Xgaster Stories

(Underverse and XTale belong to Jael Peñaloza! All other AUs belong to their respective creators!) [gender neutral so more people can enjoy!] This story is in the proces...

[discontinued] [Rewrite 100% Confirmed] "𝐈 𝐰𝐚𝐧𝐭 𝐚 𝐜𝐡𝐚𝐧𝐠𝐞 𝐭𝐨 𝐡𝐚𝐩𝐩𝐞𝐧!" "𝐈 𝐣𝐮𝐬𝐭. . . 𝐝𝐨𝐧'𝐭 𝐤𝐧𝐨𝐰 𝐰𝐡𝐞𝐧 𝐢𝐭'𝐬 𝐠𝐨𝐢𝐧𝐠...

Underverse self insert Includes Y/N's that might actually make sense REWRITE

So, I've been seeing a lot of reincarnated as nightmare or nightmare's parasite but they were all good even if they didn't care about killing someone if it could save so...

[art used for cover by Rua Shio! All rights to characters to their creators! Gender neutral!] "You underestimated me, I'm determined too!" "You don't und...

What would it be like if the soul of fear existed in Xgaster universe? Let's find out and see if things change

This doesn't 100% follow the original Xtale story even before the babifacation of Gaster. When a pure yet genius soul dies at the same moment one of Xtale Gaster's over...

!Art Cover isn't mine! I decided to do this because I had nothing in mind. QUICK DISCLAIMER: Glitchtale is made by CAMILA CUEVAS AND XTALE IS MADE BY JAEL PENALOZA TH...

While I/notappel1948 was making a new story I "accidentally" opened a wormhole into the story and I fell in and lost some of my ability's.including the ability...

It was difficult for me to come up with a name, so I decided to limit myself to this. To be honest, I don't know English very well, so some words will be poorly translat...

(Official Rewrite of Wanderer, my Underverse Reader Insert Fic ! ! !) *inserts cool decription* ஓ๑♡๑ஓ ➸ Underverse belongs to Jakei. ➸ Undertale belongs to Toby Fox. ➸ A...

Hello, My Name is Y/N, and I am a surviving victim of OVERWRITE. This is my story but, let's start this story from the beginning. Before I tell you my story, you need to...

So someone asked me to help them with the story or for me to write it so they can see how they can probably do it. (I did it my own way and they will have their own way...

In this story is a hidden timeline mysteriously- fixed by an unknown individual, the timeline is the XI timeline. Protective to the people he considers family, so he t...

XGaster has found an objective. To create the best universe for his human Brody. But when time passes his ideas slowly become more twisted, when will he be satisfied? an...

The XEvent is just beginning, and the arc of Bette Noire is finally over. The universe glitches from a certain Error, and results in the universes colliding. Underverse...

[sequel to Not His World Anymore! credit for cover art to unknown artist! All aus belong to their creators! Gender neutral!] It's been ten years since XGaster was killed...

Chara and Cross has been experimented on by their dad.He was trying to combine chara and cross's souls.He succeeded but there was a side effect.Ever time cross or chara...

Everything happened as usual, the man got into the dungeon, and then freed all the monsters. Everything was as always.....there were 10 time periods in this hell, I was...

𝒀𝒐𝒖 𝒂𝒓𝒆 𝒇𝒓𝒐𝒎 𝑨𝒍𝒑𝒉𝒂𝒕𝒂𝒍𝒆 𝒂𝒏𝒅 𝒊𝒔 𝒕𝒉𝒆 𝒔𝒊𝒔𝒕𝒆𝒓 𝒂𝒓𝒆 𝒕𝒉𝒆 𝒂𝒍𝒑𝒉𝒂𝒕𝒂𝒍𝒆 𝒃𝒓𝒐𝒕𝒉𝒆𝒓𝒔 . 𝒆𝒏𝒋𝒐𝒚~😘