The Royal Executioner (Reader Insert) (Undertale)

Chapter 1: The Slaughter Begins. . .

A/N- None of the art used in this story is mine.

Y/N's POV

Y/N: Another boring day as usual. Another human has yet to fall. I'm not gonna slack on my job though, we only need 1 more Soul. Once we get the final Soul, we can get out of this place! As I'm wandering through Snowdin, I find Sans asleep at his post, like usual. I suppose I'll strike up a conversation to pass the time.

Y/N: Hey Sans, sleeping on the job again?

Sans: Huh, Oh hey Y/N. Yep, you know me.

Y/N: Figured as much. Might wanna stay awake, Paps is headed this way.

Sans: Got it. What're you doing?

Y/N: Nothin' Much. Just wandering around Snowdin. Still lookin for Humans, y'know, the usual.

Sans: Figured. Welp, have a good day Y/N.

Y/N: You too, see ya.

After walking back towards Snowdin, I run into Papyrus, who's doing his daily rounds.

Papyrus: Ah! Hello Y/N! How are you today?

Y/N: Oh, you know me. I'm doing just fine. Still waiting for a Human though.

Papyrus: It's Ok Y/N! I have a Great feeling about today! I know a Human will fall!

Y/N: Alright. I guess we'll see.

Y/N: See Ya Around Papyrus.

Papyrus: Goodbye Y/N!

Y/N: Papyrus is just to nice for his own good. I fear it may get him killed. But, I can't let him down. It's been his dream for the longest time to be a member of The Royal Guard & I dont want to crush that dream.

Y/N: I'm sort of the leader of the leader of The Royal Guard. Asgore gives Me, Undyne, Papyrus & Sans orders. I give Undyne, Papyrus & Sans orders. Undyne gives Papyrus & Sans orders, despite the fact that Sans is the Royal Judge.

Y/N: I also control who can & can't get into The Royal Guard. I control basically everything that has to do with The Royal Guard. I want to let Papyrus in but I told him that he has to prove himself by capturing a Human & bringing it to Undyne. Once he does that, I'll let him in.

Y/N: One hour goes by & I get nothing from anyone. I suppose I'll head back to Snowdin.

After Heading To Snowdin

Y/N: Weird, I could've sworn there we're more people in Snowdin

After wandering around a bit, I see something startling. . .

Dust

On top of that Dust, is Papyrus's Scarf. . .

Y/N: Damnit, I knew he was gonna get himself killed! But, who would hurt someone as kind & friendly as him?

Y/N: Wait, where's Sans!?

After looking around for a while, I notice Undyne & some kid fighting. It looks like the kid is winning. . .

The kid is wearing a purple sweater with blue stripes, or maybe it's the other way around, I dont know. They're wearing brown shorts with some boots, or shoes, again I dont know.

Damn, that kid looks alot like Chara. . . Whatever, They haven't beat Undyne yet, so maybe this isn't a lost cause for her

Even after all of that, Undyne still lost. . . Just how strong is this kid?

Something I noticed though, is that time seemed to repeat itself a few times. I noticed some of Undyne's attacks would repeat themselves for some reason.

Wait, don't tell me. . .

They have the Soul of Determination don't they?

Damnit, that means that it's gonna be near impossible to kill them, permanently at least.

Whatever, next they're going to Hotland, where they'll face Mettaton.

Timeskip to After True Mettaton Neo Fight. (That's the fight I'm using for Mettaton)

What the Hell is this kid? It's obvious that they know how powerful their Soul actually is because they came back very quickly each time.

For most people with that Soul, it takes them a minute to realize what happened to them before they come back.

Whatever, all that's left now is Me and Sans. I hope that Sans can stop them. If not, then it's possible that we may all be doomed to die to this kid. . .

Skip to Sans Fight

Alright Sans, give 'em Hell!

After a long series of attacks it looks like they'll be stuck fighting Sans for a while. They're dying alot to Sans. Good.

Later (Technically)

After what felt like a lifetime, Sans finally goes down. . .

Damnit.

Well, I guess now it's my turn.

I'm Going To Put An End To This Slaughter Once And For All

A/N- Finally Done with this chapter. This is actually going to be a rather long story. Also, sorry if this chapter seemed rushed. It might not, but if it does then I apologize. This is going to be a Female Chara x Male Reader Story. Just to clear up any confusion, there is backstory so I'm gonna go ahead and explain it before I start the next chapter.

So basically, Y/N fell first at the age of 6 & then, a day later, Chara fell, at the same age. They grew up together for 5 years until they were 11 years old. That was the age that Chara & Asriel died. For 4 years, Y/N trained to be a member of The Royal Guard. Asgore, seeing how badly he wanted to get revenge for what happened to Chara & Asriel, made him The Royal Executioner. For 4 more years as The Royal Executioner, he killed all of the Humans that fell into The Underground. Y/N is now 19 Years old.

There, does that make sense? I hope it does. I also slightly changed Y/N's Bio to fit the backstory, so if you already read that by the time you see this, make sure to go back and check so that it makes sense. If it doesn't, please tell me and I will try to change it to where it makes sense. All I really changed was how long he was The Royal Executioner / in The Royal Guard.

With that out of the way, have a great day everyone!