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by Isaac Stewart
Abilities Cytonics, Mimicry
Aliases Doomslug the Destroyer
Species Taynix
World Detritus
Universe Skyward Universe
Featured In Skyward (series)
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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 taynix that Spensa Nightshade found on Detritus in the cave with M-Bot.[2][3] Spensa nicknamed her Doomslug the Destroyer and adopted her as a mascot.[4] 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,[5] with some variation in color.[6]


Early Life[edit]

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

Meeting Spensa[edit]

Doomslug took up residence near M-Bot after he was hidden by Commander Spears, who had flown his ship to Detritus in search of taynix slugs.[7] 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.[8][9]

When Spensa began her first flight with M-Bot, Doomslug took residence in the seat behind Spensa.[10]

Adventures to Starsight[edit]

While under cover at Starsight, Spensa finds out that Doomslug is a tanyix and has the capability to hyperjump ships.

Attributes and Abilities[edit]


As a taynix, Doomslug has the ability to travel at faster-than-light speeds by accessing the nowhere and can distract the delvers from the cytonic hyperjump so that they won't be drawn into the universe.[7] It is unclear whether or not Doomslug has or could learn any other Cytonic powers.


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.[8] She is also capable of resisting minor increases in gravitational forces.


Work? Work! Gone!

— Doomslug to Spensa[3]

She won't

— Doomslug affirming Spensa's belief about Judy "Ironsides" Ivans[10]

Let's go!

— Doomslug to Spensa[11]


— Doomslug mimicking Spensa[12]


  • Doomslug is the Skyward-inspired cosplay Brandon is most excited to see in the future. [13]
  • Her diet consists of "mushrooms, among other things" and is rather plot-relevant.[14]
  • Doomslug may have a bow at some point.[15]
  • M-Bot does not find Doomslug to be an engaging conversationalist.[15]


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