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1. The Royal Twins of Hell by shadowwriter329

   Fandoms: Gravity Falls, Hazbin Hotel (Cartoon), Helluva Boss (Web Series)  

   • Mature
   • Creator Chose Not To Use Archive Warnings
   • F/F, F/M, Multi
   • Work in Progress

   31 Oct 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Wendy Corduroy/Dipper Pines
   • Pacifica Northwest/Dipper Pines
   • Wendy Corduroy/Dipper Pines/Tambry
   • Charlie Magne | Morningstar/Vaggie
   • Dipper Pines
   • Mabel Pines
   • Stan Pines
   • Lucifer Magne | Morningstar
   • Charlie Magne | Morningstar
   • Wendy Corduroy
   • Pacifica Northwest
   • Tambry (Gravity Falls)
   • Vaggie (Hazbin Hotel)
   • Angel Dust (Hazbin Hotel)
   • Alastor (Hazbin Hotel)
   • Waddles (Gravity Falls)
   • Teenage Dipper Pines and Mabel Pines
   • Teenage Pacifica Northwest
   • Badass Wendy Corduroy
   • Demon Summoning
   • Demon/Human Relationships
   • Demon Sex
   • Protective Charlie Magne | Morningstar
   • Bisexual Character
   • Alternate Universe - Canon Divergence
   • Other Ships Not Mentioned in Tags
   • Other Additional Tags to Be Added
   • Waddles is a beast
   • Dipper has fangirls
   • Velvette is Thirsty
   • Dipper gets very Lucky
   • Velvette is a fangirl

   Summary

   When Stan Pines had his niece and nephew over the summer, he didn't expect a few things. He knew their dad's side of the family had some strange characters but he didn't expect them to be able to go to Hell and back; literally. With strange powers and resources at their backs, what will this bring to Gravity Falls and its secrets?

   Language:

   English

   Words:

   92,159

   Chapters:

   6/?

   Comments:

   173

   Kudos:

   125

   Bookmarks:

   66

   Hits:

   7,934