1 - 20 of 58 Works in Undertale Spamton G. Spamton/Undertale Tenna
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I Wish I Had The Words by EtterathHasFallen
Fandoms: Deltarune (Video Game), Undertale (Video Game)
03 Jul 2026
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Everyone knows the local mailman, the one who lives in the dump (not by the dump). And everyone knows he'd rather stay underground for eternity. It's safer, after all. Why bother?
Once an abandoned CRT washes up in Waterfall, Spamton may or may not have to consider a few things. Surely, this warm feeling in his chest means nothing. And surely, Tenna's dream of surface world fame doesn't involve him.
Spamton has nothing to worry about.
Right?
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don’t they know it’s the end of the world? (it ended when you said goodbye) by yoinkity_yeet_yeet
Fandoms: Deltarune (Video Game), Undertale
23 Jun 2026
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Waterfall can be a loud place.
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After the Humans win the war and seal all the Monsters behind the Barrier, Spamton makes a deal with a mysterious benefactor to get Tenna back.
This is a long-form thriller with moments of horror for flavor. The Undertale 10th anniversary stream inspired this beast of an AU fic. Sit back with your drink and/or snack of choice. I hope you enjoy!
(edited 1/26/26) -
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I absolutely love this pairing and I want to create more art for it so I hope you like it :3 this will contain fluff along with some smut .
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Spamton thought it was the end of the world when he saw a beacon of light pierce through the summit of Mount Ebott and soar into the sky, not knowing that he had born witness to the shattering of the ancient barrier that trapped monsterkind beneath the mountain.
Magic had begun to flow back into the world, and creatures he had believed only existed in fairy-tales suddenly began to settle down and live in Elysium city.
At first, he thought he could ignore it, but after his workplace adopts a monster integration program, and he is forced to look after his new coworker, he finds that his life is suddenly full of questions from an obnoxiously curious ant.
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(Undertale Spamtenna Modern Magic AU)(Minor Hiatus until 7/12, Happy Deltarune Chapter 5!!)
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And it takes you by surprise by singinghobbit
Fandoms: Deltarune (Video Game), Undertale (Video Game)
06 Jun 2026
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Spamton and Tenna are co-host on a kid show post barrier break. The two co-hosts can’t seem to get along no matter what. Noelle goes missing on set and Tenna sees a different side of spamton. Then they have a chat.
Based on the mini comic I was gonna make for the day 1 prompt spamtenna week, but it got away from me.
Not Beta read! Just gonna go ahead and post this or else I know it'll rot in my drafts.
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A Reflection of the Soul by Vinophidian
Fandoms: Undertale (Video Game), Deltarune (Video Game)
01 Jun 2026
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When Spamton’s car gave up on him in the middle of nowhere, he was already in for a bad time. But when he stood face to face with a giant monster, he still had no idea how much his life was about to change.
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Two Strange Individuals by Spiral_web
Fandoms: Deltarune (Video Game), Undertale (Video Game)
21 May 2026
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While looking for a medecine for the Dreemurrs, Tenna is shot by a human.
This one, after realising the monster is harmless, decides to take him home to take care of his injury. -
This is the second best idea that I've ever had by Leggo_My_Eggo50
Fandoms: Undertale (Video Game), Deltarune (Video Game)
14 May 2026
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Stanton was never a lucky man. Everybody knew this. Failure after failure, his destructive behavior only seemed to get worse no matter how hard he tried.
One day, he runs off into the woods, and stumbles upon a bustling city full of monsters, a city that understands him more than anybody in his village ever has, or ever could.
Tensions are high as monsters and humans are on the very cusp of war, can he truly live in bliss like this forever? Stanton finds himself at a standstill, with a very difficult decision to make.
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When Spamton falls for what he’s sure is the last time, he expects the final crash.
Instead, he lands in warm arms and a sea of glowing echo flowers beneath a sky he’s only ever dreamed of.
His husband is waiting — Mr. Tenna, gentle voice that once promised they’d escape the Underground together.Old memories bloom between them like living letters: quiet nights in hidden groves, patched-up jackets, whispered confessions under tiny stars. For one perfect moment, everything feels like it could still be saved. But some things remembered by the flowers can never be undone…
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Airwaves & Airmail by Sumochkamoya
Fandoms: Deltarune (Video Game), Undertale (Video Game)
05 May 2026
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Frisk fell into the trash heap in a desperate attempt to escape a spear-wielding Undyne.
She expected to find a way out, but instead, she found two complete weirdos.
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Echoes of Golden Cracks by thedorkyturtle
Fandoms: Deltarune (Video Game), Undertale (Video Game)
12 Apr 2026
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Life in the long abandoned trash zone wasn't easy for the married couple, but they made due with what they have been given. But how long would that independence last?
The story of how Spamton and Tenna lived in the Underground, married and with a home surrounded by the trash from the Underground and the Surface.
Series
- Part 1 of Flowerpot AU
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The Beast You've Made Me by I_want_a_coffee
Fandoms: Deltarune (Video Game), Undertale (Video Game)
11 Apr 2026
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He swallowed hard, trembling but unable to tear his gaze away from the being before him. Fear still rooted him in place, but curiosity—foolish, human curiosity—kept his eyes fixed on the way the moonlight caught the monster’s fur, the faint curl of his antennae, the glint of sharp teeth in the dark.
It should have been pure terror. And yet… it wasn’t.
And that fact almost scared him more than the monster did.
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A Spamtenna Monster/Human Undertale AU inspired by Beauty and the Beast
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- Part 1 of TBYMM Series
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"TV Time Flower Episode" by beacandy
Fandoms: Undertale (Video Game), Deltarune (Video Game)
08 Apr 2026
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* (In that room with the heart locket and the worn dagger, you looked on a shelf and found something else. A video tape.)
* (It was a little like the ones in the lab, but this one had a label written in marker, one that implied it was a recording of a TV broadcast instead of another home movie.)
* (You put it in your inventory for now, wondering if there was somewhere to bring it.)
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Little Angel of ours by VoidShroomy
Fandoms: Undertale (Video Game), Deltarune (Video Game)
08 Apr 2026
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Now that Spamton has settled into the underground alongside his new beloved Ant, they've both been getting much more comfortable with eachother and their lives.
However Ants anxious energy in recent weeks leads to a question that leaves the two expecting a new fun addition to their life that leaves Spamton both excited yet nervous to adapt to.
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Let the Past Lie by Chaos_Breeds
Fandoms: Deltarune (Video Game), Undertale (Video Game)
11 Mar 2026
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Tenna's smile was absolutely pristine. He even raised the left side, since it naturally sloped down further due to the cracks. It was every ounce of stage performance he'd once claimed.
It wasn't his real smile. This was the smile he used years ago, when he'd been so desperate to make Spamton like him. It had taken so long to let his guard down, and it had been even longer since Spamton saw that too-perfect mask.
That's how Spamton realized something was wrong. This wasn't his partner - this was a performer, putting on a show.
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Or, the one in which Suzy makes a new friend, and things are fine! It doesn't bring up any strange, unexplained past trauma at all!
... and just what is Tenna, anyway?
Series
- Part 3 of [A Trash Heap.]
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Spamton finds Tenna curled up in bed, upset about struggling to read due to his poor vision. He helps him work through it.
UT Spamtenna / Trash Heap AU.
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Tenna tries to stay celibate. Spamton makes it difficult.
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I'm Not About To, I'm Not Supposed To by Stryxiel (StarrLeaf)
Fandoms: Deltarune (Video Game), Undertale (Video Game)
19 Feb 2026
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Spamton knew what it meant getting into a relationship with a monster. So was it betrayal that the truth he knew would end up killing Tenna, or had he warned him enough already? Were the talks about running away from war and having a secret family all too idealistic, or should they still persevere for such dreams?
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A New Home for our Little Bug by xray_writing
Fandoms: Deltarune (Video Game), Undertale (Video Game)
18 Feb 2026
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Samson panted as he hiked up the side of Mount Ebott, trying his best to keep going despite the pain in his body. His back ached, his calves were screaming, his ankles felt about ready to give out by now, but still he pressed on. He needed to make it to the top of the mountain, he couldn’t wait any longer. He’d heard rumors about there being an opening at the top of the mountain, an opening that led to the underground where all the monsters had been sealed. The barrier prevented monsters from escaping, but that didn’t mean that humans couldn’t enter, or at least Sam hoped that was the case. But he couldn’t afford to be wrong, he was running out of time…
________________________Ant's monster design (the one I went with for this story) was made by @porkyuupine on Twitter.