Frisk's Brother (BNHA x Undertale Crossover)

Chara's Brother: Gaster

"Alright, what just happened!?" Chara asked Betty. "I have no idea...But how did you know about all that?" Betty asked. "Research." 

"Well, can we forget THAT and move on?" Frisk said. "Yeah.. Please. That was...Weird." Tomura said. 

"Ok.. I'll..probably do more research on what the f*** just happened and figure out who did it and how it happened." Chara said.

"Cya." They all said...All but Overhaul. I started to do research on what happened... The first thing I saw was "Dr. W.D. Gaster". And that caught my attention. I clicked the link and proceeded to read about him. "This isn't what I wanted." I thought. I scroll down and saw "Dr. Gaster Consequences". "What the...?" I read everything. One stood out to me, "Voice effects: If Gaster is around, your voice begins to sound distorted. Like 2 voices at once. It will most likely occur if you're reading Entry Number 17. As that was Gaster's entry. Originally found in Alphys' "True Lab", it was leaked across all the Undernet to see. Gaster was devistated because of this. and now, he will most likely effect your voice if you read his Lab entry. Steer clear of Entry Number 17... If you've read it, it's too late. He will appear immediately after "You should listen to 123_abc_.og.mp4"" I stopped there. All that had happened earlier..What the f*** I have to tell everyone. Even if they don't believe me.... I'll show them what I found.

First, I told Overhaul, then Tomura, Frisk, Asriel, Todoroki, Deku, EVERYONE! No one believed me. So I invited them over.

"See!?" I show them the screen but...It's different. It has an odd face on it surrounded by...hands....?

"This is what you want to show us!?" Betty shouted.

"N-No! I swear, it was something else i wrote it do- WHERE IS IT! WHERE'S THE PAPER!!?! Oh no... I remember it though! I think?...Or not. Ok, who did this?"

"Wasn't me." Overhaul said. "'Course not, you're my brothe-"

Suddenly, the face moved. It was speaking... It was.."Animated". "WHAT THE F***!?" Frisk, Betty, and I all shouted. 

It spoke, it said...

"👎✌☼😐 👎✌☼😐☜☼ ✡☜❄ 👎✌☼😐☜☼❄☟☜ 👎✌☼😐☠☜💧💧 😐☜☜🏱💧 ☝☼⚐🕈✋☠☝❄☟☜ 💧☟✌👎⚐🕈💧 👍🕆❄❄✋☠☝ 👎☜☜🏱☜☼❄☟✋💧 ☠☜✠❄ ☜✠🏱☜☼✋💣☜☠❄ 💧☜☜💣💧.. ✞☜☼✡✞☜☼✡... ✋☠❄☜☼☜💧❄✋☠☝"

It was Entry Number 17. This is bad. I'm f***ing haunted...I think? 

I ran out of the room, outside, past Dabi ignoring what he had to say. 

I ignored Toga too. "Well where's she going?" Dabi asked. "WAIT CHARAAAA!" Toga yelled

I kept running, ignoring Toga. I was crying. I was terrified...Finally I got to... Frisk and Tomura's house. Yeah... Don't ask. 

I ran into my room..and cried. Suddenly, a figure appeared. He seemed sad. It was... Gaster.

"Huh? Gaster...?" He was shocked, but didn't disappear as usual. He instead approached me and mumbled "hello." He wasn't speaking in wing dings.. 

I was scared... But felt bad. He seemed so sad, I didn't want to scare him or anything... So, I apologized for everything and then asked if I could introduce him to my friends... "Sure..I guess." He said. "I hope they aren't scared..." 

"Me too." 

And so, I asked my friends to go to Overhaul's place.. To meet the new member of the group..

Gaster. 

Betty however, wasn't invited. Not because I forgot, no. It's because... She hates Gaster.