

The man's smile grew a little as he slowly bowed. "For not killing me as soon as I arrived. I know that most people wouldn't hesitate on blowing a mystery Servant to bits." Kiritsugu just stared at this strange display.

First, when he was expecting King Arthur to get summoned, he got some girl in a armored dress. And then a mystery, and apparently blind, Servant appeared and thanked him for not doing something that the Magus Killer knew was only because he didn't have his Origin rounds on him, that he didn't instantly end this Servants life.

"I must show my gratitude to you, I don't wish to leave a debt unpaid." The Servant said while rising from his bow. "Therefore, I will help you prepare for and fight in your name in the upcoming war." He said before walking forward with his hand raised

He was a few strides away until what looked like a blade made from air pointed at his throat. "Not a step closer to my Master." Saber said threateningly.

The other Servant chuckled and 'stared' at the blonde. "Good work Servant, protecting your master like a dog with its owner." "Don't worry little dog, I am lacking a Master and I was never a good enough liar in life."

As the two Servants and Master stared at each other, Irisviel decided to try and defuse the situation by finding out who exactly this servant is. "Um, excuse me?"

When she had all of their attention, even though Saber kept her blade at the other Servants throat. "W-what is your class?" the man in question looked at her with a confused look, until he realized what she meant and laughed until he felt the invisible blade poking his throat, which made him quickly stop and gain a serious look.

"I am the Avenger class Servant of the Fourth Holy Grail War." He said with a serious expression and voice, before a smile and an almost childlike giggle quickly reappeared. "Man, I rarely get THAT serious. It felt weird." He said with a scarred hand on his chin and grin on his face.

"So, you wish to fight for me during this war?" Kiritsugu quickly said, hoping that the offer was still on the table. Avenger 'looked' at Kiritsugu and smiled again.

"Of course, I've already gained the gift of being alive again, in some way," he said tapping his pointer fingers together, " and be able to possibly get my biggest wish granted." He said, his warm smile slowly changing to a terrifying tooth filled grin. "To obtain the vengeance that's haunted my every thought, my every dream, my very soul, for giving me this chance I practically worship you." He said as his grin widened.

This terrifying side of Avenger quickly vanished as his childlike demeanor quickly returned. "So, are we going to stay in this creepy ass church, or are we going to get the hell out of here and find me some shoes? All in favor raise their hand." he raised his hand a waved it eagerly.

Irisviel slowly raised her hand. "Yeah, I want to get some sleep. Its been a long," she checked a clock on the wall, "10 minutes."

Kiritsugu sighed. ""Alright, we'll leave. Saber, lets go." "Understood Master."

Avenger began to follow until they were about to step outside. Saber noticed this and asked what was wrong. "Uhh, its nothing, just, well." He scratched his head awkwardly, "I just don't have any shoes and there's a lot of snow."

Saber looked at him with a what-hell-did-I-just-sign-up-for look before sighing and gesturing towards her back, "I'm doing this only because we're new allies, don't expect this too happen ever again."

Avenger hesitated for less than a second before unceremoniously jumping on top of her back with a audible 'Oof' from the knight, latching his hands together and yelling "Onward my trusty steed!" at the top of his lungs.

Saber looked back at the man-child and growled at him too be quiet. He however didn't seem to notice as he tightened his hands around her neck with the already massive grin on his face getting bigger as he sensed the Kings irritation. Saber sighed before walking out the door to rejoin her Master.

Kiritsugu and Irisviel were in the car when they heard Avengers yelling, they looked out expecting, well, anything other than Avenger riding a very exasperated looking Saber piggyback while yelling about horses.

Saber looked at the cars occupants with a look that pleaded 'Help'. Kiritsugu, sighing for what felt like the millionth time that day, got out and helped carry the childlike Servant to the backseat of the car.

"This is going to be one strange war." Kiritsugu thought while trying to survive Irisviels driving, who had managed to convince him to let her drive, while Saber looked like she was trying not to hurl and Avenger held onto the seat in front of him like his life depended on it with his normally pale face turning a even paler color.

A/N: Hello, this is my first story for the Fate Series and my second story ever. I hope that I managed to get the characters right, let me know if you think any of them are OOC or not.

Disclaimer: I don't own anything other than Avenger.

Anyway, Follow, Review, all that jazz so I know that people like what I'm doing. Stay awesome, until next time

-AnthemoftheNight