Zach:

*a boy with dirty blonde hair and glasses falls through a portal, landing feet first, looks around awkwardly at all the people*

Umm... hi? I'm Zach. Nice to meet you...

So... How's living with Asgore? Do you go to school?

Are you friends with Asriel?

*jumps as a dog barks and hides behind goat dad*

U-umm sorry, dogs make me nervous...

*goes to grab something from pockets*

Hey, where'd my chocolate go?

Chara: Howdy Zach, nice to meet you! Goatdad is the best! I'm homeschooled though... I'd rather not talk about why. -Looks away- -Looks back up- It's okay though, because I have Azzy as a best friend!

Alphys: I thought I was your BESTIE!

Sans: AND WHAT ABOUT THE MAGNIFICENT SANS? MWEH HEH HEH!

Chara: All of you are my best friends! And you do not need to be afraid of the little pup, it only wants to play!

Sans: THAT DUMB MUTT!? IT ALWAYS STEALS MY SPECIAL ATTACK!

Papyrus: i think i know where your chocolate bar went, kiddo. -Points to the annoying dog- i saw that dog absorb it, i'm pawsitive.

Sans: -Growls-

Aria Tavoosii:

Hey Papyrus, I got a question for ya. You ever hear 'bout a guy named Monsier A or Alchemy for tge other Papyruses or Sanses? Ya know, four feet tall, has red sclera, likes to say "NYAH HAH HAH" and goes around terminating Errors and slaughtering AUs with rowdy monsters?

He's dangerous.

If Chara's done s genocide run, he'll be targeting them and Frisk should he walk this earth. Be on gaurd.

Papyrus: haven't heard of him ... sorry.

Sans: HOW DARE HE STEAL MY LINE!

Papyrus: it's not just your line, bro.

Toriel: Frisk ... that name rings a bell ... but why?

Asgore: -looks down sadly- Frisk is long gone, besides, why would this 'Monsier A' be targeting them?

*It seems as though recollection has gathered in Toriel's eyes.

Chara: What's a Genocide?

Papyrus: genocide? i have heard of many timelines, though the names i'd given the three main timelines are; peaceful, which is the timeline we're in, fluxual, where there are the biggest number of possibilities, and megalomania, where everyone dies regardless. i named my theme after the last one as i am the last hope for monsterkind in that timeline.

(These are my heacannon names to replace the three routes; Pacifist, Neutral, and Genocide, just to shake things up a bit.)