It was the day of the trial. The court room was large, with dozens of benches for ponies to sit at. Paintings were hung on walls, and there were stained glass windows. Ponies from all over were waiting in anxiety for the accused to come through the doors of the back.

Princess Celestia had waited patiently. Never had she had to deal with a situation such as this. She sat at her seat, which towered all of the ponies. She could sense their emotions. “Annoyance, anxious, and fear.”. She whispered to herself.

Fear was taken over by two of her citizens. Mr, and Mrs. Shy. they are the parents of the accused. Celestia took a deep breath before taking a look at the clock on the wall. It read 3:27 pm. Celestia was not showing it, but she was getting impatient. Just as she was about to ask what the delay was, the courtroom doors opened.

Two guards came in. They were dressed in normal golden armor. They were equipped with spears, and she could sense that one of them was calm. While the other was furious. The both tugged on a set of chains and in came the accused. He was a tan colored stallion with a light brown mane. He was extremely fit, for his age.

The accused was lead to his podium. As he passed his parents, Celestia couldn’t help but shed a small tear. This stallion was only a teenager. She knew she couldn’t let that get in the way. Celestia took on a serious face and said to her assistant. “Read the charges.”.

“Grim Shy, youngest to ever be enlisted into the royal guard at the age of sixteen.”. The assistant had read Grim’s title. “You stand here today after being given a direct order from your commanding officer.”. The assistant continued. “Instead of following that said order, you attacked, and killed him. You didn’t just kill him, you left him with no arms, a broken ribcage, AND internal bleeding.”. The assistant finished.

The spectating ponies were all fearful of Grim now. At first they thought that he was just a simple criminal. Now they see him as a monster. Mr, And Mrs. Shy didn’t look upset. They had seen the whole thing. They were fearful. Fearful of what would happen to their son.

“How do you plead?”. Celestia said, taking an ice cold voice. Every pony eyed Grim. He was emotionless. “Guilty.”. He simply said. Every pony gasped. Especially his parents. “Why do you admit so easily?”. Celestia asked with genuine curiosity.

“He had ordered our unit to attack innocent civilians, in order to kill an incognito terrorist. Not only that, but my parents, and baby sister were in the group.”. Grim had explained. Celestia was still not pleased. He may have had a good reason, but he shouldn’t have killed.

Celestia, was not showing it, but she was shocked beyond all belief. One of her commanders would give that kind of command. She would have had him questioned, but Grim had given him a death sentence. Celestia only sighed. “Grim. I had high hopes for you. You shouldn’t have killed him. You should have brought him in for questioning.”. She explained.

Grim held his head down. It was rather upsetting to look at. He turned his head, and looked at his parents. His father seemed to be at his breaking point, while his mother was holding his baby sister fluttershy. His mother seemed to be crying lightly. He quickly mouthed i’m sorry to them.

“Grim Shy. For killing your commanding officer, I must strip you of your guard title, and give you life in prison.”. Celestia said. It had pained her so much. He was young, and trying to protect those he cared for.

Just, as she was about to beat her hammer on the desk, the courtroom doors, slammed open. A mare had walked in, with a grey mane and a fancy dress.

“Now now your majesty, i don’t think that would be necessary.”. The mare said. “Oh. it’s you.”. Celestia said with a bit of annoyance. The mare stopped in place. “What? Do you not miss your old friends tia?”. The mare had said.

“You are scum Peirce!”. Celestia shouted. She then realised what she said, and bowed her head in shame. “What do you want peirce?”. Celestia said. Peirce had a smile on her face. “I want Mr Grim over there.”. She had said.

“Excuse me?”. Grim said in a surprised voice. Peirce only rolled her eyes. “Here me out Tia. Instead of stripping him from the military.”. Peirce had said. “You let him work for the rest of his military career, for me at the phobos base in Saddle Arabia.”. Peirce had said in a convincing voice.

Celestia was quick to answer with a sigh. She eyed Grim for a moment. “Grim? What do you want? Prison, or Phobos?”. Celestia said. Grim looked to his parents and sister. His parents both looked shocked that he wanted their opinion. They quickly pointed towards peirce. Even Fluttershy was pointing at Peirce.

“I pick phobos.”. Grim said. Celestia smiled. She actually was glad he picked Peirce. As much as She doesn’t trust peirce, she knows that she will most likely use Grim as a guard.

Grim was released from his shackles. He approached his parents and sister and hugged them all tenderly. He continued to cry in their embrace for several minutes before peirce approached. “Alright Grim lets go. We have work to do.”. Grim went wide eyed. “Can I at least say goodbye?”. He asked. “Fine.”. Peirce said as she walked out of the room.

Pierce began to quietly trot her way out of the courtroom. All the while, Celestia was glaring daggers at her. Celestia had hated Pierce for reasons unknown to most other ponies. Reasons the would get you killed for asking about them.

Grim hugged his family as tight as he could. “I’m so sorry.”. He said. He began to repeat it over and over, each time it got quieter. “It will be alright. You did what you thought what you thought was right.”. Mrs. Shy had said.

Fluttershy, who was completely oblivious to what was going on reached out to her older brother. He smiled down at her, and gently lifted her from her mother's arms. He booped her snout, which made fluttershy giggle.

“Alright, I got to go away for a while.”. He whispered to her. “Keep an eye on Mom, and Dad for me ok?”. Grim said. Fluttershy made a raspberry noise. Grim gave her back to Mrs. Shy. Grim then went to his father. He hugged him lightly. “Please stay safe son.” His father had warned.

Grim only chuckled. “I’ll try my best Dad.”. He said. For one last time he had hugged his family, kissed them all on their cheeks and left with pierce, to phobos, in Saddle Arabia.

Three Weeks Later

After being on a transport to a remote location, Grim and his teammates were going to investigate, strange occurrences of disappearances, and loss of contact to the entire south side of the phobos base.

Grim was wearing an all green armor with a grey helmet with a blue visor. His teammates wore similar armor. As they were getting off of their transport, they walked towards the entrance of the south side of the base.

Grim was about to be the first person to go in, but a hand had stopped him. “Hold up there traitor. You get to watch our backs. Why don’t you stand guard out here.”. His team leader had called.

Grim’s team was informed of Grim’s past, and they would call him the traitor. They didn't trust him, and they gave him a look that said they would rather kill him than be around him. Though Grim had just ignored them.

He sighed and nodded his head. He grabbed the experimental pistol, the facility had invented. His teammates grabbed other weapons such as shotguns, and machine guns. One of them had even taken two m16s.

They proceeded to walk through the door, and leave Grim to stand guard with just his pistol. Grim took the time to pull out a piece of pen and paper out from his pocket to write to his family.

He made a habit of writing to them once a week. He began to think about what he was going to write about. He tried to be as discreet about what to write to his family as possible. For about an hour or two he was completely silent, as he had written his letter.

Just as he had finished, several pained screams were heard from the inside of the base. Grim looked terrified. He wanted to enter, and help his comrades, but he was being held back by orders by his superiors.

Another audible scream was heard. Grim shouted at the top of his lungs. “CELESTIA DAMN IT!”. He cursed. He then kicked down the door, and ran inside. The door closing behind him, and locking.

The room he found himself in was medium sized with four pillars. On the ground was one of his comrades. They were badly wounded and seemed to be dying. Grim hastily ran to him. “Hey! Are you ok?! What happened?”. Grim was shouting. The dying marine looked at Grim.

“We got overrun by those things. Everyone else is trying to keep moving forward.”. The marine said. Grim frowned. “What are you referring to by those things?”. Grim asked. The Marine only coughed a few times. “You’ll find out. One more thing.”. He called. “Yes?”. Grim asked. “I don’t know why but I know you are going to survive this. When you get out of here I want you to tell my son, I’m sorry I couldn’t make it home. His name is Blue Blood.”. He said before dying from the blood loss.

Grim didn’t feel sadness. In fact he had felt rage. Only rage. He might not have known this stallion but he had a family. That was something that can’t be replaced. Whatever was here took a child's father away.

Before Grim could contemplate through his mind, an audible BANG Rang through the air. Next to the ground where Grim was crouched, was a small bullet hole. Grim turned his head to see a stallion holding a pistol but the stallion looked as though he were a zompony. He was wearing a grey armor, and he had blood covering his face. His mane was slicked back.

Grim didn’t think. He aimed down the sights of his pistol and pulled the trigger three times. The zompony grunted with a very distorted voice before falling on its back dying. Grim Felt a sudden rush. He felt as if he had an uncontrollable amount of energy, just from killing that thing. It was an enticing feeling.

Another zompony came in front of Grim. This one had no mane, and it wore a black armor. It wielded a shotgun.grim once more shot the zompony, only this one had fallen to its knees. Grim felt a desire to rush straight at it.

With speeds he didn’t know he had he charged at the wounded threat and lifted the monster over his head. Then with uncontrollable furry, and strength Grim ribbed the monster in half. Blood had fallen over the marine. All he did was smile. It was a good feeling. A desirable thirst.
Grim grabbed the shotgun. He held it up to his face, and then cocked the gun. A shell flew out of the gun, and with a smile that could kill. Grim moved forward.

He came into a room with two strange brown creatures. They had red eyes and what looked like spikes coming out of its shoulders. One of them roared and threw a fireball at Grim. he easily dodged the ball of fire and shot his shotgun. The brown creature had flown backwards and died from the impact.

The other one jumped with incredible force at Grim. It had him pinned to the ground until Grim kicked it off of him. Grim then used his free time to continuously punch the monster while it was down. Blood splattered everywhere, as he continued to punch its face. He then delivered one final blow which had caused its head to explode in a pile of blood.

Grim moved on. After killing those two he felt even better. It was incredible. He came upon a safe room. He quickly pressed a button which would transport him to the next area of the base so he could catch up with the rest of his team. That is if they are alive.

Three years later

That started my quest against the wicked here in tartarus.

Interesting… look this armor will enhance your ability to absorb argent energy.

You mean I could before?

When you first started your quest you said that after killing your first demon, you had an amazing feeling, an unquenchable thirst for their blood.

That was me absorbing argent?

Yes! This armor will allow you to absorb it into several different levels at once as well!

Tell me how this armor can help me.

When you absorb argent, you can gain a demon's health, gain their strength, their life nourishment and more.

So I don't have to wait to find a safe place to eat demon meat? The argent just gets turned into food?

Exactly! Also only you can wear the armor. The armor is also unbreakable and is completely weightless on you!

You had me a long time ago

Over the past three years Grim had learned a lot about tartarus and the demons. He also learned that he is the only being alive that can absorb an energy called argent. After killing all the demons in equestria and liberating the phobos base, he had one last letter he had written to his family. A very thankful pierce was willing to deliver the letter to his parents.

Grim had closed a hell portal that pierce had accidentally opened. Though he had to close it on one side. The demons side. Princess Celestia, who was informed of the amount deaths had been told what happened and did what was best for the world. She wrote the whole thing off the records. To not start panics.

Back in tartarus Grim had met a human. The human didn't remember his old name, although he only remembered what the demons had called him. The Betrayer. He was known as this because he willingly gave his universe to the mercy of the demons, to resurrect his son. His son did get resurrected although he became a demon that was once known as the Icon Of Sin.

Before Grim had met The Betrayer, he had destroyed the Icon Of Sin. The Betrayer was actually happy about it. His explanation was that his son no longer had to suffer.

Grim wore a suit of armor The Betrayer gave him called ‘the praetor suit’. The suit had made Grim hundreds if not thousands of times more powerful. He became what demons had feared most. The armor, and the argent energy he absorbed had changed his physical appearance.

He now had the physical of a human. He had pale skin and light brown hair. His new appearance didn’t bother him at all. Mostly because he was in his praetor suit and slaughtering demons with a might sword.

For ten long years Grim was on a massive killing spree. Every time he killed, he seemed to have gotten faster and stronger. Eventually the demons had tricked him and forced their blood temple to collapse on top of him.

The impact had left him unconscious, and for the next nine years, Grim would lie in a tomb, asleep. His praetor suit would be next to him. He lay there for what felt like an eternity until he heard a voice.

They are rage,
Brutal, Without mercy,
But you will be worse,
Rip and tear,
Until it is done!

As the voice had finished Grim’s vision had came back to him. Strange metallic pincers were directly over his head. He looked down from the pincers to see he was in chains. He yanked on them. He heard a familiar growl. He turned his head to see what looked like an infected human walking straight for him.

Grim yanked on his chains harder and eventually pulled free from them. He slapped the infected human and slammed its head on the edge of his sarcophagus with enough force to make his head explode.

He then pulled his other arm free of its chains and he stood up. There were three other infected in the room, and a pistol at the foot of the sarcophagus. Grim leapt from his position and grabbed the pistol.

With quick aim he killed the infected with headshots. He then proceeded to inspect hi new weapon. It was unlike any pistol he had ever seen. By the energy it was giving off it was powered by argent energy. That would last a lifetime if it was in the hands of Grim.

He walked over to a doorway and saw what looked like a control panel but very advanced. Grim pressed is hand against the control panel. A strange human woman formed as a hologram. Grim took this in as information to keep in his head, that humans were technological.

“We have to contain this.”. The woman said. Although her voice sounded very familiar to Grim. He ignored it and looked at the now open door. It revealed his armor but some things were different about it. It seemed technological. ‘The humans seemed to have tampered with it.’. Grim thought.

He slowly proceeded to place his armor on.

Sixteen hours later

Grim felt numb. He had to go through the electrical feeling so many times within the past few hours. He had to deal with the demons invading this dimension because a woman named Olivia Pierce thought that the demons would paint a better picture for the universe.

She had her chance to have this little dream when Samuel Haden was messing with Tartarus to gain its resources. Grim had fought for the past few hours and successfully killed Olivia Pierce. Now he is face to Face with Samuel Haden for the second time that day.

“That’s it. You’ve won. You closed the hell portal and stopped the invasion.”. Samuel had started. “But its come at a cost. Argent, Vaga, this ENTIRE operation.”. He continued. Little did he know that Grim actually saved Vaga into a back up chip for his praetor suit.

“You see I've watched you work. Come to understand your motivation.”. He claimed about Grim. “You think the only way is to kill them all, Leave nothing behind, and you may be right.”. He said. “But we can't just shut it all down! Without argent energy it will be worse.”. He stated.

Grim felt his chest getting heavy. This was the first being he had ever allowed himself to not shoot, and he was Betraying Grim Like this? “I am not the villain in this story. I do what I do because there is no choice. Don't expect you to agree.”. Samuel said sadly. He then used the magnets in his hands to bring the crucible from Grims side, straight to his hand.

“But with this, we can continue our work.”. Samuel held onto the crucible as a voice started to speak. “Tether reroute courdenets changed.”. The voice had said. “I can't kill you, but I wont have you standing in our way!”. He said has he activated the crucible. The crucible created a long red sword with many demonic symbols on the blade.

“We are done here.”. He says as he starts walking away. Grim starts to move forward but is cut off by the Tether activating. He is hit by a wave of electricity, before he is thrown back in tartarus. As he arrives he looks up to see hundreds if not thousands of demons ready to charge straight at him. Though they are all hesitant. “Kill the Doomslayer!”. A demon had somehow yelled.

All of the demos suddenly started to run at once. Grim, who only knew himself now as the Doomslayer cracked his knuckles. ‘Just another day in hell.’. He thought to himself as he too began to charge.

meanwhile

his appearance had changed to one of a human due to the spartan experimentation. most of his foal-hood friends had died because of the operation. he currently wore armor as green as grass, with a dark yellow visor. the master chief aims his sniper rifle up at a mare who is leading a major rebellion against the zebra republic. Chief takes a quick breath. he had been doing this for years. this was no different.

with no sorrow in his mind, he pulls the trigger.

Author's Note

It took me SOOOO long to finish this. its like 11:32 pm. anyway I hope you enjoy this, I followed the doom guy is doomslayer theory, if you didnt like this then I would like to know why. yatta yatta yatta
be prepared for the actual story