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by Isaac Stewart
Aliases Doomslug the destroyer
World Detritus
Universe Skyward Universe
Featured In Skyward

Stupid junky piece of worthless imitation life. Scud! Scud! Scud! Scudding scud and stupid scud.

— Doomslug mimicking Rig complaining about M-bot[1]

Doomslug is a life form found on Detritus. She is known as Doomslug the Destroyer and is Spensa's mascot.[2] She frequently accompanies Spensa on flights and is known to replicate nearly any sound she hears.[3]

Appearance and Personality[edit]

Doomslug is a flat, long, and somewhat blobby slug, described as "The size of a loaf of bread, but thinner." She is predominately yellow, but possesses blue spikes that cover her backside. She does not appear to have eyes, a mouth, or any of the components of a face, but reminds Spensa of a chipmunk.[3] When pleased, Doomslug emits a flutelike trill from her spikes, and will replicate nearly perfectly any sound she hears. More of her kind exist,[4] with some variation in color.[5]


Early Life[edit]

Almost nothing is known about Doomslug's life prior to meeting Spensa.

Meeting Spensa[edit]

Doomslug had taken up residence inside of M-Bot prior to M-Bot's discovery. After Spensa arrived, the slug observed her, but engaged in minimal interaction. As their relationship progressed, Doomslug became more open, often enthusiastically repeating words and eventually complex phrases spoken by Spensa and Rig, as well as trilling in enjoyment when rubbed on the head.[6][7]

When Spensa began her first flight with M-Bot, Doomslug took residence in the seat behind Spensa. [8]

Attributes and Abilities[edit]


Doomslug can replicate any sound she hears with impeccable precision, though there is always a "distinctly fluty" sound to it.[3]


Doomslug is covered in blue spikes, which would make handling her difficult, and provides protection from predators. Her bright colors also lead Spensa to believe the possibility that she might be poisonous.[6] She is also capable of resisting minor increases in gravitational forces.


When unobserved DoomSlug has the ability to quickly move from one location to another.[3]


Work? Work! Gone!

— Doomslug to Spensa[3]

She won't

— Doomslug affirming Spensa's belief about Judy "Ironsides" Ivans[8]


  • Doomslug is the Skyward-inspired cosplay Brandon is most excited to see in the future. [9]
  • Her diet consists of "mushrooms, among other things" and is rather plot-relevant.[10]
  • Doomslug may have a bow at some point.[11]
  • Doomslug and creatures like her will be explored in more depth in Starsight[12][4]
  • M-Bot does not find Doomslug to be an engaging conversationalist.[11]


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