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• Undertale Frutiger Aero AU | Cyber Eden by ArtistiaCons

  Fandoms: Undertale (Video Game), Undertale AU - Fandom, Frutiger Aerotale  

  • Teen And Up Audiences
  • Graphic Depictions Of Violence
  • Gen
  • Work in Progress

  24 Jan 2026

  Tags

  • Graphic Depictions Of Violence
  • Frutiger Aero | Sans (Undertale)
  • Frutiger Aero | Papyrus (Undertale)
  • Frutiger Aero | Frisk (Undertale)
  • Frutiger Aero | Chara (Undertale)
  • Frutiger Aero | W. D. Gaster (Undertale)
  • Work in Progress
  • My First Work in This Fandom
  • My First AO3 Post
  • 2170s
  • Future
  • Sci-Fi
  • Science Fiction
  • Alternate Universe - Science Fiction
  • POV Third Person
  • POV Third Person Omniscient
  • Futuristic Undertale
  • Scientist W. D. Gaster
  • W. D. Gaster Being An Asshole
  • Angst
  • Younger Brother Papyrus (Undertale)
  • Papyrus (Undertale) Knows More Than He Lets On
  • Fruitiger Aero
  • Intelligent Sans (Undertale)
  • Hacker Sans (Undertale)
  • Post-Undertale Pacifist Route
  • sans (undertale) - Freeform
  • Papyrus (Undertale) - Freeform
  • Frisk (Undertale) - Freeform
  • Chara (Undertale) - Freeform
  • Underground (Undertale)
  • Nonbinary Chara & Frisk (Undertale)
  • Selectively Mute Frisk (Undertale)
  • Teenage Frisk (Undertale)
  • Sans is Good With Kids (Undertale)
  • Sans is a Mess (Undertale)
  • Papyrus is Not Innocent (Undertale)
  • Frisk (Undertale) Is a Sweetheart
  • Ghost Chara (Undertale)
  • Chara & Frisk (Undertale) Share a Body
  • W. D. Gaster-centric
  • Author Is Sleep Deprived
  • So please be nice thank you

  Summary

  It has been several years since the monsters of the Underground have finally found a way to the surface. After experiencing much hardships and their force of survival for so long, they come to find the surface has changed so much than they last saw it.

  What used to be the Fallen Kingdom is now a high-traffic city rebuilt on technological advancements.

  [WORK IN PROGRESS]

  Undertale © Toby Fox

  Language:

  English

  Words:

  1,240

  Chapters:

  1/?

  Kudos:

  2

  Hits:

  51