A few things before the chapter begins , 1 , I am horrible at writing stories , 2 , I've watched RWBY from Volume 1 Chapter 1 to Volume 8 Chapter 4 , currently the last one uploaded , and will kind of continue the story from that point on. When the next chapter arrives , I'll try to write it in to fit the story I'm currently making , 3 , I know the lore of DOOM really well , and I will use that knowledge to make this story as good as I can , though I'm pretty sure it will suck , 4 , obvious spoilers for both series , so I'd recommend watching RWBY series and looking at videos about the lore of DOOM , preferably 2016 , Eternal and Ancient Gods Part 1 , that were made by Midnight and RipNTear Gaming , trust me , the demons aren't weak , it's the Slayer that is overpowered and makes everything look weak.

Please read everything , including the little part after the ,,To Be Continued". That is if you're going to read this whole chapter.

Rated M for future gore and murder. Wouldn't say everyone under age of 18 shouldn't read this , but be at causion.

RWBY is owned by Rooster Teeth , while DOOM is owned by Bethesda.

Chapter 1

The Slayer's Arrival

Urdak , Equestrian Holt

There he is , the Dark Lord in a physical form. The Slayer , hearing the Father's words , knew that he had to end him fast. He charged at the Dark Lord and raised up his fist. The Dark Lord raised his fist too , and their hands clashed. However , as they are both Primevals , Gods , just the clash of their fists was enough to rip apart time and space , creating a gap , which sucked both of them in. They were sent onto different places.

Remnant

The worst happened for Remnant , the Grimm have been attacking city of Mantle , the government of the Atlas kingdom had went against their own people to continue with their plans of stopping Salem from getting the relic , and the heroes are in a lot of trouble , some captured , some under extreme cold , and some trying to infiltrate Atlas. They face trouble , as they know they can't beat Salem , but still go forward , to try and stop her.

On the ground , a bit further away from Atlas , there was a huge hole. The gap that sent the Doom Slayer and the Dark Lord away from Urdak , had some rough spots for the Slayer. He got back up , angrier then ever , because he was so close , yet so far from killing the one behind all of the demonic invasions. He looked up to see the shattered Moon. Didn't surprise him , as he saw the same from Earth. His armour , the Praetor Suit , had stopped working till he got back up. He heard a small click.

Intern: That clash of fists sure was powerful. You were gone for 10 minutes , I didn't know what to... right , sorry about that. Although this place seems like Earth , it's not. If it was , I'd have stronger signals , but I don't.

The Slayer started walking , till he saw the kingdom of Atlas , and the city of Mantle. The place looked horrible , parts of the ciry were burning and in ruins , all the more the Slayer could see a line that separated the sky to blue and red. He couldn't feel demonic presence , but he knew that this wasn't gonna be good.

Intern: I'm unable to create a portal from your destination to the base. You'll have to get more info on this world to even begin doing something like that. That city down there should be good for now.

He couldn't be bothered with what Intern had said , as his eyes were onto the red sky , getting closer to him. The Slayer ran towards it , hoping to get more information.

Intern: So , you're gonna see what's there? Well , better to know what we will be up against , I guess.

The Slayer just kept running , until he heard footsteps... more of dog like footsteps. 3 Beowolves jumped to attack him , though his reaction with the shotgun led to one having it's brains blown out. The second tried to slash at the Slayer , though he shot it first. The last one , he punched once , and it was liquified into blood. He knew those weren't the demons he fought. The demons of Hell take over dimensions , burn everything they see and run away if needed , to group up and attack even harder , but those things were mindless and just went for him first , without caring for their lives. The Slayer continued to run , but this time , he went for Mantle. However , he wasn't normal , even with all that armour , he was still insanely fast. He was nearing the city , but he noticed masses of the monsters , similar to those he fought earlier. The same masses started running in his direction , though , he pulled out the Rocket Launcher and fired while still running. He then switched to the Super Shotgun to grab onto one of them , took the shot and swung himself over the army in front of him. He threw all of the grenades he had , and threw down sticky bombs , to slow down the Grimm. He then charged the desteoyer blade on the Balista and fired , slicing all of the Grimm into half. He then continued to run , until he got to the center of the city. He was caught by a few drones on camera , with the info getting to Atlas.

One of the workers that got the info contacted the general of that place , Ironwood , and had sent the footage. ,,This guy just showed up out of nowhere and is heading for the center of the city" , that's the message sent.

Ironwood had thought that whoever that person was , would be having a death wish , espetially after what had happened earlier with Ruby and her team , after they escaped. He ordered the guard to be at high alert at all times. Many soldiers armed with some of the best guns they have , it was perfect to stop Grimm and huntsmen from getting inside.

However , this is the Doom Slayer we are talking about. He saw a Nevermore fly in to swoop him , though he quickly jumped and got onto it , forcing it to go up , though it went a bit further away from the kingdom. When he knew he could land onto Atlas , he jumped off and fired the Ballista , blowing the bird's head off , and giving the Slayer a small boost. He made a bit of a rougher landing , as he dropped onto both of his knees. The whole Atlas had shaken up from the impact. The guards immediately went into possitions , pulled out their weapons and aimed at him.

One of them yelled: Onto the ground now , or die.

The Slayer couldn't be bothered with them , so he just started walking closer.

The same soldier said: Open fire.

They took shots at the Doom Slayer , though as the weapons of Remnant are nowhere near as powerful as the weapons that the UAC and ARC had in their disposal , it felt more like someone threw plushies at him. He ran. The soldiers were at disbelief , although not hostile to them , he took no damage and no recoil from the bullets that hit him , and he ran really fast. They gave Ironwood a message , about the man just getting through like they are nothing. He was sure that the man came to stop him , though he didn't know on whose side he was. Ironwood ordered to close the doors , as he knew his forces wouldn't be able to take him on , espetially considering he flew in from a Nevermore.

The Doom Slayer just continued to run , as an objective opened up in his hud.

Intern: So your plan is to get in there by force and then ask questions huh? Well , if you can link me up to their systems , I could get info on their weaponary and their forces. Maybe I could get a contact with them. The next part is up to you , tactical or busting in.

The Slayer knew he had to get on their good side , as the people that shot at him were just soldiers taking orders. However , he had no idea of what happened before , so he hoped for the best to happen. He was getting near the Atlas Academy. The biggest place is usually the place that has the best communication systems.

Intern: There's no way you're entering that place without murder , I can scan through your helmet that there are many armed forces in the building. Try approaching something smaller.

The Slayer was mad , though he understood the situation. He didn't want to kill people unless he absolutely had to. His targets are everything that threatens humanity from the outside , once that's taken care of , humanity can rebuild itself. He looked over , and saw a building. The headquarters of the Schnee Dust Company. He hurried over there , to not waste time. He saw a few people in the building through his helmet , which made him think it wasn't defended by anyone major. He saw a small ship outside of the building. He just touched it , and the red dot on the Praetor Suit went blue.

Intern: That will have to do for now. Lets see what I can find.

As Intern hacked into the systems to find anything he could , and getting more info on the lines , the Slayer went to the door of the headquarters and gently knocked. Nobody answered. He knocked again , same thing. He had enough and kicked the door , sending it flying. In there , from the stairway came Ruby , who looked in horror , as she saw the giant armoured man , with big muscles. She then heard a small signal from her scroll , and looked over to see an unknown person calling. The Slayer pointed his finger at her scroll , which she then answered to.

Intern: Hello , is this thing on?

Ruby: Who is this?

Intern: Sorry for that guy there. You can call me Intern miss Rose , and that over there , just call him the Doom Slayer. He ugh... we're trying to figure something out right now.

It didn't take long for Blake , Weiss and May to get there.

Intern: We ugh , we really need to talk this one out first , before any actions are done...

To Be Continued

Well that was interesting.

Don't bombard me with stuff like ,,this story is horrible and shouldn't exist" , I already said up there that I'm not good at making stories. If you want to adress a problem that I don't see , go ahead and tell me , just don't be toxic about it , please. If you want to tell me what I should do , tell me and I'll take a look at it. It won't be guaranteed that I will put your ideas in , but if I like them , I might think about it.

As for why the chapter is more or less just the Slayer getting info and not rip and tear , the first chapter of this story was to get into the thing itself. I purposely made it with little murder , as to show that the Slayer would rather gather info on the world , and get back to his dimension , instead of mindlessly killing everything he sees. Don't worry , the next chapters will have a lot of gore , count on that. With online school being... kinda horrible , as I still don't know how it will work out , I don't know when I'll be continuing this story. Though I plan on making the next chapter sometime next week , so from 7th to 13th of December. Not guaranteed , but if there isn't any problems , it will arrive sometime then. If there will be problems , it will arrive on 23rd December.

Stay safe people.