NOTE!! THIS AU WILL NOT BE WORKED ON UNTIL I AM OFF MY VACATION !!
UnderYetDarker is an Undertale AU in which the Darkners from Deltarune are monsters in Undertale. Very straightforward, many people have done this with mainly Spamtenna.
However, I’d like to focus on other relationships as well throughout the game! Of course, as we go on and glance at upcoming Darkners they will be incorporated into the story as well.
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Who is the MC?
For UnderYetDarker, I am yet to choose a protagonist. This AU is still a work in progress and is yet to be finished!
What are the rules for Deltarune Characters in Undertale?
Nothing much, actually—The two rules I can think of are Ralsei is not allowed, as well as the Darkners must be significant enough for me to include them. So no background characters or full on species.
Will they ever interact with pre-existing Undertale characters?
Yes, they will! In fact, many of the characters we see in Undertale will change the way they think, act, or feel. Some may have their own connections to them.
More questions to be added!
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Tags:
#underyetdarkerau (main blog tag)
to be added!
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Character Sheets (to be made!)
???? (You’ll see ;)…) (Hint: The amount of letters is their name…Well, one of their names!)
Lancer (Caterpillar) & King (Horned Beetle)
Seam (Cat) & Jevil (Imp)
Rouxls Kaard (Unicorn)
Queen (Royal Beetle)
Swatch (?)
Spamton (Ghost possessing a puppet) & Tenna (Moldsmal controlling a TV)
Pluey (Cat) & Jongler (Snake) & Battat (Ant)
Sweet (?) & Cap’n (?) & Cakes (?)
Lanino (Kirin) & Elnina (Pegasus)
Jackenstein (?)
To be added!
(question marks mean I haven’t figured them out yet!)
okay so I’m on like on a vacation…but I really want to do a deltarune in undertale AU. I mighttt make a different blog for it. so. uhm. what ships would you uhm. want to uhm. see in it.
tell me, thoust worms!!
spamtenna
miketenna
polymikes
weatherkaard
seavil
mettatenna
king and queen??? idk their ship name :(
other (write in comments perhaps or reblog)
multiple of these
Remaining time: 12 hours 19 minutes
I gotta say, what you choose is…well, what we’ll see more of! but if majority chooses Spamtenna…well. It can’t ALL be spamtenna. There’s some stuff I wanna share about them in my AU, sure, but…GUYS come on…
also I’ve been really fixated on seavil so you’ll probably see that.
I’m still deciding if I’m going to incorporate the flowers btwww
okay so I’m on like on a vacation…but I really want to do a deltarune in undertale AU. I mighttt make a different blog for it. so. uhm. what ships would you uhm. want to uhm. see in it.
EDIT: THE DEDICATED BLOG IS OUT NOW!!! @underyetdarker !!!
tell me, thoust worms!!
spamtenna
miketenna
polymikes
weatherkaard
seavil
mettatenna
king and queen??? idk their ship name :(
other (write in comments perhaps or reblog)
multiple of these
Remaining time: 12 hours 19 minutes
I gotta say, what you choose is…well, what we’ll see more of! but if majority chooses Spamtenna…well. It can’t ALL be spamtenna. There’s some stuff I wanna share about them in my AU, sure, but…GUYS come on…
also I’ve been really fixated on seavil so you’ll probably see that.
I’m still deciding if I’m going to incorporate the flowers btwww
Please vote for Tenna guys I need this as much as he does
VOTE TENNA FOR TUMBLR SEXYMAN 2026 NOW!!!
Guys if Tenna wins I will open Tenna art requests (including 18+ requests on bsky) for an entire day ok and I will do as many as I’m physically capable of ok PLEASE PLEASE LET TENNA WIN!!
glooby sketches for my glooby birthday
text in sketches:
It's my BIRTHDAY!!! MIKE, the party hat, please!
It's myyy BIRTHDAY~!!!
...
and yet...there's no one to celebrate it with.
