Rockium
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Recent works
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Summary
Because Mettaton wakes up, the surface now a dream come true, and the sun rises with him.
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cherish these few specks of time by Rockium
Fandoms: Undertale (Video Game), Everything Everywhere All at Once (2022)
04 Dec 2025
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Summary
"O-okay, fine! Fine! I'll tell you, just don't laugh," she surrenders, face flushing hot, "you know about alternate universes, right? I told you?"
"Of course." He leans forward.
"W-well, there's got to be some universal constants across most universes, right? So, uh, I was just wondering..." and her voice softens into a pink shade of shy, "do you think we would be friends? In every universe?"
(Or: Alphys and Mettaton, across timelines and lifetimes and universes.)
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Summary
Ghost monsters don’t have daemons — that is, until they become corporeal.
Napstablook doesn’t know this, when they end up trapped in Mettaton’s dead body.
Neither does their daemon.
Series
- Part 1 of a different side of me
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Summary
In a timeline where no one may grow up under the sun, Dess sneaks Noelle out to Waterfall.
(Or: the kids have one good day.)
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Summary
So: he has time off. Time off means he is not performing. Time off means he has to do something else, and unfortunately, he’d already made the calls and set the schedules for his future plans within the first two hours of his free time, so.
(Time off means time to think. Time to think means time for his mind to wander.)
(It always wanders home.)
In which the ghost cousins are alone. Old habits, of course, are always there to remind them of a time they were not.
(Written for the Ghost Cousins zine.)
Recent series
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Summary
Ghost monsters don’t have daemons, and Napstablook knows this well — that is, until they possess the shot-dead body of their estranged cousin in a bid of desperation, and a snail daemon makes itself known…
(Or: an Entity NEO daemon AU. When you were once one being and now are split into two — entirely on accident — how can you even learn to live with your regrets, let alone yourself?)
- Words:
- 81,150
- Works:
- 1
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the great big “what now?” of the in-between and after by Rockium
Fandom Undertale (Video Game)
25 Apr 2023
Summary
The subcategory of my (very, very spur-of-the-moment) Entity NEO fanfics that kinda spinoff a bit more from the main storyline, because as you can see I am terrible at putting anything longer than 2k in the designated oneshot collection fic.
- Words:
- 30,118
- Works:
- 4
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the thoughts of ghosts and other things along the way by Rockium
Fandom Undertale (Video Game)
03 Oct 2022
Summary
The thoughts of and about one particular ghost(bot), and the faces and friends they find in all their soul searching.
Or, Entity NEO fanfiction. That works as a summary too.
- Words:
- 66,189
- Works:
- 8
- Bookmarks:
- 2
Recent bookmarks
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Summary
Chara, Mettaton, and dealing with the fact that the thing you abandoned your family for didn't even make you happy.
Bookmarked by Rockium
28 May 2026
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Summary
Mettaton and Alphys have fractured all remnants of a friendship between them.
Then... a human enters the Underground, and suddenly there is something bringing them together again.As the human tears through the world mercilessly, are they driven further away, or forced to lean on each other?
Series
- Part 2 of Heart Rot
Bookmarked by Rockium
22 May 2026
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Summary
According to the (signed) “16 Months of MTT Pin-Ups: MTT Goes Hollywood” Calendar on the Fridge, today is Maintenance Day.
Mettaton has a scheduled maintenance session at his best friend's apartment.
Bookmarked by Rockium
20 Apr 2026
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Everysteve, Everywhere, All at Once by Excelion
Fandoms: Stranger Things (TV 2016), Everything Everywhere All at Once (2022)
15 Nov 2025
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Summary
Steve Harrington has stopped pretending to be human. Somewhere between Hawkins and the infinite timelines bleeding into it, he’s seen every version of himself (hero, babysitter, monster) and realized they’re all the same: meaningless performances in a universe that doesn’t care.
Bookmarked by Rockium
28 Nov 2025
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but there's no hope for me (i've been set free) by acaciapines
Fandoms: Rain World (Video Game)
22 Dec 2024
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Summary
Five Pebbles is consumed by his own Rot, and dies. Or, that's what he assumed would happen, but instead he wakes again, bound to the cycle, trapped in a body that is not his own, and perhaps this is his solution: a mobile body, capable of bringing him down to the Void Sea, where he can finally, finally, find his peace.
But his so-called sister has never been able to just let him rest.
(Pebbles, Moon, and the Artificer: a story about surviving, old mistakes, and the families built in the strangest of places.)
Series
- Part 2 of I've Been Set Free
Bookmarked by Rockium
22 Oct 2025