City-tier Power Level, Alien Theme
The Negamarmot
A giant alien animal on the loose
The Negamarmot is the pet of some multiversal conqueror defeated in the past by the world’s superheroes. Unfortunately it got away during the initial incident, and has shown up unexpectedly since then.
The creature doesn’t seem particularly aggressive. But it’s still a headache for superheroes, for two reasons. First, the Negamarmot can and will eat anything. Anything. And it will vomit up anything, from anywhere. Scientists theorize that it has a two-way wormhole in its gullet, but aren’t sure where it connects to. Indeed, some researchers take the existence of the Negamarmot as a personal affront against them from a malicious cosmos. Second, it’s capable of radically changing its own size, from a tiny animal to a building-sized monster. This size change definitely impacts the size of what it produces and consumes.
Its only apparent motives are to examine interesting things, and to eat or vomit up random things at intervals. There’s no telling where things go, and worse, no rhyme or reason as to where it pulls things from. Apparently it derives sustenance from things moving through the wormhole interface.
The Negamarmot is at least partially composed of exotic matter of some kind. This seems to be the cause of its ability to change size. It is also remarkably resilient, and able to ignore most conventional weapons.
Playing the Negamarmot
The Negamarmot is only nominally a villain. Its only motivation is to exist in this weird, wonderful world. Its capacity for accidental chaos and destruction are what call the attention of heroes.
Although the Negamarmot’s creation predates the 2025 “Superman” film, you could view it as a version of the Kaiju in that movie.
Plots
- Drive the Negamarmot away, for now
- Deal with something the Negamarmot vomited up
- Prevent a powerful villain from taking control of the Negamarmot
Dialogue
“Rrrr?”
“Nggrwhwaaai!”
“Xxxx’shkt’qqekr”
“Zlreeeeeeeee…?”
Comic Book Panels
The Negamarmot has made its way to the heart of the museum. It blinks, curiously, then swallows the chief exhibit in a single quick gulp.
The Negamarmot, currently the size of a small office building, hurks up a half-destroyed alien starship. It’s still slimy from passage through the creature’s gut. And what’s that high-pitched whine that’s getting louder and louder?
The Negamarmot is entranced by the smell of chicken tendies, and is currently smashing its way through parking garages and overpasses to get to the source.


